feat: Restore mood system and implement comprehensive memory editor UI

MOOD SYSTEM FIX:
- Mount bot/moods directory in docker-compose.yml for Cat container access
- Update miku_personality plugin to load mood descriptions from .txt files
- Add Cat logger for debugging mood loading (replaces print statements)
- Moods now dynamically loaded from working_memory instead of hardcoded neutral

cat-plugins/miku_personality/miku_personality.py

@@ -5,6 +5,7 @@ Includes: Anti-AI preamble + Lore + Personality + Lyrics + MOOD
 """
 
 from cat.mad_hatter.decorators import hook
+from cat.log import log
 
 
 @hook(priority=100)
@@ -25,9 +26,23 @@ def agent_prompt_prefix(prefix, cat):
         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)
+    # Get mood from working memory (set by discord_bridge)
+    mood_name = cat.working_memory.get('mood', 'neutral')
+    log.warning(f"[Miku Personality] Mood from working_memory: {mood_name}")
+    
+    # Load mood description from file
     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."
     
+    try:
+        # Construct path to mood file
+        mood_file_path = f'/app/moods/{mood_name}.txt'
+        with open(mood_file_path, 'r', encoding='utf-8') as f:
+            mood_description = f.read().strip()
+        log.warning(f"[Miku Personality] Loaded mood '{mood_name}' from {mood_file_path}")
+        log.warning(f"[Miku Personality] Mood description: {mood_description[:100]}...")
+    except FileNotFoundError:
+        log.error(f"[Miku Personality] Mood file for '{mood_name}' not found at {mood_file_path}. Using default neutral mood.")
+    
     # 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.