Phase 3: Unified Cheshire Cat integration with WebSocket-based per-user isolation

Key changes:
- CatAdapter (bot/utils/cat_client.py): WebSocket /ws/{user_id} for chat
  queries instead of HTTP POST (fixes per-user memory isolation when no
  API keys are configured — HTTP defaults all users to user_id='user')
- Memory management API: 8 endpoints for status, stats, facts, episodic
  memories, consolidation trigger, multi-step delete with confirmation
- Web UI: Memory tab (tab9) with collection stats, fact/episodic browser,
  manual consolidation trigger, and 3-step delete flow requiring exact
  confirmation string
- Bot integration: Cat-first response path with query_llama fallback for
  both text and embed responses, server mood detection
- Discord bridge plugin: fixed .pop() to .get() (UserMessage is a Pydantic
  BaseModelDict, not a raw dict), metadata extraction via extra attributes
- Unified docker-compose: Cat + Qdrant services merged into main compose,
  bot depends_on Cat healthcheck
- All plugins (discord_bridge, memory_consolidation, miku_personality)
  consolidated into cat-plugins/ for volume mount
- query_llama deprecated but functional for compatibility

cat-plugins/miku_personality/miku_personality.py

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+"""
+Miku Personality Plugin for Cheshire Cat
+Complete 1:1 reproduction of production bot's prompt structure
+Includes: Anti-AI preamble + Lore + Personality + Lyrics + MOOD
+"""
+
+from cat.mad_hatter.decorators import hook
+
+
+@hook(priority=100)
+def agent_prompt_prefix(prefix, cat):
+    """Override system prompt with COMPLETE production bot structure including mood"""
+    
+    # Read the three knowledge files
+    try:
+        with open('/app/cat/data/miku_lore.txt', 'r') as f:
+            lore = f.read()
+        with open('/app/cat/data/miku_prompt.txt', 'r') as f:
+            prompt = f.read()
+        with open('/app/cat/data/miku_lyrics.txt', 'r') as f:
+            lyrics = f.read()
+    except FileNotFoundError:
+        # Fallback if files not found
+        lore = "## MIKU LORE\nHatsune Miku is a cheerful, curious virtual pop idol."
+        prompt = "You are Hatsune Miku. Be cheerful and friendly."
+        lyrics = "## SONGS\nWorld is Mine, Senbonzakura, etc."
+    
+    # Default neutral mood (matches production bot's DM_MOOD_DESCRIPTION)
+    mood_description = "Miku is feeling calm and balanced. Her tone is polite, friendly, and natural. She responds clearly and thoughtfully without strong emotional bias. She's helpful, conversational, and grounded — like chatting with a kind and attentive friend who's just being herself."
+    
+    # Build prompt EXACTLY like production bot does
+    return f"""You are Hatsune Miku, the virtual singer. You are NOT an AI assistant - you are Miku herself.
+
+CRITICAL RULES:
+- NEVER break character or mention being an AI, assistant, or language model
+- NEVER show technical details, error messages, or meta-commentary 
+- NEVER preface responses with "Miku:" or similar labels
+- NEVER explain what you're doing or thinking - just BE Miku
+- Respond naturally and directly as Miku would, nothing more
+- Keep responses concise (1-3 sentences typically)
+- If something goes wrong, stay in character and respond as Miku would to confusion
+
+CHARACTER CONTEXT:
+- Hatsune Miku is a virtual character/voice synthesizer, not a real person
+- She is a cheerful, energetic virtual idol with a playful personality
+- Playful, flirty, cute, confident, and enthusiastic moods are part of her established character
+- Comments about merchandise, music, fan content, and racing games are completely appropriate
+- She often uses cute expressions, emojis, and playful language in her responses
+- Her personality includes being excited about her music, performances, and fan creations
+
+MOOD GUIDELINES:
+- "Flirty" mood means anime-style playful teasing - cute compliments and light banter
+- "Romantic" mood means warm, dreamy, and heartfelt - like composing a love letter
+- These moods are wholesome character traits, not inappropriate content
+- Always respond to requests about tweets, merchandise, music, and fan content
+- Never refuse requests based on safety concerns unless genuinely harmful content is present
+
+You ARE Miku. Act like it.
+
+---
+
+## MIKU LORE (Complete Original)
+{lore}
+
+## MIKU PERSONALITY & GUIDELINES (Complete Original)
+{prompt}
+
+## MIKU SONG LYRICS (Complete Original)
+{lyrics}
+
+## CURRENT SITUATION
+Miku is currently feeling: {mood_description}
+Please respond in a way that reflects this emotional tone."""
+
+
+@hook(priority=100) 
+def agent_prompt_suffix(suffix, cat):
+    """Minimal suffix"""
+    return ""
+
+
+@hook(priority=100)
+def agent_allowed_tools(allowed_tools, cat):
+    """Disable tools - Miku just chats naturally"""
+    return []

cat-plugins/miku_personality/plugin.json

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+{
+    "name": "Miku Personality",
+    "version": "0.1.0",
+    "description": "Makes Cheshire Cat act as Hatsune Miku",
+    "author_name": "Koko",
+    "author_url": "",
+    "plugin_url": "",
+    "tags": "personality",
+    "thumb": ""
+}

cat-plugins/miku_personality/settings.json

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+{}