`app.get('/api/deezer/*', …)` — a bare "*" — throws "Missing parameter name" in
Express 5's path-to-regexp at startup, so the server never came up and EVERY endpoint
(abs-proxy, romaji-overrides, deezer, …) failed with a CORS/ERR_FAILED in the browser.
Use a RegExp route instead, which registers cleanly on both Express 4 and 5. Verified
against express 5.2.1: bare "*" crashes, the regex is OK.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>