chore(fam-edge): gemini 模型链每个模型请求前打印当前超时（确认 ×2 对 flash/flash-lite 均生效）

fam-edge/src/fam_edge/model_adapters/gemini_adapter.py

@@ -225,6 +225,8 @@ class GeminiAdapter(BaseModelAdapter):
         ]
         for model in self.model_chain:
             for attempt in range(2):
+                if attempt == 0:
+                    logger.info(f"Gemini [{model}] 本轮请求超时 {self.timeout}s")
                 try:
                     resp = requests.post(
                         f"{self._base_url}/models/{model}:generateContent?key={self.api_key}",