feat: Add Pydantic validation to import_fail_info_bulk endpoint

- Regenerated Pydantic models from updated OpenAPI specification
- Updated import_fail_info_bulk route handler to use ImportFailInfoBulkRequest/Response models
- Replaced manual JSON validation with Pydantic model validation
- Added proper error handling with ValidationError
- Updated data_models/__init__.py to export new models

Following the process outlined in data_models/README.md for type safety and consistency.

comfyui_manager/data_models/generated_models.py

@@ -1,6 +1,6 @@
 # generated by datamodel-codegen:
 #   filename:  openapi.yaml
-#   timestamp: 2025-06-27T04:01:45+00:00
+#   timestamp: 2025-07-31T04:52:26+00:00
 
 from __future__ import annotations
 
@@ -454,6 +454,24 @@ class BatchExecutionRecord(BaseModel):
     )
 
 
+class ImportFailInfoBulkRequest(BaseModel):
+    cnr_ids: Optional[List[str]] = Field(
+        None, description="A list of CNR IDs to check."
+    )
+    urls: Optional[List[str]] = Field(
+        None, description="A list of repository URLs to check."
+    )
+
+
+class ImportFailInfoItem1(BaseModel):
+    error: Optional[str] = None
+    traceback: Optional[str] = None
+
+
+class ImportFailInfoItem(RootModel[Optional[ImportFailInfoItem1]]):
+    root: Optional[ImportFailInfoItem1]
+
+
 class QueueTaskItem(BaseModel):
     ui_id: str = Field(..., description="Unique identifier for the task")
     client_id: str = Field(..., description="Client identifier that initiated the task")
@@ -537,3 +555,7 @@ class HistoryResponse(BaseModel):
     history: Optional[Dict[str, TaskHistoryItem]] = Field(
         None, description="Map of task IDs to their history items"
     )
+
+
+class ImportFailInfoBulkResponse(RootModel[Optional[Dict[str, ImportFailInfoItem]]]):
+    root: Optional[Dict[str, ImportFailInfoItem]] = None