The request-id middleware used {{ .Request.Host }} which is not available
at config load time in the file provider. This template error blocked
the entire file provider from loading, preventing all file-based
middlewares (including grafana-ipwhitelist) from being registered.
The middleware was unused (not referenced by any router or chain) and
the backend already generates X-Request-Id via randomUUID().
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Add X-Request-Id to access log fields for request correlation
- Add request-id middleware documenting backend UUID generation
- Add X-Request-Id to CORS allowed headers
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
