MicropubController's catch-all handlers returned a generic 500 without
ever calling report(), so failures never reached laravel.log or Flare
(Flare is already wired up via bootstrap/app.php). Widened the final
catch to \Throwable so PHP Errors (e.g. TypeError) get the same
Micropub-shaped error response and are also reported.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>