refactor: remove marshal_with and inline api.model from app_import

[ai-hpc]

Part of #28015

Summary

Remove @marshal_with decorators and inline console_ns.model() definitions from app_import.py. The endpoints already serialize responses via Pydantic's .model_dump(mode="json"), making @marshal_with redundant. Use register_schema_models() instead of manual schema_model() for Swagger registration. Remove unused fields, marshal_with, and app_fields imports.

Checklist

• This change requires a documentation update, included: Dify Document
• I understand that this PR may be closed in case there was no previous discussion or issues. (This doesn't apply to typos!)
• I've added a test for each change that was introduced, and I tried as much as possible to make a single atomic change.
• I've updated the documentation accordingly.
• I ran make lint and make type-check (backend) and cd web && pnpm exec vp staged (frontend) to appease the lint gods

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[Copilot]

Pull request overview

Refactors the console app import controller to rely on Pydantic JSON serialization and centralized schema registration, removing legacy Flask-RESTX marshalling and inline Swagger model definitions.

Changes:

• Removed @marshal_with usage and associated Flask-RESTX fields/app_fields model wiring from app_import.py.
• Switched Swagger schema registration for the request payload to register_schema_models().
• Cleaned up unused imports related to marshalling and field-based models.

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[github-actions]

Pyrefly Diff

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