Add @AGENTS.md import to auto-load quality gate at session start

Claude Code expands @file imports in CLAUDE.md at launch, so the
full quality gate from AGENTS.md is now loaded automatically
instead of relying on Claude following a 'read AGENTS.md' instruction.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: JSvandijk

CLAUDE.md

@@ -63,3 +63,5 @@ Windows APK build: `build-apk.bat`
 This project was built primarily by ChatGPT 5.4 and reviewed by Claude Opus.
 The owner (Jesse) uses this as a comparative evaluation of AI code quality.
 Be honest, strict, and accurate in all assessments.
+
+@AGENTS.md