fix: Multiple bug fixes and improvements

- Fix Invalid Date display in Dashboard notifications
- Fix timezone offset (8 hours) in Trading Records time display
- Fix position closing failures due to commission discrepancies (fetch actual exchange position size for reduce_only orders)
- Fix IBKR connection error 'no current event loop in thread' by ensuring asyncio event loop exists
- Fix duplicate orders on same candle by extending signal deduplication to close signals
- Add responsive design for Profile page (mobile-friendly)
- Remove unused strategy_code module and database table
- Fix LLM service to support multiple providers (OpenRouter, OpenAI, DeepSeek, Grok, Google)
- Add auto-detection of configured LLM provider based on API key availability
- Fix AI code generation to use unified LLMService with proper provider selection
- Fix crypto symbol format handling (ETH/USDT no longer becomes ETH/USDT/USDT)
- Fix Commission display showing '0E-8' in Trading Records
- Fix P&L display for signal-only trades (show '--' for unrealized P&L)
- Fix OAuth login not updating last_login_at for new users
- Add migration script for notification_settings column
- Update env.example with new LLM provider configurations
- Remove ESLint rule that was not defined in config

backend_api_python/app/config/api_keys.py

@@ -21,9 +21,53 @@ class MetaAPIKeys(type):
     
     @property
     def OPENROUTER_API_KEY(cls):
+        # Always check env var first to avoid stale cache issues
+        env_val = os.getenv('OPENROUTER_API_KEY', '').strip()
+        if env_val:
+            return env_val
         from app.utils.config_loader import load_addon_config
         val = load_addon_config().get('openrouter', {}).get('api_key')
-        return val if val else os.getenv('OPENROUTER_API_KEY', '')
+        return val if val else ''
+    
+    @property
+    def OPENAI_API_KEY(cls):
+        """OpenAI direct API key"""
+        env_val = os.getenv('OPENAI_API_KEY', '').strip()
+        if env_val:
+            return env_val
+        from app.utils.config_loader import load_addon_config
+        val = load_addon_config().get('openai', {}).get('api_key')
+        return val if val else ''
+    
+    @property
+    def GOOGLE_API_KEY(cls):
+        """Google Gemini API key"""
+        env_val = os.getenv('GOOGLE_API_KEY', '').strip()
+        if env_val:
+            return env_val
+        from app.utils.config_loader import load_addon_config
+        val = load_addon_config().get('google', {}).get('api_key')
+        return val if val else ''
+    
+    @property
+    def DEEPSEEK_API_KEY(cls):
+        """DeepSeek API key"""
+        env_val = os.getenv('DEEPSEEK_API_KEY', '').strip()
+        if env_val:
+            return env_val
+        from app.utils.config_loader import load_addon_config
+        val = load_addon_config().get('deepseek', {}).get('api_key')
+        return val if val else ''
+    
+    @property
+    def GROK_API_KEY(cls):
+        """xAI Grok API key"""
+        env_val = os.getenv('GROK_API_KEY', '').strip()
+        if env_val:
+            return env_val
+        from app.utils.config_loader import load_addon_config
+        val = load_addon_config().get('grok', {}).get('api_key')
+        return val if val else ''
 
 
 class APIKeys(metaclass=MetaAPIKeys):