Implement comprehensive LLM provider system with global cost protection

- Add multi-provider LLM architecture supporting OpenRouter, OpenAI, Gemini, and custom providers
- Implement global LLM on/off switch with default DISABLED state for cost protection
- Add per-character LLM configuration with provider-specific models and settings
- Create performance-optimized caching system for LLM enabled status checks
- Add API key validation before enabling LLM providers to prevent broken configurations
- Implement audit logging for all LLM enable/disable actions for cost accountability
- Create comprehensive admin UI with prominent cost warnings and confirmation dialogs
- Add visual indicators in character list for custom AI model configurations
- Build character-specific LLM client system with global fallback mechanism
- Add database schema support for per-character LLM settings
- Implement graceful fallback responses when LLM is globally disabled
- Create provider testing and validation system for reliable connections

check_character_data.py

@@ -0,0 +1,36 @@
+#!/usr/bin/env python3
+"""
+Check current character data in database
+"""
+
+import asyncio
+from sqlalchemy import select
+from src.database.connection import init_database, get_db_session
+from src.database.models import Character
+
+async def check_character_data():
+    """Check current character data"""
+    
+    await init_database()
+    
+    async with get_db_session() as session:
+        # Get all characters
+        characters_query = select(Character)
+        characters = await session.scalars(characters_query)
+        
+        for character in characters:
+            print(f"\n{'='*50}")
+            print(f"Character: {character.name}")
+            print(f"{'='*50}")
+            print(f"Personality: {character.personality[:100] if character.personality else 'None'}{'...' if character.personality and len(character.personality) > 100 else ''}")
+            print(f"Interests: {character.interests}")
+            print(f"Speaking Style: {character.speaking_style}")
+            print(f"Background: {character.background}")
+            print(f"Is Active: {character.is_active}")
+            print(f"\nSystem Prompt:")
+            print("-" * 30)
+            print(character.system_prompt if character.system_prompt else "None")
+            print("-" * 30)
+
+if __name__ == "__main__":
+    asyncio.run(check_character_data())