diff --git a/LICENSE b/LICENSE
index fb388417..6b0b1270 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,8 +1,203 @@
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-Dnote contributors
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diff --git a/licenses/AGPLv3.txt b/licenses/AGPLv3.txt
deleted file mode 100644
index 0ad25db4..00000000
--- a/licenses/AGPLv3.txt
+++ /dev/null
@@ -1,661 +0,0 @@
-                    GNU AFFERO GENERAL PUBLIC LICENSE
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-  13. Remote Network Interaction; Use with the GNU General Public License.
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-  Notwithstanding any other provision of this License, if you modify the
-Program, your modified version must prominently offer all users
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-  14. Revised Versions of this License.
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-  The Free Software Foundation may publish revised and/or new versions of
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-  16. Limitation of Liability.
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-  If the disclaimer of warranty and limitation of liability provided
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-an absolute waiver of all civil liability in connection with the
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-
-                     END OF TERMS AND CONDITIONS
-
-            How to Apply These Terms to Your New Programs
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-  If you develop a new program, and you want it to be of the greatest
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-free software which everyone can redistribute and change under these terms.
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-    Copyright (C) <year>  <name of author>
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-    This program is free software: you can redistribute it and/or modify
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-    by the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU Affero General Public License for more details.
-
-    You should have received a copy of the GNU Affero General Public License
-    along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-Also add information on how to contact you by electronic and paper mail.
-
-  If your software can interact with users remotely through a computer
-network, you should also make sure that it provides a way for users to
-get its source.  For example, if your program is a web application, its
-interface could display a "Source" link that leads users to an archive
-of the code.  There are many ways you could offer source, and different
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-  You should also get your employer (if you work as a programmer) or school,
-if any, to sign a "copyright disclaimer" for the program, if necessary.
-For more information on this, and how to apply and follow the GNU AGPL, see
-<https://www.gnu.org/licenses/>.
diff --git a/licenses/GPLv3.txt b/licenses/GPLv3.txt
deleted file mode 100644
index f288702d..00000000
--- a/licenses/GPLv3.txt
+++ /dev/null
@@ -1,674 +0,0 @@
-                    GNU GENERAL PUBLIC LICENSE
-                       Version 3, 29 June 2007
-
- Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
- Everyone is permitted to copy and distribute verbatim copies
- of this license document, but changing it is not allowed.
-
-                            Preamble
-
-  The GNU General Public License is a free, copyleft license for
-software and other kinds of works.
-
-  The licenses for most software and other practical works are designed
-to take away your freedom to share and change the works.  By contrast,
-the GNU General Public License is intended to guarantee your freedom to
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-  When we speak of free software, we are referring to freedom, not
-price.  Our General Public Licenses are designed to make sure that you
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-know their rights.
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-  Developers that use the GNU GPL protect your rights with two steps:
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-  7. Additional Terms.
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-(including a cross-claim or counterclaim in a lawsuit) alleging that
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-available, or (2) arrange to deprive yourself of the benefit of the
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-license to downstream recipients.  "Knowingly relying" means you have
-actual knowledge that, but for the patent license, your conveying the
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-country that you have reason to believe are valid.
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-or that patent license was granted, prior to 28 March 2007.
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-otherwise be available to you under applicable patent law.
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-  12. No Surrender of Others' Freedom.
-
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-excuse you from the conditions of this License.  If you cannot convey a
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-to collect a royalty for further conveying from those to whom you convey
-the Program, the only way you could satisfy both those terms and this
-License would be to refrain entirely from conveying the Program.
-
-  13. Use with the GNU Affero General Public License.
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-  Notwithstanding any other provision of this License, you have
-permission to link or combine any covered work with a work licensed
-under version 3 of the GNU Affero General Public License into a single
-combined work, and to convey the resulting work.  The terms of this
-License will continue to apply to the part which is the covered work,
-but the special requirements of the GNU Affero General Public License,
-section 13, concerning interaction through a network will apply to the
-combination as such.
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-  14. Revised Versions of this License.
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-be similar in spirit to the present version, but may differ in detail to
-address new problems or concerns.
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-  Each version is given a distinguishing version number.  If the
-Program specifies that a certain numbered version of the GNU General
-Public License "or any later version" applies to it, you have the
-option of following the terms and conditions either of that numbered
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-Foundation.  If the Program does not specify a version number of the
-GNU General Public License, you may choose any version ever published
-by the Free Software Foundation.
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-  If the Program specifies that a proxy can decide which future
-versions of the GNU General Public License can be used, that proxy's
-public statement of acceptance of a version permanently authorizes you
-to choose that version for the Program.
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-permissions.  However, no additional obligations are imposed on any
-author or copyright holder as a result of your choosing to follow a
-later version.
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-APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
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-                     END OF TERMS AND CONDITIONS
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-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
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-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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-    This is free software, and you are welcome to redistribute it
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-The hypothetical commands `show w' and `show c' should show the appropriate
-parts of the General Public License.  Of course, your program's commands
-might be different; for a GUI interface, you would use an "about box".
-
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-if any, to sign a "copyright disclaimer" for the program, if necessary.
-For more information on this, and how to apply and follow the GNU GPL, see
-<https://www.gnu.org/licenses/>.
-
-  The GNU General Public License does not permit incorporating your program
-into proprietary programs.  If your program is a subroutine library, you
-may consider it more useful to permit linking proprietary applications with
-the library.  If this is what you want to do, use the GNU Lesser General
-Public License instead of this License.  But first, please read
-<https://www.gnu.org/licenses/why-not-lgpl.html>.
diff --git a/pkg/assert/assert.go b/pkg/assert/assert.go
index 000d7b48..bb98fce0 100644
--- a/pkg/assert/assert.go
+++ b/pkg/assert/assert.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 // Package assert provides functions to assert a condition in tests
diff --git a/pkg/assert/prompt.go b/pkg/assert/prompt.go
index d4ec5d25..c21e6a42 100644
--- a/pkg/assert/prompt.go
+++ b/pkg/assert/prompt.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package assert
diff --git a/pkg/cli/client/client.go b/pkg/cli/client/client.go
index 083b9392..2be0006d 100644
--- a/pkg/cli/client/client.go
+++ b/pkg/cli/client/client.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 // Package client provides interfaces for interacting with the Dnote server
diff --git a/pkg/cli/client/client_test.go b/pkg/cli/client/client_test.go
index 3bb99e93..f83a0e6f 100644
--- a/pkg/cli/client/client_test.go
+++ b/pkg/cli/client/client_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package client
diff --git a/pkg/cli/cmd/add/add.go b/pkg/cli/cmd/add/add.go
index 2d6591a2..be89b829 100644
--- a/pkg/cli/cmd/add/add.go
+++ b/pkg/cli/cmd/add/add.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package add
diff --git a/pkg/cli/cmd/cat/cat.go b/pkg/cli/cmd/cat/cat.go
index 4961ce33..c32eb687 100644
--- a/pkg/cli/cmd/cat/cat.go
+++ b/pkg/cli/cmd/cat/cat.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package cat
diff --git a/pkg/cli/cmd/edit/book.go b/pkg/cli/cmd/edit/book.go
index 5b85f98b..ab326e7f 100644
--- a/pkg/cli/cmd/edit/book.go
+++ b/pkg/cli/cmd/edit/book.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package edit
diff --git a/pkg/cli/cmd/edit/edit.go b/pkg/cli/cmd/edit/edit.go
index 12a80dce..16a7c413 100644
--- a/pkg/cli/cmd/edit/edit.go
+++ b/pkg/cli/cmd/edit/edit.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package edit
diff --git a/pkg/cli/cmd/edit/note.go b/pkg/cli/cmd/edit/note.go
index f6019778..84a631f4 100644
--- a/pkg/cli/cmd/edit/note.go
+++ b/pkg/cli/cmd/edit/note.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package edit
diff --git a/pkg/cli/cmd/find/find.go b/pkg/cli/cmd/find/find.go
index e3007c9b..4723bcb4 100644
--- a/pkg/cli/cmd/find/find.go
+++ b/pkg/cli/cmd/find/find.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package find
diff --git a/pkg/cli/cmd/find/lexer.go b/pkg/cli/cmd/find/lexer.go
index b5bc8ce8..6115becc 100644
--- a/pkg/cli/cmd/find/lexer.go
+++ b/pkg/cli/cmd/find/lexer.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package find
diff --git a/pkg/cli/cmd/find/lexer_test.go b/pkg/cli/cmd/find/lexer_test.go
index 288d71fc..3a74ad5a 100644
--- a/pkg/cli/cmd/find/lexer_test.go
+++ b/pkg/cli/cmd/find/lexer_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package find
diff --git a/pkg/cli/cmd/login/login.go b/pkg/cli/cmd/login/login.go
index 4d8ee392..c9b1dfd5 100644
--- a/pkg/cli/cmd/login/login.go
+++ b/pkg/cli/cmd/login/login.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package login
diff --git a/pkg/cli/cmd/login/login_test.go b/pkg/cli/cmd/login/login_test.go
index c208fa5d..6d5917cc 100644
--- a/pkg/cli/cmd/login/login_test.go
+++ b/pkg/cli/cmd/login/login_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package login
diff --git a/pkg/cli/cmd/logout/logout.go b/pkg/cli/cmd/logout/logout.go
index 008c9652..98cd69eb 100644
--- a/pkg/cli/cmd/logout/logout.go
+++ b/pkg/cli/cmd/logout/logout.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package logout
diff --git a/pkg/cli/cmd/ls/ls.go b/pkg/cli/cmd/ls/ls.go
index dbf4deb4..f0ddd047 100644
--- a/pkg/cli/cmd/ls/ls.go
+++ b/pkg/cli/cmd/ls/ls.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package ls
diff --git a/pkg/cli/cmd/remove/remove.go b/pkg/cli/cmd/remove/remove.go
index 443e4867..89d44b78 100644
--- a/pkg/cli/cmd/remove/remove.go
+++ b/pkg/cli/cmd/remove/remove.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package remove
diff --git a/pkg/cli/cmd/root/root.go b/pkg/cli/cmd/root/root.go
index 604f7682..6da096bf 100644
--- a/pkg/cli/cmd/root/root.go
+++ b/pkg/cli/cmd/root/root.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package root
diff --git a/pkg/cli/cmd/sync/merge.go b/pkg/cli/cmd/sync/merge.go
index 2b70d095..0e4d15be 100644
--- a/pkg/cli/cmd/sync/merge.go
+++ b/pkg/cli/cmd/sync/merge.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package sync
diff --git a/pkg/cli/cmd/sync/merge_test.go b/pkg/cli/cmd/sync/merge_test.go
index 3134e13c..e6f4839e 100644
--- a/pkg/cli/cmd/sync/merge_test.go
+++ b/pkg/cli/cmd/sync/merge_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package sync
diff --git a/pkg/cli/cmd/sync/sync.go b/pkg/cli/cmd/sync/sync.go
index f8f2aec0..6cb506ae 100644
--- a/pkg/cli/cmd/sync/sync.go
+++ b/pkg/cli/cmd/sync/sync.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package sync
diff --git a/pkg/cli/cmd/sync/sync_test.go b/pkg/cli/cmd/sync/sync_test.go
index 6c22e926..ae3b94ff 100644
--- a/pkg/cli/cmd/sync/sync_test.go
+++ b/pkg/cli/cmd/sync/sync_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package sync
diff --git a/pkg/cli/cmd/version/version.go b/pkg/cli/cmd/version/version.go
index f508ee6e..79892204 100644
--- a/pkg/cli/cmd/version/version.go
+++ b/pkg/cli/cmd/version/version.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package version
diff --git a/pkg/cli/cmd/view/view.go b/pkg/cli/cmd/view/view.go
index dde41fa5..62f50a53 100644
--- a/pkg/cli/cmd/view/view.go
+++ b/pkg/cli/cmd/view/view.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package view
diff --git a/pkg/cli/config/config.go b/pkg/cli/config/config.go
index b0faa9cf..065100c0 100644
--- a/pkg/cli/config/config.go
+++ b/pkg/cli/config/config.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package config
diff --git a/pkg/cli/consts/consts.go b/pkg/cli/consts/consts.go
index dec8d456..0f49c152 100644
--- a/pkg/cli/consts/consts.go
+++ b/pkg/cli/consts/consts.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 // Package consts provides definitions of constants
diff --git a/pkg/cli/context/ctx.go b/pkg/cli/context/ctx.go
index 61cd5be8..971d9145 100644
--- a/pkg/cli/context/ctx.go
+++ b/pkg/cli/context/ctx.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 // Package context defines dnote context
diff --git a/pkg/cli/context/files.go b/pkg/cli/context/files.go
index 098b2cd5..1abbcd47 100644
--- a/pkg/cli/context/files.go
+++ b/pkg/cli/context/files.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package context
diff --git a/pkg/cli/context/files_test.go b/pkg/cli/context/files_test.go
index 2422a795..49d62dc9 100644
--- a/pkg/cli/context/files_test.go
+++ b/pkg/cli/context/files_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package context
diff --git a/pkg/cli/context/testutils.go b/pkg/cli/context/testutils.go
index 62fed833..cb477475 100644
--- a/pkg/cli/context/testutils.go
+++ b/pkg/cli/context/testutils.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package context
diff --git a/pkg/cli/database/models.go b/pkg/cli/database/models.go
index b26a6b5a..e8e463bb 100644
--- a/pkg/cli/database/models.go
+++ b/pkg/cli/database/models.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package database
diff --git a/pkg/cli/database/models_test.go b/pkg/cli/database/models_test.go
index 53565d7b..6d0a45f0 100644
--- a/pkg/cli/database/models_test.go
+++ b/pkg/cli/database/models_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package database
diff --git a/pkg/cli/database/queries.go b/pkg/cli/database/queries.go
index e8ec5ce5..2209c8f3 100644
--- a/pkg/cli/database/queries.go
+++ b/pkg/cli/database/queries.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package database
diff --git a/pkg/cli/database/queries_test.go b/pkg/cli/database/queries_test.go
index cccc697f..e394fe95 100644
--- a/pkg/cli/database/queries_test.go
+++ b/pkg/cli/database/queries_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package database
diff --git a/pkg/cli/database/schema/main.go b/pkg/cli/database/schema/main.go
index 2596c84a..6c75e4d0 100644
--- a/pkg/cli/database/schema/main.go
+++ b/pkg/cli/database/schema/main.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 // Command schema generates the CLI database schema.sql file.
diff --git a/pkg/cli/database/schema/main_test.go b/pkg/cli/database/schema/main_test.go
index 24bd9fc0..26898ef3 100644
--- a/pkg/cli/database/schema/main_test.go
+++ b/pkg/cli/database/schema/main_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package main
diff --git a/pkg/cli/database/sql.go b/pkg/cli/database/sql.go
index 19271606..0af3c7fd 100644
--- a/pkg/cli/database/sql.go
+++ b/pkg/cli/database/sql.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package database
diff --git a/pkg/cli/database/testutils.go b/pkg/cli/database/testutils.go
index 59824034..23633d53 100644
--- a/pkg/cli/database/testutils.go
+++ b/pkg/cli/database/testutils.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package database
diff --git a/pkg/cli/infra/init.go b/pkg/cli/infra/init.go
index b87cfdd4..a6cbd1aa 100644
--- a/pkg/cli/infra/init.go
+++ b/pkg/cli/infra/init.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 // Package infra provides operations and definitions for the
diff --git a/pkg/cli/infra/init_test.go b/pkg/cli/infra/init_test.go
index 6ac0d5cf..8c698624 100644
--- a/pkg/cli/infra/init_test.go
+++ b/pkg/cli/infra/init_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package infra
diff --git a/pkg/cli/log/log.go b/pkg/cli/log/log.go
index dc78e2b4..0bc569b6 100644
--- a/pkg/cli/log/log.go
+++ b/pkg/cli/log/log.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package log
diff --git a/pkg/cli/main.go b/pkg/cli/main.go
index dfdac5a7..2afbaf36 100644
--- a/pkg/cli/main.go
+++ b/pkg/cli/main.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package main
diff --git a/pkg/cli/main_test.go b/pkg/cli/main_test.go
index 0d9ad71a..5da1915e 100644
--- a/pkg/cli/main_test.go
+++ b/pkg/cli/main_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package main
diff --git a/pkg/cli/migrate/legacy.go b/pkg/cli/migrate/legacy.go
index dc5441c7..4399f7fb 100644
--- a/pkg/cli/migrate/legacy.go
+++ b/pkg/cli/migrate/legacy.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 // Package migrate provides migration logic for both sqlite and
diff --git a/pkg/cli/migrate/legacy_test.go b/pkg/cli/migrate/legacy_test.go
index 4d1a1dc6..73d8b063 100644
--- a/pkg/cli/migrate/legacy_test.go
+++ b/pkg/cli/migrate/legacy_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package migrate
diff --git a/pkg/cli/migrate/migrate.go b/pkg/cli/migrate/migrate.go
index d579ffb7..9b4b0f50 100644
--- a/pkg/cli/migrate/migrate.go
+++ b/pkg/cli/migrate/migrate.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package migrate
diff --git a/pkg/cli/migrate/migrate_test.go b/pkg/cli/migrate/migrate_test.go
index 591f1800..7b31a91e 100644
--- a/pkg/cli/migrate/migrate_test.go
+++ b/pkg/cli/migrate/migrate_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package migrate
diff --git a/pkg/cli/migrate/migrations.go b/pkg/cli/migrate/migrations.go
index 09b86afc..197a2b03 100644
--- a/pkg/cli/migrate/migrations.go
+++ b/pkg/cli/migrate/migrations.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package migrate
diff --git a/pkg/cli/output/output.go b/pkg/cli/output/output.go
index ef35b4fb..fe6e3c87 100644
--- a/pkg/cli/output/output.go
+++ b/pkg/cli/output/output.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 // Package output provides functions to print informations on the terminal
diff --git a/pkg/cli/testutils/main.go b/pkg/cli/testutils/main.go
index cefa6323..581cbd7f 100644
--- a/pkg/cli/testutils/main.go
+++ b/pkg/cli/testutils/main.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 // Package testutils provides utilities used in tests
diff --git a/pkg/cli/testutils/setup.go b/pkg/cli/testutils/setup.go
index 12c8b8ae..d88afd2d 100644
--- a/pkg/cli/testutils/setup.go
+++ b/pkg/cli/testutils/setup.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package testutils
diff --git a/pkg/cli/ui/editor.go b/pkg/cli/ui/editor.go
index 3501e7ae..a6c165f4 100644
--- a/pkg/cli/ui/editor.go
+++ b/pkg/cli/ui/editor.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 // Package ui provides the user interface for the program
diff --git a/pkg/cli/ui/editor_test.go b/pkg/cli/ui/editor_test.go
index 718c5337..54538c49 100644
--- a/pkg/cli/ui/editor_test.go
+++ b/pkg/cli/ui/editor_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package ui
diff --git a/pkg/cli/ui/terminal.go b/pkg/cli/ui/terminal.go
index 899060c7..6a255766 100644
--- a/pkg/cli/ui/terminal.go
+++ b/pkg/cli/ui/terminal.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package ui
diff --git a/pkg/cli/upgrade/upgrade.go b/pkg/cli/upgrade/upgrade.go
index aabfb916..7c24a86d 100644
--- a/pkg/cli/upgrade/upgrade.go
+++ b/pkg/cli/upgrade/upgrade.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package upgrade
diff --git a/pkg/cli/upgrade/upgrade_test.go b/pkg/cli/upgrade/upgrade_test.go
index 6b8e089c..917e6754 100644
--- a/pkg/cli/upgrade/upgrade_test.go
+++ b/pkg/cli/upgrade/upgrade_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package upgrade
diff --git a/pkg/cli/utils/diff/diff.go b/pkg/cli/utils/diff/diff.go
index 68dd5eb1..ff7e3384 100644
--- a/pkg/cli/utils/diff/diff.go
+++ b/pkg/cli/utils/diff/diff.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 // Package diff provides line-by-line diff feature by wrapping
diff --git a/pkg/cli/utils/diff/diff_test.go b/pkg/cli/utils/diff/diff_test.go
index 84794d0c..f777f26c 100644
--- a/pkg/cli/utils/diff/diff_test.go
+++ b/pkg/cli/utils/diff/diff_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package diff
diff --git a/pkg/cli/utils/files.go b/pkg/cli/utils/files.go
index 00e898ec..60f57de6 100644
--- a/pkg/cli/utils/files.go
+++ b/pkg/cli/utils/files.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package utils
diff --git a/pkg/cli/utils/files_test.go b/pkg/cli/utils/files_test.go
index 3c7c92bd..7f26e19c 100644
--- a/pkg/cli/utils/files_test.go
+++ b/pkg/cli/utils/files_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package utils
diff --git a/pkg/cli/utils/utils.go b/pkg/cli/utils/utils.go
index 5eed196f..417963ce 100644
--- a/pkg/cli/utils/utils.go
+++ b/pkg/cli/utils/utils.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package utils
diff --git a/pkg/cli/validate/book_test.go b/pkg/cli/validate/book_test.go
index 29c410a4..97a384fc 100644
--- a/pkg/cli/validate/book_test.go
+++ b/pkg/cli/validate/book_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package validate
diff --git a/pkg/cli/validate/books.go b/pkg/cli/validate/books.go
index 55b03675..b0e4c0ed 100644
--- a/pkg/cli/validate/books.go
+++ b/pkg/cli/validate/books.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package validate
diff --git a/pkg/clock/clock.go b/pkg/clock/clock.go
index dda84b74..061bb1a3 100644
--- a/pkg/clock/clock.go
+++ b/pkg/clock/clock.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 // Package clock provides an abstract layer over the standard time package
diff --git a/pkg/dirs/dirs.go b/pkg/dirs/dirs.go
index 439cfde8..3eb57a7f 100644
--- a/pkg/dirs/dirs.go
+++ b/pkg/dirs/dirs.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 // Package dirs provides base directory definitions for the system
diff --git a/pkg/dirs/dirs_test.go b/pkg/dirs/dirs_test.go
index 6fe3d1e0..0c1ecb1f 100644
--- a/pkg/dirs/dirs_test.go
+++ b/pkg/dirs/dirs_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package dirs
diff --git a/pkg/dirs/dirs_unix.go b/pkg/dirs/dirs_unix.go
index 59420c0e..6c7696c6 100644
--- a/pkg/dirs/dirs_unix.go
+++ b/pkg/dirs/dirs_unix.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 //go:build linux || darwin || freebsd
diff --git a/pkg/dirs/dirs_unix_test.go b/pkg/dirs/dirs_unix_test.go
index 0ab63ad8..9ea5805a 100644
--- a/pkg/dirs/dirs_unix_test.go
+++ b/pkg/dirs/dirs_unix_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 //go:build linux || darwin || freebsd
diff --git a/pkg/dirs/dirs_windows.go b/pkg/dirs/dirs_windows.go
index fb7bccf6..7159ae8d 100644
--- a/pkg/dirs/dirs_windows.go
+++ b/pkg/dirs/dirs_windows.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 //go:build windows
diff --git a/pkg/dirs/dirs_windows_test.go b/pkg/dirs/dirs_windows_test.go
index 85be4a3f..101071f5 100644
--- a/pkg/dirs/dirs_windows_test.go
+++ b/pkg/dirs/dirs_windows_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 //go:build windows
diff --git a/pkg/e2e/server_test.go b/pkg/e2e/server_test.go
index 39da46de..f94347ac 100644
--- a/pkg/e2e/server_test.go
+++ b/pkg/e2e/server_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package main
diff --git a/pkg/e2e/sync/basic_test.go b/pkg/e2e/sync/basic_test.go
index 4986229a..d49b0cd9 100644
--- a/pkg/e2e/sync/basic_test.go
+++ b/pkg/e2e/sync/basic_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package sync
diff --git a/pkg/e2e/sync/edge_cases_test.go b/pkg/e2e/sync/edge_cases_test.go
index ef1e0923..f833cadc 100644
--- a/pkg/e2e/sync/edge_cases_test.go
+++ b/pkg/e2e/sync/edge_cases_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package sync
diff --git a/pkg/e2e/sync/empty_server_test.go b/pkg/e2e/sync/empty_server_test.go
index ad7308e9..31756ed2 100644
--- a/pkg/e2e/sync/empty_server_test.go
+++ b/pkg/e2e/sync/empty_server_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package sync
diff --git a/pkg/e2e/sync/main_test.go b/pkg/e2e/sync/main_test.go
index b5d517f5..188e3a99 100644
--- a/pkg/e2e/sync/main_test.go
+++ b/pkg/e2e/sync/main_test.go
@@ -1,21 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * This file is part of Dnote.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package sync
diff --git a/pkg/e2e/sync/testutils.go b/pkg/e2e/sync/testutils.go
index def7bc47..0a09d963 100644
--- a/pkg/e2e/sync/testutils.go
+++ b/pkg/e2e/sync/testutils.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package sync
diff --git a/pkg/prompt/prompt.go b/pkg/prompt/prompt.go
index 1d413a27..262685e9 100644
--- a/pkg/prompt/prompt.go
+++ b/pkg/prompt/prompt.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 // Package prompt provides utilities for interactive yes/no prompts
diff --git a/pkg/prompt/prompt_test.go b/pkg/prompt/prompt_test.go
index f0df9480..6d5eb597 100644
--- a/pkg/prompt/prompt_test.go
+++ b/pkg/prompt/prompt_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package prompt
diff --git a/pkg/server/app/app.go b/pkg/server/app/app.go
index 96717eea..80754fbe 100644
--- a/pkg/server/app/app.go
+++ b/pkg/server/app/app.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package app
diff --git a/pkg/server/app/books.go b/pkg/server/app/books.go
index ae7b355f..f222b816 100644
--- a/pkg/server/app/books.go
+++ b/pkg/server/app/books.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package app
diff --git a/pkg/server/app/books_test.go b/pkg/server/app/books_test.go
index 66a27077..8953c613 100644
--- a/pkg/server/app/books_test.go
+++ b/pkg/server/app/books_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package app
diff --git a/pkg/server/app/doc.go b/pkg/server/app/doc.go
index 502939ff..2a3f3695 100644
--- a/pkg/server/app/doc.go
+++ b/pkg/server/app/doc.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 /*
diff --git a/pkg/server/app/email.go b/pkg/server/app/email.go
index 2f721a6f..14d3ec38 100644
--- a/pkg/server/app/email.go
+++ b/pkg/server/app/email.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package app
diff --git a/pkg/server/app/email_test.go b/pkg/server/app/email_test.go
index 56270604..31d284e7 100644
--- a/pkg/server/app/email_test.go
+++ b/pkg/server/app/email_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package app
diff --git a/pkg/server/app/errors.go b/pkg/server/app/errors.go
index 48f193b9..9d41ca38 100644
--- a/pkg/server/app/errors.go
+++ b/pkg/server/app/errors.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package app
diff --git a/pkg/server/app/helpers.go b/pkg/server/app/helpers.go
index 361db6cb..437ca9ae 100644
--- a/pkg/server/app/helpers.go
+++ b/pkg/server/app/helpers.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package app
diff --git a/pkg/server/app/helpers_test.go b/pkg/server/app/helpers_test.go
index ad309514..93486ecd 100644
--- a/pkg/server/app/helpers_test.go
+++ b/pkg/server/app/helpers_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package app
diff --git a/pkg/server/app/notes.go b/pkg/server/app/notes.go
index 7f25123a..4bdeaaf6 100644
--- a/pkg/server/app/notes.go
+++ b/pkg/server/app/notes.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package app
diff --git a/pkg/server/app/notes_test.go b/pkg/server/app/notes_test.go
index 6ee55b8f..a165312d 100644
--- a/pkg/server/app/notes_test.go
+++ b/pkg/server/app/notes_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package app
diff --git a/pkg/server/app/sessions.go b/pkg/server/app/sessions.go
index a240e036..e3a574b7 100644
--- a/pkg/server/app/sessions.go
+++ b/pkg/server/app/sessions.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package app
diff --git a/pkg/server/app/testutils.go b/pkg/server/app/testutils.go
index 45dbd5bb..8ea6980d 100644
--- a/pkg/server/app/testutils.go
+++ b/pkg/server/app/testutils.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package app
diff --git a/pkg/server/app/users.go b/pkg/server/app/users.go
index eb53c5a4..760b3354 100644
--- a/pkg/server/app/users.go
+++ b/pkg/server/app/users.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package app
diff --git a/pkg/server/app/users_test.go b/pkg/server/app/users_test.go
index 90184fec..f345b217 100644
--- a/pkg/server/app/users_test.go
+++ b/pkg/server/app/users_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package app
diff --git a/pkg/server/assets/embed.go b/pkg/server/assets/embed.go
index abe8c04f..e0272d95 100644
--- a/pkg/server/assets/embed.go
+++ b/pkg/server/assets/embed.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package assets
diff --git a/pkg/server/assets/js/src/main.js b/pkg/server/assets/js/src/main.js
index e63a8fb3..9e58d92a 100644
--- a/pkg/server/assets/js/src/main.js
+++ b/pkg/server/assets/js/src/main.js
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 var getNextSibling = function (el, selector) {
diff --git a/pkg/server/assets/package-lock.json b/pkg/server/assets/package-lock.json
index ec63082c..610d8eb4 100644
--- a/pkg/server/assets/package-lock.json
+++ b/pkg/server/assets/package-lock.json
@@ -7,7 +7,7 @@
     "": {
       "name": "assets",
       "version": "1.0.0",
-      "license": "AGPL-3.0-or-later",
+      "license": "Apache-2.0",
       "devDependencies": {
         "sass": "^1.50.1"
       }
diff --git a/pkg/server/assets/package.json b/pkg/server/assets/package.json
index 0edcd180..1561f6da 100644
--- a/pkg/server/assets/package.json
+++ b/pkg/server/assets/package.json
@@ -5,7 +5,7 @@
   "main": "index.js",
   "scripts": {},
   "author": "Dnote",
-  "license": "AGPL-3.0-or-later",
+  "license": "Apache-2.0",
   "devDependencies": {
     "sass": "^1.50.1"
   }
diff --git a/pkg/server/assets/styles/src/_books.scss b/pkg/server/assets/styles/src/_books.scss
index c94c4347..10f9a8aa 100644
--- a/pkg/server/assets/styles/src/_books.scss
+++ b/pkg/server/assets/styles/src/_books.scss
@@ -1,23 +1,20 @@
+/* Copyright 2025 Dnote Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 @use "rem";
 @use "theme";
 
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
- *
- * This file is part of Dnote.
- *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
- */
 
 .books-page {
   .books-content {
diff --git a/pkg/server/assets/styles/src/_bootstrap.scss b/pkg/server/assets/styles/src/_bootstrap.scss
index e306a4b0..9ccc9a78 100644
--- a/pkg/server/assets/styles/src/_bootstrap.scss
+++ b/pkg/server/assets/styles/src/_bootstrap.scss
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 // From Bootstrap <4.3.1
diff --git a/pkg/server/assets/styles/src/_buttons.scss b/pkg/server/assets/styles/src/_buttons.scss
index 16059864..e734b003 100644
--- a/pkg/server/assets/styles/src/_buttons.scss
+++ b/pkg/server/assets/styles/src/_buttons.scss
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 @use "sass:color";
diff --git a/pkg/server/assets/styles/src/_font.scss b/pkg/server/assets/styles/src/_font.scss
index 37bc3163..4818014a 100644
--- a/pkg/server/assets/styles/src/_font.scss
+++ b/pkg/server/assets/styles/src/_font.scss
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 @use 'responsive';
diff --git a/pkg/server/assets/styles/src/_global.scss b/pkg/server/assets/styles/src/_global.scss
index 8c497658..7bad7d58 100644
--- a/pkg/server/assets/styles/src/_global.scss
+++ b/pkg/server/assets/styles/src/_global.scss
@@ -1,26 +1,23 @@
+/* Copyright 2025 Dnote Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 @use "font";
 @use "rem";
 @use "responsive";
 @use "theme";
 @use "variables";
 
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
- *
- * This file is part of Dnote.
- *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
- */
 
 .main {
   position: relative;
diff --git a/pkg/server/assets/styles/src/_grid.scss b/pkg/server/assets/styles/src/_grid.scss
index 362946be..9e527582 100644
--- a/pkg/server/assets/styles/src/_grid.scss
+++ b/pkg/server/assets/styles/src/_grid.scss
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 /*!
diff --git a/pkg/server/assets/styles/src/_header.scss b/pkg/server/assets/styles/src/_header.scss
index c952599e..28374fb7 100644
--- a/pkg/server/assets/styles/src/_header.scss
+++ b/pkg/server/assets/styles/src/_header.scss
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 @use "sass:color";
diff --git a/pkg/server/assets/styles/src/_hljs.scss b/pkg/server/assets/styles/src/_hljs.scss
index 3f05190d..4decc572 100644
--- a/pkg/server/assets/styles/src/_hljs.scss
+++ b/pkg/server/assets/styles/src/_hljs.scss
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 /*
diff --git a/pkg/server/assets/styles/src/_home.scss b/pkg/server/assets/styles/src/_home.scss
index ce72a9f3..6ec13eaa 100644
--- a/pkg/server/assets/styles/src/_home.scss
+++ b/pkg/server/assets/styles/src/_home.scss
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 @use 'theme';
diff --git a/pkg/server/assets/styles/src/_login.scss b/pkg/server/assets/styles/src/_login.scss
index 9200a911..1b8bfa97 100644
--- a/pkg/server/assets/styles/src/_login.scss
+++ b/pkg/server/assets/styles/src/_login.scss
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 @use 'theme';
diff --git a/pkg/server/assets/styles/src/_markdown.scss b/pkg/server/assets/styles/src/_markdown.scss
index 949ee46a..e1621ffa 100644
--- a/pkg/server/assets/styles/src/_markdown.scss
+++ b/pkg/server/assets/styles/src/_markdown.scss
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 /*
diff --git a/pkg/server/assets/styles/src/_marker.scss b/pkg/server/assets/styles/src/_marker.scss
index 6de64210..db583dd2 100644
--- a/pkg/server/assets/styles/src/_marker.scss
+++ b/pkg/server/assets/styles/src/_marker.scss
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 .marker {
diff --git a/pkg/server/assets/styles/src/_note.scss b/pkg/server/assets/styles/src/_note.scss
index edc83a34..87f6e790 100644
--- a/pkg/server/assets/styles/src/_note.scss
+++ b/pkg/server/assets/styles/src/_note.scss
@@ -1,25 +1,22 @@
+/* Copyright 2025 Dnote Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 @use "font";
 @use "rem";
 @use "responsive";
 @use "theme";
 
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
- *
- * This file is part of Dnote.
- *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
- */
 
 .note-page {
   // min-height: calc(100vh - 57px);
diff --git a/pkg/server/assets/styles/src/_reboot.scss b/pkg/server/assets/styles/src/_reboot.scss
index 04587120..369cf5de 100644
--- a/pkg/server/assets/styles/src/_reboot.scss
+++ b/pkg/server/assets/styles/src/_reboot.scss
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 /*!
diff --git a/pkg/server/assets/styles/src/_rem.scss b/pkg/server/assets/styles/src/_rem.scss
index cd736925..c2b914ff 100644
--- a/pkg/server/assets/styles/src/_rem.scss
+++ b/pkg/server/assets/styles/src/_rem.scss
@@ -1,23 +1,20 @@
+/* Copyright 2025 Dnote Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 @use "sass:list";
 @use "sass:map";
 @use "sass:meta";
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
- *
- * This file is part of Dnote.
- *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
- */
 
 /*
 MIT License
diff --git a/pkg/server/assets/styles/src/_responsive.scss b/pkg/server/assets/styles/src/_responsive.scss
index 9aaf9a7f..2ebbf0ab 100644
--- a/pkg/server/assets/styles/src/_responsive.scss
+++ b/pkg/server/assets/styles/src/_responsive.scss
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 @use 'variables';
diff --git a/pkg/server/assets/styles/src/_select.scss b/pkg/server/assets/styles/src/_select.scss
index 9a0abb60..a0dc5d8c 100644
--- a/pkg/server/assets/styles/src/_select.scss
+++ b/pkg/server/assets/styles/src/_select.scss
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 /**
diff --git a/pkg/server/assets/styles/src/_settings.scss b/pkg/server/assets/styles/src/_settings.scss
index 2f5d439d..a965ecbb 100644
--- a/pkg/server/assets/styles/src/_settings.scss
+++ b/pkg/server/assets/styles/src/_settings.scss
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 @use 'theme';
diff --git a/pkg/server/assets/styles/src/_shared.scss b/pkg/server/assets/styles/src/_shared.scss
index 1b7697c1..3dcbcbe4 100644
--- a/pkg/server/assets/styles/src/_shared.scss
+++ b/pkg/server/assets/styles/src/_shared.scss
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 @use 'font';
diff --git a/pkg/server/assets/styles/src/_theme.scss b/pkg/server/assets/styles/src/_theme.scss
index f37d81a5..5654cb7a 100644
--- a/pkg/server/assets/styles/src/_theme.scss
+++ b/pkg/server/assets/styles/src/_theme.scss
@@ -1,21 +1,18 @@
-@use "sass:color";
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
+@use "sass:color";
 
 // basic colors
 $black: #2a2a2a;
diff --git a/pkg/server/assets/styles/src/_variables.scss b/pkg/server/assets/styles/src/_variables.scss
index c54cd062..490d9dbb 100644
--- a/pkg/server/assets/styles/src/_variables.scss
+++ b/pkg/server/assets/styles/src/_variables.scss
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 $header-height: 60px;
diff --git a/pkg/server/assets/styles/src/main.scss b/pkg/server/assets/styles/src/main.scss
index 4a5a7379..9afa9f6d 100644
--- a/pkg/server/assets/styles/src/main.scss
+++ b/pkg/server/assets/styles/src/main.scss
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 @use 'reboot';
diff --git a/pkg/server/buildinfo/info.go b/pkg/server/buildinfo/info.go
index 09bcdb9d..4e6661f8 100644
--- a/pkg/server/buildinfo/info.go
+++ b/pkg/server/buildinfo/info.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package buildinfo
diff --git a/pkg/server/cmd/helpers.go b/pkg/server/cmd/helpers.go
index eb58c318..3b981dc5 100644
--- a/pkg/server/cmd/helpers.go
+++ b/pkg/server/cmd/helpers.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package cmd
diff --git a/pkg/server/cmd/root.go b/pkg/server/cmd/root.go
index 1ed2129f..106ab2d9 100644
--- a/pkg/server/cmd/root.go
+++ b/pkg/server/cmd/root.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package cmd
diff --git a/pkg/server/cmd/start.go b/pkg/server/cmd/start.go
index dee5913c..c65ac398 100644
--- a/pkg/server/cmd/start.go
+++ b/pkg/server/cmd/start.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package cmd
diff --git a/pkg/server/cmd/user.go b/pkg/server/cmd/user.go
index ec5b4ea2..01b753b1 100644
--- a/pkg/server/cmd/user.go
+++ b/pkg/server/cmd/user.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package cmd
diff --git a/pkg/server/cmd/user_test.go b/pkg/server/cmd/user_test.go
index ea81832a..834ae3bd 100644
--- a/pkg/server/cmd/user_test.go
+++ b/pkg/server/cmd/user_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package cmd
diff --git a/pkg/server/cmd/version.go b/pkg/server/cmd/version.go
index 99c68429..c36405d4 100644
--- a/pkg/server/cmd/version.go
+++ b/pkg/server/cmd/version.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package cmd
diff --git a/pkg/server/config/config.go b/pkg/server/config/config.go
index e941a9a5..0fbb3617 100644
--- a/pkg/server/config/config.go
+++ b/pkg/server/config/config.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package config
diff --git a/pkg/server/config/config_test.go b/pkg/server/config/config_test.go
index 802a3add..8b76c07b 100644
--- a/pkg/server/config/config_test.go
+++ b/pkg/server/config/config_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package config
diff --git a/pkg/server/consts/consts.go b/pkg/server/consts/consts.go
index 948d7631..1f464951 100644
--- a/pkg/server/consts/consts.go
+++ b/pkg/server/consts/consts.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package consts
diff --git a/pkg/server/context/user.go b/pkg/server/context/user.go
index 64171df7..b58d40e9 100644
--- a/pkg/server/context/user.go
+++ b/pkg/server/context/user.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package context
diff --git a/pkg/server/controllers/books.go b/pkg/server/controllers/books.go
index c721b594..c20ea679 100644
--- a/pkg/server/controllers/books.go
+++ b/pkg/server/controllers/books.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package controllers
diff --git a/pkg/server/controllers/books_test.go b/pkg/server/controllers/books_test.go
index e2302f22..af6ba42d 100644
--- a/pkg/server/controllers/books_test.go
+++ b/pkg/server/controllers/books_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package controllers
diff --git a/pkg/server/controllers/controllers.go b/pkg/server/controllers/controllers.go
index b0cbe550..4ab9980d 100644
--- a/pkg/server/controllers/controllers.go
+++ b/pkg/server/controllers/controllers.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package controllers
diff --git a/pkg/server/controllers/health.go b/pkg/server/controllers/health.go
index fb12033d..85d8e048 100644
--- a/pkg/server/controllers/health.go
+++ b/pkg/server/controllers/health.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package controllers
diff --git a/pkg/server/controllers/health_test.go b/pkg/server/controllers/health_test.go
index cec8d35a..56fe9778 100644
--- a/pkg/server/controllers/health_test.go
+++ b/pkg/server/controllers/health_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package controllers
diff --git a/pkg/server/controllers/helpers.go b/pkg/server/controllers/helpers.go
index 72100c8b..c17e83a1 100644
--- a/pkg/server/controllers/helpers.go
+++ b/pkg/server/controllers/helpers.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package controllers
diff --git a/pkg/server/controllers/main_test.go b/pkg/server/controllers/main_test.go
index 35eef6da..cc0383b3 100644
--- a/pkg/server/controllers/main_test.go
+++ b/pkg/server/controllers/main_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package controllers
diff --git a/pkg/server/controllers/notes.go b/pkg/server/controllers/notes.go
index 4db709da..964a608f 100644
--- a/pkg/server/controllers/notes.go
+++ b/pkg/server/controllers/notes.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package controllers
diff --git a/pkg/server/controllers/notes_test.go b/pkg/server/controllers/notes_test.go
index b69f7c1e..afbca59b 100644
--- a/pkg/server/controllers/notes_test.go
+++ b/pkg/server/controllers/notes_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package controllers
diff --git a/pkg/server/controllers/routes.go b/pkg/server/controllers/routes.go
index ff7be403..3552d081 100644
--- a/pkg/server/controllers/routes.go
+++ b/pkg/server/controllers/routes.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package controllers
diff --git a/pkg/server/controllers/routes_test.go b/pkg/server/controllers/routes_test.go
index d3084aa3..0d146fe6 100644
--- a/pkg/server/controllers/routes_test.go
+++ b/pkg/server/controllers/routes_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package controllers
diff --git a/pkg/server/controllers/static.go b/pkg/server/controllers/static.go
index 5590daec..42872438 100644
--- a/pkg/server/controllers/static.go
+++ b/pkg/server/controllers/static.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package controllers
diff --git a/pkg/server/controllers/sync.go b/pkg/server/controllers/sync.go
index 3d7d2608..7cda4316 100644
--- a/pkg/server/controllers/sync.go
+++ b/pkg/server/controllers/sync.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package controllers
diff --git a/pkg/server/controllers/sync_test.go b/pkg/server/controllers/sync_test.go
index ab33956a..e97ecb50 100644
--- a/pkg/server/controllers/sync_test.go
+++ b/pkg/server/controllers/sync_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package controllers
diff --git a/pkg/server/controllers/testutils.go b/pkg/server/controllers/testutils.go
index 03a097c8..5da11a41 100644
--- a/pkg/server/controllers/testutils.go
+++ b/pkg/server/controllers/testutils.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package controllers
diff --git a/pkg/server/controllers/users.go b/pkg/server/controllers/users.go
index bf1e6384..26881668 100644
--- a/pkg/server/controllers/users.go
+++ b/pkg/server/controllers/users.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package controllers
diff --git a/pkg/server/controllers/users_test.go b/pkg/server/controllers/users_test.go
index 03f6c53e..f5ddf5b5 100644
--- a/pkg/server/controllers/users_test.go
+++ b/pkg/server/controllers/users_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package controllers
diff --git a/pkg/server/crypt/crypt.go b/pkg/server/crypt/crypt.go
index 1be220dd..fb0edd26 100644
--- a/pkg/server/crypt/crypt.go
+++ b/pkg/server/crypt/crypt.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package crypt
diff --git a/pkg/server/database/consts.go b/pkg/server/database/consts.go
index 6a9abc0c..4406ee5c 100644
--- a/pkg/server/database/consts.go
+++ b/pkg/server/database/consts.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package database
diff --git a/pkg/server/database/database.go b/pkg/server/database/database.go
index 2c5241b4..c5804880 100644
--- a/pkg/server/database/database.go
+++ b/pkg/server/database/database.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package database
diff --git a/pkg/server/database/errors.go b/pkg/server/database/errors.go
index 6e0faeb6..ada00a6d 100644
--- a/pkg/server/database/errors.go
+++ b/pkg/server/database/errors.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package database
diff --git a/pkg/server/database/migrate.go b/pkg/server/database/migrate.go
index 4250fd80..59e4c820 100644
--- a/pkg/server/database/migrate.go
+++ b/pkg/server/database/migrate.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package database
diff --git a/pkg/server/database/migrate_test.go b/pkg/server/database/migrate_test.go
index 31853730..4ee93627 100644
--- a/pkg/server/database/migrate_test.go
+++ b/pkg/server/database/migrate_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package database
diff --git a/pkg/server/database/migrations/embed.go b/pkg/server/database/migrations/embed.go
index 152d9e14..1c644d57 100644
--- a/pkg/server/database/migrations/embed.go
+++ b/pkg/server/database/migrations/embed.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package migrations
diff --git a/pkg/server/database/models.go b/pkg/server/database/models.go
index f21e8636..6ee4d3a7 100644
--- a/pkg/server/database/models.go
+++ b/pkg/server/database/models.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package database
diff --git a/pkg/server/database/notes.go b/pkg/server/database/notes.go
index 680c53db..b8cb8450 100644
--- a/pkg/server/database/notes.go
+++ b/pkg/server/database/notes.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package database
diff --git a/pkg/server/database/types.go b/pkg/server/database/types.go
index da3b4d6f..60544c29 100644
--- a/pkg/server/database/types.go
+++ b/pkg/server/database/types.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package database
diff --git a/pkg/server/helpers/const.go b/pkg/server/helpers/const.go
index e0967cc7..3a634d09 100644
--- a/pkg/server/helpers/const.go
+++ b/pkg/server/helpers/const.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package helpers
diff --git a/pkg/server/helpers/url.go b/pkg/server/helpers/url.go
index 73c489fe..0d935754 100644
--- a/pkg/server/helpers/url.go
+++ b/pkg/server/helpers/url.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package helpers
diff --git a/pkg/server/helpers/url_test.go b/pkg/server/helpers/url_test.go
index 55bb2fcc..78142b29 100644
--- a/pkg/server/helpers/url_test.go
+++ b/pkg/server/helpers/url_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package helpers
diff --git a/pkg/server/helpers/uuid.go b/pkg/server/helpers/uuid.go
index 572ea6be..ed1090d4 100644
--- a/pkg/server/helpers/uuid.go
+++ b/pkg/server/helpers/uuid.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package helpers
diff --git a/pkg/server/log/log.go b/pkg/server/log/log.go
index 89eeb719..60543acf 100644
--- a/pkg/server/log/log.go
+++ b/pkg/server/log/log.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 // Package log provides interfaces to write structured logs
diff --git a/pkg/server/log/log_test.go b/pkg/server/log/log_test.go
index 3df63b3a..488e3725 100644
--- a/pkg/server/log/log_test.go
+++ b/pkg/server/log/log_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package log
diff --git a/pkg/server/mailer/backend.go b/pkg/server/mailer/backend.go
index 0abe51d8..e282e03c 100644
--- a/pkg/server/mailer/backend.go
+++ b/pkg/server/mailer/backend.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package mailer
diff --git a/pkg/server/mailer/backend_test.go b/pkg/server/mailer/backend_test.go
index 5ef0a355..2838a19d 100644
--- a/pkg/server/mailer/backend_test.go
+++ b/pkg/server/mailer/backend_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package mailer
diff --git a/pkg/server/mailer/mailer.go b/pkg/server/mailer/mailer.go
index 1cf786a7..10457252 100644
--- a/pkg/server/mailer/mailer.go
+++ b/pkg/server/mailer/mailer.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 // Package mailer provides a functionality to send emails
diff --git a/pkg/server/mailer/mailer_test.go b/pkg/server/mailer/mailer_test.go
index 5837192a..e08c9c55 100644
--- a/pkg/server/mailer/mailer_test.go
+++ b/pkg/server/mailer/mailer_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package mailer
diff --git a/pkg/server/mailer/templates/templates.go b/pkg/server/mailer/templates/templates.go
index c59d3a14..78fedd07 100644
--- a/pkg/server/mailer/templates/templates.go
+++ b/pkg/server/mailer/templates/templates.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 // Package mailer provides a functionality to send emails
diff --git a/pkg/server/mailer/tokens.go b/pkg/server/mailer/tokens.go
index 0f751a4e..669c4820 100644
--- a/pkg/server/mailer/tokens.go
+++ b/pkg/server/mailer/tokens.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package mailer
diff --git a/pkg/server/mailer/tokens_test.go b/pkg/server/mailer/tokens_test.go
index 72a85fc6..4f4fa73d 100644
--- a/pkg/server/mailer/tokens_test.go
+++ b/pkg/server/mailer/tokens_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package mailer
diff --git a/pkg/server/mailer/types.go b/pkg/server/mailer/types.go
index 6ad862de..17363398 100644
--- a/pkg/server/mailer/types.go
+++ b/pkg/server/mailer/types.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package mailer
diff --git a/pkg/server/main.go b/pkg/server/main.go
index 701912ea..737cc7a6 100644
--- a/pkg/server/main.go
+++ b/pkg/server/main.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package main
diff --git a/pkg/server/middleware/auth.go b/pkg/server/middleware/auth.go
index daf92dc3..9383d33d 100644
--- a/pkg/server/middleware/auth.go
+++ b/pkg/server/middleware/auth.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package middleware
diff --git a/pkg/server/middleware/auth_test.go b/pkg/server/middleware/auth_test.go
index 95c935a2..c6d0ead4 100644
--- a/pkg/server/middleware/auth_test.go
+++ b/pkg/server/middleware/auth_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package middleware
diff --git a/pkg/server/middleware/helpers.go b/pkg/server/middleware/helpers.go
index f43d0abb..580efa7f 100644
--- a/pkg/server/middleware/helpers.go
+++ b/pkg/server/middleware/helpers.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package middleware
diff --git a/pkg/server/middleware/helpers_test.go b/pkg/server/middleware/helpers_test.go
index 623ec818..3142326f 100644
--- a/pkg/server/middleware/helpers_test.go
+++ b/pkg/server/middleware/helpers_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package middleware
diff --git a/pkg/server/middleware/limit.go b/pkg/server/middleware/limit.go
index 2f737613..6985809e 100644
--- a/pkg/server/middleware/limit.go
+++ b/pkg/server/middleware/limit.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package middleware
diff --git a/pkg/server/middleware/limit_test.go b/pkg/server/middleware/limit_test.go
index 1d5743ee..594d0a94 100644
--- a/pkg/server/middleware/limit_test.go
+++ b/pkg/server/middleware/limit_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package middleware
diff --git a/pkg/server/middleware/logging.go b/pkg/server/middleware/logging.go
index 05cdd2cb..13c9a9c9 100644
--- a/pkg/server/middleware/logging.go
+++ b/pkg/server/middleware/logging.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package middleware
diff --git a/pkg/server/middleware/middleware.go b/pkg/server/middleware/middleware.go
index 582e8046..e509c169 100644
--- a/pkg/server/middleware/middleware.go
+++ b/pkg/server/middleware/middleware.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package middleware
diff --git a/pkg/server/operations/doc.go b/pkg/server/operations/doc.go
index 981c9f5c..7a4fe7c8 100644
--- a/pkg/server/operations/doc.go
+++ b/pkg/server/operations/doc.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 /*
diff --git a/pkg/server/operations/notes.go b/pkg/server/operations/notes.go
index ee6dd9af..74b279e4 100644
--- a/pkg/server/operations/notes.go
+++ b/pkg/server/operations/notes.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package operations
diff --git a/pkg/server/operations/notes_test.go b/pkg/server/operations/notes_test.go
index a2ccb023..a09c1c28 100644
--- a/pkg/server/operations/notes_test.go
+++ b/pkg/server/operations/notes_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package operations
diff --git a/pkg/server/permissions/permissions.go b/pkg/server/permissions/permissions.go
index d9d017d9..54427acf 100644
--- a/pkg/server/permissions/permissions.go
+++ b/pkg/server/permissions/permissions.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package permissions
diff --git a/pkg/server/permissions/permissions_test.go b/pkg/server/permissions/permissions_test.go
index 13f13f97..2a5daca1 100644
--- a/pkg/server/permissions/permissions_test.go
+++ b/pkg/server/permissions/permissions_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package permissions
diff --git a/pkg/server/presenters/book.go b/pkg/server/presenters/book.go
index 85242b26..9c117726 100644
--- a/pkg/server/presenters/book.go
+++ b/pkg/server/presenters/book.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package presenters
diff --git a/pkg/server/presenters/book_test.go b/pkg/server/presenters/book_test.go
index 98155769..bf8a1b48 100644
--- a/pkg/server/presenters/book_test.go
+++ b/pkg/server/presenters/book_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package presenters
diff --git a/pkg/server/presenters/helpers.go b/pkg/server/presenters/helpers.go
index 491e575e..3cce728c 100644
--- a/pkg/server/presenters/helpers.go
+++ b/pkg/server/presenters/helpers.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package presenters
diff --git a/pkg/server/presenters/helpers_test.go b/pkg/server/presenters/helpers_test.go
index c48c90ea..33b0ed2e 100644
--- a/pkg/server/presenters/helpers_test.go
+++ b/pkg/server/presenters/helpers_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package presenters
diff --git a/pkg/server/presenters/note.go b/pkg/server/presenters/note.go
index a20bb879..267717da 100644
--- a/pkg/server/presenters/note.go
+++ b/pkg/server/presenters/note.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package presenters
diff --git a/pkg/server/presenters/note_test.go b/pkg/server/presenters/note_test.go
index 878acf67..ee2fe78d 100644
--- a/pkg/server/presenters/note_test.go
+++ b/pkg/server/presenters/note_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package presenters
diff --git a/pkg/server/session/session.go b/pkg/server/session/session.go
index d7c3d0d8..b9ae62d4 100644
--- a/pkg/server/session/session.go
+++ b/pkg/server/session/session.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package session
diff --git a/pkg/server/session/session_test.go b/pkg/server/session/session_test.go
index dddfa18b..081a82de 100644
--- a/pkg/server/session/session_test.go
+++ b/pkg/server/session/session_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package session
diff --git a/pkg/server/testutils/main.go b/pkg/server/testutils/main.go
index 6b7c21b6..dd10941e 100644
--- a/pkg/server/testutils/main.go
+++ b/pkg/server/testutils/main.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 // Package testutils provides utilities used in tests
diff --git a/pkg/server/token/token.go b/pkg/server/token/token.go
index f482d2aa..af1feda5 100644
--- a/pkg/server/token/token.go
+++ b/pkg/server/token/token.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package token
diff --git a/pkg/server/token/token_test.go b/pkg/server/token/token_test.go
index c7469d4f..5daed181 100644
--- a/pkg/server/token/token_test.go
+++ b/pkg/server/token/token_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package token
diff --git a/pkg/server/views/data.go b/pkg/server/views/data.go
index 98444364..87fd2a90 100644
--- a/pkg/server/views/data.go
+++ b/pkg/server/views/data.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package views
diff --git a/pkg/server/views/embed.go b/pkg/server/views/embed.go
index b3a070a0..1fcb7d19 100644
--- a/pkg/server/views/embed.go
+++ b/pkg/server/views/embed.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package views
diff --git a/pkg/server/views/engine.go b/pkg/server/views/engine.go
index b8127b03..fbad7979 100644
--- a/pkg/server/views/engine.go
+++ b/pkg/server/views/engine.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package views
diff --git a/pkg/server/views/helpers.go b/pkg/server/views/helpers.go
index ac4546f7..3e8f1d56 100644
--- a/pkg/server/views/helpers.go
+++ b/pkg/server/views/helpers.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package views
diff --git a/pkg/server/views/helpers_test.go b/pkg/server/views/helpers_test.go
index 56bb7912..af39b48c 100644
--- a/pkg/server/views/helpers_test.go
+++ b/pkg/server/views/helpers_test.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package views
diff --git a/pkg/server/views/time.go b/pkg/server/views/time.go
index e99d36c9..88c71169 100644
--- a/pkg/server/views/time.go
+++ b/pkg/server/views/time.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package views
diff --git a/pkg/server/views/view.go b/pkg/server/views/view.go
index 438735a1..53315334 100644
--- a/pkg/server/views/view.go
+++ b/pkg/server/views/view.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package views
diff --git a/pkg/watcher/main.go b/pkg/watcher/main.go
index a548aafe..7509fb90 100644
--- a/pkg/watcher/main.go
+++ b/pkg/watcher/main.go
@@ -1,19 +1,16 @@
-/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package main
diff --git a/scripts/cli/build.sh b/scripts/cli/build.sh
index c5c6043c..d17cb477 100755
--- a/scripts/cli/build.sh
+++ b/scripts/cli/build.sh
@@ -98,7 +98,7 @@ build() {
   tarballName="dnote_${version}_${platform}_${arch}.tar.gz"
   tarballPath="$outputDir/$tarballName"
 
-  cp "$projectDir/licenses/GPLv3.txt" "$destDir"
+  cp "$projectDir/LICENSE" "$destDir"
   cp "$basedir/README.md" "$destDir"
   tar -C "$destDir" -zcvf "$tarballPath" "."
   rm -rf "$destDir"
diff --git a/scripts/license.sh b/scripts/license.sh
index d75b656b..4f96780c 100755
--- a/scripts/license.sh
+++ b/scripts/license.sh
@@ -2,74 +2,45 @@
 set -eux
 
 function remove_notice {
-  sed -i -e '/\/\* Copyright/,/\*\//d' "$1"
-
-  # remove leading newline
-  sed -i '/./,$!d' "$1"
+  # Remove old copyright notice - matches /* Copyright ... */ including the trailing newline
+  # The 's' flag makes . match newlines, allowing multi-line matching
+  # The \n? matches an optional newline after the closing */
+  perl -i -0pe 's/\/\* Copyright.*?\*\/\n?//s' "$1"
 }
 
 function add_notice {
   ed "$1" <<END
 0i
 $2
-
 .
 w
 q
 END
 }
 
-gpl="/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
+license="/* Copyright 2025 Dnote Authors
  *
- * This file is part of Dnote.
+ * Licensed under the Apache License, Version 2.0 (the \"License\");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
  *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
- */"
-
-agpl="/* Copyright (C) 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dnote contributors
- *
- * This file is part of Dnote.
- *
- * Dnote is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Dnote is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with Dnote.  If not, see <https://www.gnu.org/licenses/>.
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an \"AS IS\" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */"
 
 dir=$(dirname "${BASH_SOURCE[0]}")
 basedir="$dir/.."
 pkgPath="$basedir/pkg"
-serverPath="$basedir/pkg/server"
 
-gplFiles=$(find "$pkgPath" -type f \( -name "*.go" -o -name "*.js" -o -name "*.ts" -o -name "*.tsx" -o -name "*.scss" -o -name "*.css"  \) ! -path "**/vendor/*" ! -path "**/node_modules/*" ! -path "$serverPath/*")
+# Apply license to all source files
+allFiles=$(find "$pkgPath" -type f \( -name "*.go" -o -name "*.js" -o -name "*.ts" -o -name "*.tsx" -o -name "*.scss" -o -name "*.css"  \) ! -path "**/vendor/*" ! -path "**/node_modules/*" ! -path "**/dist/*")
 
-for file in $gplFiles; do
+for file in $allFiles; do
   remove_notice "$file"
-  add_notice "$file" "$gpl"
-done
-
-agplFiles=$(find "$serverPath" -type f \( -name "*.go" -o -name "*.js" -o -name "*.ts" -o -name "*.tsx" -o -name "*.scss" -o -name "*.css" \) ! -path "**/vendor/*" ! -path "**/node_modules/*" ! -path "**/dist/*")
-
-for file in $agplFiles; do
-  remove_notice "$file"
-  add_notice "$file" "$agpl"
+  add_notice "$file" "$license"
 done
diff --git a/scripts/server/build.sh b/scripts/server/build.sh
index f9c6428e..09bc16e3 100755
--- a/scripts/server/build.sh
+++ b/scripts/server/build.sh
@@ -57,7 +57,7 @@ build() {
   tarballName="dnote_server_${version}_${platform}_${arch}.tar.gz"
   tarballPath="$outputDir/$tarballName"
 
-  cp "$projectDir/licenses/AGPLv3.txt" "$destDir"
+  cp "$projectDir/LICENSE" "$destDir"
   cp "$basedir/README.md" "$destDir"
   tar -C "$destDir" -zcvf "$tarballPath" "."
   rm -rf "$destDir"