feat: Update enemy AI and movement systems

- Enhanced Physics2D layer collision report with new interactions between Player and Enemy layers.
- Refactored BD_InvestigateLastKnown to streamline animation handling and improve readability.
- Simplified BD_MaintainCombatDistance by consolidating movement stop logic.
- Updated BD_MoveToPlayer to set AI phase on start.
- Improved BD_Patrol logic with better handling of stuck states and path failures.
- Enhanced BD_PatrolWaypoints to manage stuck conditions and retry logic more effectively.
- Refined BD_ReturnToHome to remove unnecessary animation calls.
- Updated BD_WalkRandom to ensure AI phase is set correctly on start.
- Improved EnemyAbilityBase to delegate target facing to the movement system.
- Enhanced EnemyBase with new movement methods for better control.
- Refactored EnemyMovement to introduce a new input system for handling movement and facing.
- Added EnemyMoveInput struct to encapsulate movement intentions.
- Updated Physics2DSettings to reflect new layer collision matrix.
- Introduced RTK CLI instructions for optimized command usage.

.github/copilot-instructions.md

@@ -0,0 +1,27 @@
+<!-- rtk-instructions v2 -->
+# RTK — Token-Optimized CLI
+
+**rtk** is a CLI proxy that filters and compresses command outputs, saving 60-90% tokens.
+
+## Rule
+
+Always prefix shell commands with `rtk`:
+
+```bash
+# Instead of:              Use:
+git status                 rtk git status
+git log -10                rtk git log -10
+cargo test                 rtk cargo test
+docker ps                  rtk docker ps
+kubectl get pods           rtk kubectl pods
+```
+
+## Meta commands (use directly)
+
+```bash
+rtk gain              # Token savings dashboard
+rtk gain --history    # Per-command savings history
+rtk discover          # Find missed rtk opportunities
+rtk proxy <cmd>       # Run raw (no filtering) but track usage
+```
+<!-- /rtk-instructions -->