update license - clarify attribution requirement (#2192)

## Description:

Clarify and add additional requirements to attribution.

## 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

@@ -660,23 +660,24 @@ 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/>.
 
-
 === 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:
+All modified versions of this web game must prominently display one of the 
+following on the main menu and/or initial title 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.
+Display Requirements:
+- Positioned directly beneath the game's title
+- Minimum 12-point font size (or proportional equivalent)
+- Sufficient contrast for clear readability
+- Visible without scrolling or navigation
+- Must remain visible until user chooses to proceed (no auto-skip)
+- May include a link to https://openfront.io
 
-Trademark Notice:
-"OpenFront" is a trademark. Use of the trademark must 
-comply with applicable trademark law.
+Modified versions may add their own game title (e.g., 
+"SuperGame - Based on OpenFront") but may not use "OpenFront" 
+as the primary title or imply official endorsement.

LICENSING.md

@@ -64,6 +64,14 @@ This document provides comprehensive licensing information for the OpenFront.io
   - All forks must display "Based on OpenFront" (or similar) on main menu
   - Make clear that "OpenFront" is a registered trademark
 
+### Phase 6: Clarified AGPL Additional Attribution Terms
+
+- **Starting After:** e7497bfb767c4bf3e1e00eac0a13de995419f8b5
+- **Date:** October 14, 2025
+- **Changes:**
+  - Added additional Section 7 attribution requirements to the LICENSE
+  - Removed trademark notice from LICENSE file as it's unnecessary
+
 ## Important Notes
 
 ### For Code:

README.md

@@ -20,11 +20,12 @@ This is a fork/rewrite of WarFront.io. Credit to https://github.com/WarFrontIO.
 
 OpenFront source code is licensed under the **GNU Affero General Public License v3.0** with additional attribution requirements:
 
-- Any forks or derivative works must display attribution (e.g., "Based on OpenFront", "Derived from OpenFront", "Powered by OpenFront", or "Fork of OpenFront") prominently on the main menu/UI screen
-- Forks must not use "OpenFront" as the primary title or imply official endorsement
-- "OpenFront" is a trademark and must be used in compliance with applicable trademark law
+- Any forks or derivative works must display attribution (e.g., "Based on OpenFront", "Derived from OpenFront", "Powered by OpenFront", or "Fork of OpenFront") prominently on the main menu and/or initial title screen.
 
-See [LICENSE](LICENSE), [LICENSE-ASSETS](LICENSE-ASSETS), and [LICENSING.md](LICENSING.md) for full details.
+See the `ADDITIONAL TERMS` section in [LICENSE](LICENSE) for complete requirements.
+
+For asset licensing, see [LICENSE-ASSETS](LICENSE-ASSETS).  
+For license history, see [LICENSING.md](LICENSING.md).
 
 ## 🌟 Features