feat: 修复接口参数并改为form-data格式

- 添加缺失的认证参数：appId, appSecretCode, role
- 修复 analysisType 和 departmentCode 参数
- 将所有接口改为使用 Form 参数（form-data 格式）
- 更新服务层支持字典参数
- 更新所有测试代码
- 所有测试通过（7/7）

lsfx-mock-server/README.md

@@ -51,7 +51,11 @@ response = requests.post(
         "entityName": "测试企业",
         "userId": "902001",
         "userName": "902001",
-        "orgCode": "902000"
+        "appId": "remote_app",
+        "appSecretCode": "test_secret_code_12345",
+        "role": "VIEWER",
+        "orgCode": "902000",
+        "departmentCode": "902000"
     }
 )
 token_data = response.json()
@@ -102,7 +106,11 @@ response = requests.post(
         "entityName": "测试企业",
         "userId": "902001",
         "userName": "902001",
-        "orgCode": "902000"
+        "appId": "remote_app",
+        "appSecretCode": "test_secret_code_12345",
+        "role": "VIEWER",
+        "orgCode": "902000",
+        "departmentCode": "902000"
     }
 )
 # 返回: {"code": "40101", "message": "appId错误", ...}