feat(favicon): per-feed icon from the last sender's domain

Resolve each feed's most recent sender domain and serve its favicon at
GET /favicon/:feedId, falling back to the project icon. Icons are fetched
in the background on ingestion (direct /favicon.ico then a DuckDuckGo
fallback), cached base64 in KV keyed by domain with a 1-week TTL so the
fetch only fires when absent. Exposed via RSS <image> / Atom <icon>/<logo>
and rendered in the admin feed list, plus a landing-page feature card.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
This commit is contained in:
Julien Herr
2026-05-23 14:05:14 +02:00
parent d299c8891d
commit eb12f21894
19 changed files with 592 additions and 30 deletions
+9
View File
@@ -24,3 +24,12 @@ export const FEEDS_LIST_KEY = "feeds:list";
/** KV key for the monitoring counters singleton. */
export const STATS_KEY = "stats:counters";
/** Default TTL for a cached per-domain favicon (seconds). */
export const ICON_TTL_SECONDS = 7 * 24 * 60 * 60; // 1 week
/** Maximum accepted favicon size (bytes); larger responses are rejected. */
export const MAX_ICON_BYTES = 100 * 1024; // 100 KB
/** Timeout for an outbound favicon fetch (milliseconds). */
export const ICON_FETCH_TIMEOUT_MS = 5000;