fix(fam-edge): 整视频上传方式修正 - Gemini 改 resumable 可续传协议(370MB 不再 raw 单发超时)；NVIDIA 改 Assets API 上传拿 asset_id(video_url 引用)，规避 25MB payload 上限

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

@@ -122,24 +122,52 @@ class GeminiAdapter(BaseModelAdapter):
             self._delete_file(file_uri)
 
     def _upload_file(self, video_path: str) -> Optional[str]:
-        """用 Files API 上传完整视频，返回可引用 URI。"""
+        """用 Files API resumable 可续传协议上传完整视频，返回可引用 URI。"""
         name = os.path.basename(video_path)
-        upload_url = f"{self._base_url}/files?key={self.api_key}"
+        size = os.path.getsize(video_path)
+        upload_timeout = max(self.timeout, 900)
+        base = f"{self._base_url}/files?key={self.api_key}"
+        # 1) 创建可续传上传会话
+        try:
+            r0 = requests.post(
+                base,
+                headers={
+                    "X-Goog-Upload-Protocol": "resumable",
+                    "X-Goog-Upload-Command": "start",
+                    "X-Goog-Upload-Header-Content-Length": str(size),
+                    "X-Goog-Upload-Header-Content-Type": "video/mp4",
+                    "X-Goog-Upload-File-Name": name,
+                    "Content-Type": "application/json",
+                },
+                json={"file": {"display_name": name}},
+                timeout=60,
+            )
+        except Exception as e:
+            logger.error(f"Gemini 创建上传会话异常: {e}")
+            return None
+        if r0.status_code not in (200, 201):
+            logger.warning(f"Gemini 创建上传会话失败 HTTP {r0.status_code}: {r0.text[:200]}")
+            return None
+        session_url = r0.headers.get('X-Goog-Upload-URL')
+        if not session_url:
+            logger.warning("Gemini 上传响应缺少 X-Goog-Upload-URL")
+            return None
+        # 2) 上传文件体（流式）
         try:
             with open(video_path, 'rb') as f:
-                data = f.read()
-        except OSError as e:
-            logger.error(f"读取视频失败 {video_path}: {e}")
-            return None
-        headers = {
-            "X-Goog-Upload-Protocol": "raw",
-            "X-Goog-Upload-File-Name": name,
-            "Content-Type": "video/mp4",
-        }
-        try:
-            resp = requests.post(upload_url, headers=headers, data=data, timeout=300)
+                resp = requests.post(
+                    session_url,
+                    headers={
+                        "Content-Length": str(size),
+                        "X-Goog-Upload-Command": "upload, finalize",
+                        "X-Goog-Upload-Offset": "0",
+                        "Content-Type": "video/mp4",
+                    },
+                    data=f,
+                    timeout=upload_timeout,
+                )
         except requests.Timeout:
-            logger.warning("Gemini 文件上传超时 (300s)")
+            logger.warning(f"Gemini 文件上传超时 ({upload_timeout}s)")
             return None
         except Exception as e:
             logger.error(f"Gemini 文件上传异常: {e}")