Fix gym battle completion error handling

- Fixed tuple index out of range error in end_gym_battle()
- Added proper row factory and named column access in database queries
- Added exception handling and bounds checking in gym battle completion
- Added debug logging to track gym battle state issues
- Improved error messages for gym battle failures

Fixes: "tuple index out of range" error when gym battles complete

🤖 Generated with [Claude Code](https://claude.ai/code)

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

src/database.py

@@ -1065,9 +1065,10 @@ class Database:
     async def end_gym_battle(self, player_id: int, victory: bool = False) -> Optional[Dict]:
         """End gym battle and return final status"""
         async with aiosqlite.connect(self.db_path) as db:
+            db.row_factory = aiosqlite.Row
             # Get battle info before ending it
             cursor = await db.execute("""
-                SELECT agb.*, g.name as gym_name
+                SELECT agb.gym_id, agb.difficulty_level, g.name as gym_name
                 FROM active_gym_battles agb
                 JOIN gyms g ON agb.gym_id = g.id
                 WHERE agb.player_id = ? AND agb.battle_status = 'active'
@@ -1077,6 +1078,8 @@ class Database:
             if not battle:
                 return None
             
+            battle_dict = dict(battle)
+            
             # End the battle
             await db.execute("""
                 UPDATE active_gym_battles 
@@ -1085,15 +1088,15 @@ class Database:
             """, (player_id,))
             
             result = {
-                "gym_id": battle[2],
-                "gym_name": battle[9],
-                "difficulty_level": battle[3],
+                "gym_id": battle_dict["gym_id"],
+                "gym_name": battle_dict["gym_name"],
+                "difficulty_level": battle_dict["difficulty_level"],
                 "victory": victory
             }
             
             # Record victory if successful
             if victory:
-                await self.record_gym_victory(player_id, battle[2])
+                await self.record_gym_victory(player_id, battle_dict["gym_id"])
             
             await db.commit()
             return result