[Test Coverage] Add tests for middleware layer

[djimit]

Auto-Generated Issue

Category: test-coverage
Severity: low
Generated by: DjimFlo Self-Analysis Bridge

Description

Middleware layer has no test coverage:

• middleware/auth.ts (238 connections — critical!)
• middleware/error-handler.ts
• middleware/rate-limiter.ts
• middleware/security-headers.ts
• middleware/request-logger.ts

Recommended Action

Add integration tests for each middleware:

• Auth: token validation, permission checks, disabled users
• Error handler: error mapping, status codes
• Rate limiter: throttle, burst, reset
• Security headers: CSP, HSTS, X-Frame-Options

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Auto-generated by DjimFlo Self-Analysis Bridge.