feat(anime): add anime browser powered by Aniyomi extensions

- Add `subminer anime` / `--anime` and a tray entry to open a browser that searches installed Aniyomi extension sources, shows cover art and episodes, and plays into mpv with overlay/mining attached
- Add an Extensions tab to add repos and install/update/remove sources, and per-source settings for sources needing config
- Support searching all sources at once with streaming, per-source results and status
- Prefer Japanese audio/subtitle tracks from the source and keep the primary subtitle slot reserved for Japanese
- Fix window/tray/Dock handling so the browser and mpv can be switched between without quitting the app or losing the Dock icon
- Add anime.repos, anime.extensionsDir, anime.preferredQuality config keys (no bundled repos or discovery)

src/anime-bridge/media-url.ts

@@ -0,0 +1,74 @@
+/**
+ * The bridge returns cover art and video URLs pointing at its own loopback
+ * media proxy, but the origin it embeds is not always the port we actually
+ * started it on. Rebase those onto the live bridge origin, and leave any
+ * genuinely remote URL untouched.
+ */
+
+const PROXY_ROUTES = new Set(['image', 'video']);
+const LOOPBACK_HOSTS = new Set(['127.0.0.1', 'localhost', '::1', '[::1]']);
+
+function isLoopbackProxyUrl(candidate: URL): boolean {
+  if (candidate.protocol !== 'http:' && candidate.protocol !== 'https:') return false;
+  const host = candidate.hostname.toLowerCase();
+  if (!LOOPBACK_HOSTS.has(host)) return false;
+  const route = candidate.pathname.split('/').filter(Boolean)[0];
+  return route !== undefined && PROXY_ROUTES.has(route);
+}
+
+/**
+ * Rewrite a bridge media URL onto `bridgeBaseUrl`, preserving path and query.
+ * Returns the input unchanged when it is not a loopback proxy URL, or when
+ * either URL cannot be parsed.
+ */
+export function resolveBridgeMediaUrl(bridgeBaseUrl: string, mediaUrl: string): string {
+  let media: URL;
+  try {
+    media = new URL(mediaUrl);
+  } catch {
+    return mediaUrl;
+  }
+  if (!isLoopbackProxyUrl(media)) return mediaUrl;
+
+  const normalizedBase = bridgeBaseUrl.includes('://') ? bridgeBaseUrl : `http://${bridgeBaseUrl}`;
+  let base: URL;
+  try {
+    base = new URL(normalizedBase);
+  } catch {
+    return mediaUrl;
+  }
+  if (base.protocol !== 'http:' && base.protocol !== 'https:') return mediaUrl;
+  if (base.hostname.length === 0) return mediaUrl;
+
+  const rebased = new URL(base.origin);
+  rebased.pathname = media.pathname;
+  rebased.search = media.search;
+  rebased.hash = media.hash;
+  return rebased.toString();
+}
+
+/** Aniyomi's SAnime status constants. */
+export type AnimeStatus =
+  | 'unknown'
+  | 'ongoing'
+  | 'completed'
+  | 'publishing-finished'
+  | 'cancelled'
+  | 'on-hiatus';
+
+export function parseAnimeStatus(status: number | undefined): AnimeStatus {
+  switch (status) {
+    case 1:
+      return 'ongoing';
+    case 2:
+      return 'completed';
+    case 4:
+      return 'publishing-finished';
+    case 5:
+      return 'cancelled';
+    case 6:
+      return 'on-hiatus';
+    default:
+      return 'unknown';
+  }
+}