A Google login started on the Vite dev server (:5173) always came back to the
fixed :8080 callback, because login/link/upgrade passed the static
settings.oauth_redirect_url. Derive the redirect_uri from the request origin
instead, but only in local dev and only for a known dev-host allowlist —
production still uses the fixed configured URL and never trusts the Host header
(host-injection guard). Set the Vite proxy to changeOrigin:false so it forwards
the real Host:localhost:5173 (it was rewriting it to the 127.0.0.1:8080 target).
Both callbacks must be registered in the Google console.
The dev proxy targeted 'localhost', which Node can resolve to IPv6 ::1 that the
Docker publish doesn't answer after a container recreate — every /api call failed,
spamming 'Network error'. Pin the proxy to 127.0.0.1. Also collapse bursts of
connection/5xx failures into one notification per 30s so a brief restart no longer
floods the notification center.
- Vite + React + TS + Tailwind SPA served by FastAPI (multi-stage Docker build)
- Four color schemes (Midnight default, Forest, Slate, YouTube) x dark/light,
adjustable text size; persisted to user preferences and localStorage
- Header search, grid/list toggle, theme menu; sidebar filters (show state,
sort, include Shorts/live, language + topic tag chips with any/all matching)
- Infinite-scroll feed of video cards; click opens youtube.com in a new tab;
per-video watched / saved / hidden actions with optimistic updates
- SPA fallback routing; login screen for unauthenticated users
peter