TEST008 - Error Handling Middleware Testing

[s223503101]

Ticket

• TEST008

Description

Added automated tests for request logging middleware and the global exception handler: success responses return 200 with X-Request-ID; forced failures return 500 with a stable JSON body (message, request_id). Aligned error responses with success by setting X-Request-ID on the exception handler’s JSONResponse. Documented scope, cases, and pytest evidence in database/Validation/TEST008-Error-Handling-Middleware-Testing.md.

Checks

• All requirements of the ticket have been implemented, or I have commented on any exclusions
• Unit tests have been added or updated for any backend changes (if applicable)
• I have reviewed the Files Changed tab and verified it only contains relevant changes (comment if unsure about any)
• This PR has been reviewed and approved

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