This commit introduces a new end-to-end test script to validate the recent model refactoring changes.
The test suite performs two primary checks for a list of target objects:
- **ID Vision Compliance:** Verifies that all primary and foreign key fields are returned as string IDs, ensuring adherence to the V3 ID Vision standard.
- **Excluded Fields Stripping:** Attempts a PATCH operation with fields explicitly listed in and verifies that these fields are not updated in the database, confirming the mechanism functions as intended.
This test is essential for ensuring the stability and correctness of the API's interaction with the refactored models.
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