Implement Evil Miku mode with persistence, fix API event loop issues, and improve formatting

- Added Evil Miku mode with 4 evil moods (aggressive, cunning, sarcastic, evil_neutral)
- Created evil mode content files (evil_miku_lore.txt, evil_miku_prompt.txt, evil_miku_lyrics.txt)
- Implemented persistent evil mode state across restarts (saves to memory/evil_mode_state.json)
- Fixed API endpoints to use client.loop.create_task() to prevent timeout errors
- Added evil mode toggle in web UI with red theme styling
- Modified mood rotation to handle evil mode
- Configured DarkIdol uncensored model for evil mode text generation
- Reduced system prompt redundancy by removing duplicate content
- Added markdown escape for single asterisks (actions) while preserving bold formatting
- Evil mode now persists username, pfp, and nicknames across restarts without re-applying changes

bot/Dockerfile

@@ -31,6 +31,9 @@ COPY api_main.py .
 COPY miku_lore.txt .
 COPY miku_prompt.txt .
 COPY miku_lyrics.txt .
+COPY evil_miku_lore.txt .
+COPY evil_miku_prompt.txt .
+COPY evil_miku_lyrics.txt .
 COPY MikuMikuBeam.mp4 .
 COPY Miku_BasicWorkflow.json .
 COPY moods /app/moods/