fix(tasks): replace fire-and-forget asyncio.create_task with create_tracked_task

Add utils/task_tracker.py with create_tracked_task() that wraps background
tasks with error logging, cancellation handling, and reference tracking.

Replace all 17 fire-and-forget asyncio.create_task() calls across 7 files:
- bot/bot.py (5 interjection checks)
- bot/utils/autonomous.py (2 check-and-act/react tasks)
- bot/utils/bipolar_mode.py (3 argument tasks)
- bot/commands/uno.py (1 game loop task)
- bot/utils/voice_receiver.py (3 STT/interruption callbacks)
- bot/utils/persona_dialogue.py (4 dialogue turn/interjection tasks)

Previously-tracked tasks (voice_audio.py, voice_manager.py) were left as-is
since they already store task references for cancellation.

Closes #1

bot/utils/bipolar_mode.py

@@ -12,6 +12,7 @@ import asyncio
 import discord
 import globals
 from utils.logger import get_logger
+from utils.task_tracker import create_tracked_task
 
 logger = get_logger('persona')
 
@@ -1113,7 +1114,7 @@ async def maybe_trigger_argument(channel: discord.TextChannel, client, context:
     
     if should_trigger_argument():
         # Run argument in background
-        asyncio.create_task(run_argument(channel, client, context))
+        create_tracked_task(run_argument(channel, client, context), task_name="bipolar_argument")
         return True
     
     return False
@@ -1136,7 +1137,7 @@ async def force_trigger_argument(channel: discord.TextChannel, client, context:
         logger.warning("Argument already in progress in this channel")
         return False
     
-    asyncio.create_task(run_argument(channel, client, context, starting_message))
+    create_tracked_task(run_argument(channel, client, context, starting_message), task_name="bipolar_argument_forced")
     return True
 
 
@@ -1174,5 +1175,5 @@ async def force_trigger_argument_from_message_id(channel_id: int, message_id: in
         return False, f"Failed to fetch message: {str(e)}"
     
     # Trigger the argument with this message as starting point
-    asyncio.create_task(run_argument(channel, client, context, message))
+    create_tracked_task(run_argument(channel, client, context, message), task_name="bipolar_argument_from_msg")
     return True, None