CLAUDE TESTING: Missing input validation

[yijint]

Backend accepts requests with invalid data that should be rejected with 400-level errors.

Examples:

1. https://github.com/WildMeOrg/wildbook-ia/blob/api/api_docs/schemathesis/logs/api_claude.txt#L4799: PUT /api/annot/tags/json/ - Accepts request with x-schemathesis-unknown-property: 42 when additionalProperties: false. Returns 200 OK instead of 400.
2. https://github.com/WildMeOrg/wildbook-ia/blob/api/api_docs/schemathesis/logs/api_claude.txt#L5062: GET /api/image/feature/json/{uuid}/ - Accepts path parameter uuid=0 which doesn't match UUID format. Returns 200 OK with nested error message instead of 400.

This issue was detected by running schemathesis on a Claude-generated API.

• Claude-generated API: https://github.com/WildMeOrg/wildbook-ia/blob/api/api_docs/openapi/api_claude.yaml
• schemathesis test logs: https://github.com/WildMeOrg/wildbook-ia/blob/api/api_docs/schemathesis/logs/api_claude.txt
• Claude-generated summary of issues: https://github.com/WildMeOrg/wildbook-ia/blob/api/api_docs/schemathesis/summaries/api_claude.md