fix(ModularBot): ram loop prevention, dead-target guards, cleaner logging

- 30-tick cooldown after ghost-stuck/timeout ram exit prevents re-entry loop
- enemy_tracker.update() skips dead bots to prevent same-tick scan resurrection
- TFIL graphics cleared when ramming is active movement
- [config] logs: white base with green-highlighted changes only
- [ram:enter] logs trigger reason and key values on false→true transition
- [death] and [target-invalid] logs retained for diagnostics

common_libs/guns/head_on.nim

@@ -4,7 +4,7 @@
 import gun_harness/gun_interface
 
 type HeadOnGun* = object
-  discard
+  debugGraphics*: bool
 
 proc predict*(g: var HeadOnGun, state: WorldState, bulletSpeed: float): GunPrediction =
   GunPrediction(x: state.enemyX, y: state.enemyY)