feat: full format compatibility adaptation for model downloads

- Add get_model_urls() and download_model() to api.py and api_complete.py
  supporting all 14 discovered urlResult format keys (glb, obj, pbr maps, etc.)
- Update generator.py to extract full urlResult dict instead of just modelUrl
- Add CLI subcommands: formats (list available formats) and download (fetch by key)
- Update reverse engineering docs with complete format key table and CLI examples

hunyuan3dweb/browser/generator.py

@@ -68,7 +68,7 @@ def generate_3d(image_path, wait_for_complete=False, timeout=300):
         page = context.new_page()
 
         # 用于存储结果
-        result = {"creationsId": None, "status": None, "modelUrl": None}
+        result = {"creationsId": None, "status": None, "urlResult": {}}
 
         # 监听响应
         def handle_response(response):
@@ -79,7 +79,7 @@ def generate_3d(image_path, wait_for_complete=False, timeout=300):
                     if "creationsId" in body:
                         result["creationsId"] = body["creationsId"]
                         print(f"✅ 生成已触发，creationsId: {body['creationsId']}")
-                except:
+                except Exception:
                     pass
             elif "creations/detail" in url and response.status == 200:
                 try:
@@ -87,9 +87,13 @@ def generate_3d(image_path, wait_for_complete=False, timeout=300):
                     result["status"] = body.get("status")
                     if "result" in body and isinstance(body["result"], list) and len(body["result"]) > 0:
                         model_data = body["result"][0]
-                        if "modelUrl" in model_data:
-                            result["modelUrl"] = model_data["modelUrl"]
-                except:
+                        url_result = model_data.get("urlResult", {})
+                        if url_result:
+                            result["urlResult"] = {
+                                k: v for k, v in url_result.items()
+                                if v not in (None, "", {})
+                            }
+                except Exception:
                     pass
 
         page.on("response", handle_response)
@@ -147,12 +151,16 @@ def generate_3d(image_path, wait_for_complete=False, timeout=300):
                     last_status = status
 
                 if status == "success":
-                    # 提取模型URL
+                    # 提取所有可用格式URL
                     if "result" in status_result and len(status_result["result"]) > 0:
                         model_data = status_result["result"][0]
-                        result["modelUrl"] = model_data.get("modelUrl")
-                        result["previewUrl"] = model_data.get("previewUrl")
-                    print(f"\n✅ 生成完成！")
+                        url_result = model_data.get("urlResult", {})
+                        if url_result:
+                            result["urlResult"] = {
+                                k: v for k, v in url_result.items()
+                                if v not in (None, "", {})
+                            }
+                    print(f"\n✅ 生成完成！可用格式: {', '.join(result['urlResult'].keys())}")
                     break
                 elif status == "fail":
                     print(f"\n❌ 生成失败")