Fix combat spam: don't stack interrupts, 5s cooldown after combat

- Don't create new combat/flee interrupt if one is already active
- 5-second cooldown after combat before re-engaging
- Prevents Doug from attacking dead mobs repeatedly

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

dougbot/core/brain.py

@@ -26,7 +26,7 @@ from dougbot.bridge.ws_client import BridgeWSClient
 from dougbot.bridge.protocol import ResponseMessage
 from dougbot.core.task_queue import (
     TaskStack, PrimaryTask, SubTask, Priority, TaskStatus,
-    make_task, make_interrupt,
+    make_task, make_interrupt, TaskStatus,
 )
 from dougbot.core.behaviors import (
     NeedsSystem, GoalManager, SpatialMemory, DailyRoutine, BehaviorEngine,
@@ -74,6 +74,7 @@ class DougBrain(QObject):
 
         # Action tracking
         self._action_sent_time = 0.0
+        self._last_combat_time = 0.0
 
     def start(self):
         self._running = True
@@ -227,6 +228,14 @@ class DougBrain(QObject):
 
     def _check_interrupts(self):
         """Check for immediate threats that need a temporary interrupt."""
+        # Don't stack interrupts — if already fighting/fleeing, let it finish
+        if self._tasks._interruption and self._tasks._interruption.status == TaskStatus.ACTIVE:
+            return
+
+        # Cooldown after combat — don't re-engage for 5 seconds
+        if hasattr(self, '_last_combat_time') and time.time() - self._last_combat_time < 5:
+            return
+
         b = self._behaviors
         bravery = self._traits.get("bravery", 50)
 
@@ -243,6 +252,7 @@ class DougBrain(QObject):
         should_flee = (not should_fight) and (dist < 8) and (b.health < 14 or bravery < 30)
 
         if should_fight:
+            self._last_combat_time = time.time()
             self._tasks.interrupt(make_interrupt(
                 "combat", f"Fighting {mob_type}!",
                 "attack_nearest_hostile", {"range": 6}, timeout=12,