add attribution requirement when forking (#2182)

## Description:

Describe the PR.

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced

## Please put your Discord username so you can be contacted if a bug or
regression is found:

evan

LICENSE

@@ -658,4 +658,25 @@ specific requirements.
   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/>.
+<https://www.gnu.org/licenses/>.
+
+
+=== ADDITIONAL TERMS (AGPL v3 Section 7) ===
+
+Attribution Requirement:
+All versions of this software must prominently display one of the following 
+on the main menu/UI screen:
+- "Based on OpenFront"
+- "Derived from OpenFront"
+- "Powered by OpenFront"
+- "Fork of OpenFront"
+
+The attribution must be clearly visible and may not imply the 
+fork is the original OpenFront or officially endorsed. Forks may 
+add their own project name (e.g., "SuperGame - Based on OpenFront")
+but may not use "OpenFront" as the primary title or imply official
+status.
+
+Trademark Notice:
+"OpenFront" is a registered trademark. Use of the trademark must 
+comply with applicable trademark law.

LICENSING.md

@@ -55,6 +55,15 @@ This document provides comprehensive licensing information for the OpenFront.io
   - Proprietary assets override open assets during build process
   - Contributors retain copyright while granting usage rights to OpenFront LLC
 
+### Phase 5: AGPL with Additional Attribution Terms
+
+- **Starting After:** 136cfa1316dd584bece48f7ad9f8f17e8603f1c7
+- **Date:** October 12, 2025
+- **Changes:**
+  - Added Section 7 attribution requirement to AGPL v3.0
+  - All forks must display "Based on OpenFront" (or similar) on main menu
+  - Make clear that "OpenFront" is a registered trademark
+
 ## Important Notes
 
 ### For Code:

README.md

@@ -16,6 +16,14 @@ This is a fork/rewrite of WarFront.io. Credit to https://github.com/WarFrontIO.
 [![License: AGPL v3](https://img.shields.io/badge/License-AGPL%20v3-blue.svg)](https://www.gnu.org/licenses/agpl-3.0)
 [![Assets: CC BY-SA 4.0](https://img.shields.io/badge/Assets-CC%20BY--SA%204.0-lightgrey.svg)](https://creativecommons.org/licenses/by-sa/4.0/)
 
+## License
+
+OpenFront is licensed under the **GNU Affero General Public License v3.0** with additional attribution requirements:
+
+- Any forks must display attribution (e.g., "Based on OpenFront") prominently on the main menu
+
+See the [LICENSE](LICENSE) file for full details.
+
 ## 🌟 Features
 
 - **Real-time Strategy Gameplay**: Expand your territory and engage in strategic battles