fix: increase Ollama health check timeout to prevent false offline status

services/ollama_service.py

@@ -56,8 +56,8 @@ class OllamaService:
             return OllamaService._connection_cache['status']
 
         try:
-            # V-Opt: 縮短超時時間從 10 秒改為 3 秒
-            response = requests.get(f"{self.host}/api/tags", timeout=3)
+            # V-Opt: 增加超時時間避免 Ollama 負載高時誤判為離線
+            response = requests.get(f"{self.host}/api/tags", timeout=10)
             if response.status_code == 200:
                 data = response.json()
                 self.available_models = [m['name'] for m in data.get('models', [])]