feat: intégration du panneau super-admin (clés API/SMTP), recherche web native OpenRouter, cookie étendu (8h), toast notification et reset textarea

backend/schemas.py

@@ -20,6 +20,26 @@ class AdminCreate(BaseModel):
     cloudflare_api_token: Optional[str] = None
     huggingface_api_key: Optional[str] = None
 
+class SystemSettingsBase(BaseModel):
+    smtp_host: Optional[str] = None
+    smtp_port: Optional[int] = None
+    smtp_user: Optional[str] = None
+    smtp_password: Optional[str] = None
+    openrouter_api_key: Optional[str] = None
+    openrouter_management_key: Optional[str] = None
+    groq_api_key: Optional[str] = None
+    gemini_api_key: Optional[str] = None
+    deepseek_api_key: Optional[str] = None
+    mistral_api_key: Optional[str] = None
+    cloudflare_account_id: Optional[str] = None
+    cloudflare_api_token: Optional[str] = None
+    huggingface_api_key: Optional[str] = None
+
+class SystemSettingsUpdate(SystemSettingsBase): pass
+
+class SystemSettingsResponse(SystemSettingsBase):
+    class Config: from_attributes = True
+
 class LoginRequest(BaseModel):
     username: str
     password: str