feat: Implement Living AI system

Complete implementation of the Living AI features:

Phase 1 - Foundation:
- MoodService: Valence-arousal mood model with time decay
- RelationshipService: Stranger→Close Friend progression
- Enhanced system prompt with personality modifiers

Phase 2 - Autonomous Learning:
- FactExtractionService: AI-powered fact extraction from conversations
- Rate-limited extraction (configurable, default 30%)
- Deduplication and importance scoring

Phase 3 - Personalization:
- CommunicationStyleService: Learn user preferences
- OpinionService: Bot opinion formation on topics
- SelfAwarenessService: Bot statistics and self-reflection

Phase 4 - Proactive Features:
- ProactiveService: Scheduled events (birthdays, follow-ups)
- Event detection from conversations
- Recurring event support

Phase 5 - Social Features:
- AssociationService: Cross-user memory connections
- Shared interest discovery
- Connection suggestions

New database tables:
- bot_states, bot_opinions, user_relationships
- user_communication_styles, scheduled_events
- fact_associations, mood_history

Configuration:
- Living AI feature toggles
- Individual command enable/disable
- All features work naturally through conversation when commands disabled

src/daemon_boyfriend/models/__init__.py

@@ -3,15 +3,31 @@
 from .base import Base
 from .conversation import Conversation, Message
 from .guild import Guild, GuildMember
+from .living_ai import (
+    BotOpinion,
+    BotState,
+    FactAssociation,
+    MoodHistory,
+    ScheduledEvent,
+    UserCommunicationStyle,
+    UserRelationship,
+)
 from .user import User, UserFact, UserPreference
 
 __all__ = [
     "Base",
+    "BotOpinion",
+    "BotState",
     "Conversation",
+    "FactAssociation",
     "Guild",
     "GuildMember",
     "Message",
+    "MoodHistory",
+    "ScheduledEvent",
     "User",
+    "UserCommunicationStyle",
     "UserFact",
     "UserPreference",
+    "UserRelationship",
 ]