Add library favourite buttons and fix remote favourites list (#14)

* Add favourite buttons to library list and series detail pages

Co-authored-by: truewhile <truewhile@users.noreply.github.com>

* Fix favourites list for remote Emby mounted media

Co-authored-by: truewhile <truewhile@users.noreply.github.com>

* Route favourites to library series detail when appropriate

Co-authored-by: truewhile <truewhile@users.noreply.github.com>

* Fix favourites link to library series for remote anime paths

Co-authored-by: truewhile <truewhile@users.noreply.github.com>

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Co-authored-by: Cursor Agent <cursoragent@cursor.com>
Co-authored-by: truewhile <truewhile@users.noreply.github.com>

web/src/pages/FavouritesPage.tsx

@@ -4,6 +4,7 @@ import toast from 'react-hot-toast'
 import { playbackAPI } from '../api/playback'
 import { MediaCard } from '../components/MediaCard'
 import type { Media } from '../types'
+import { favouriteMediaLink } from '../utils/mediaNavigation'
 
 export function FavouritesPage() {
   const [items, setItems] = useState<Media[]>([])
@@ -66,7 +67,7 @@ export function FavouritesPage() {
         <div className="glass-panel flex flex-col items-center gap-3 p-10 text-center">
           <p className="text-lg text-ink-100">还没有任何收藏</p>
           <p className="text-sm text-sand-500">
-            点击媒体详情页的「收藏」按钮添加喜欢的内容
+            在媒体库或详情页点击「加入收藏」即可添加喜欢的内容
           </p>
         </div>
       )}
@@ -74,7 +75,7 @@ export function FavouritesPage() {
       {items.length > 0 && (
         <div className="grid grid-cols-2 gap-4 sm:grid-cols-3 md:grid-cols-4 lg:grid-cols-5 xl:grid-cols-6">
           {items.map((m) => (
-            <MediaCard key={m.id} media={m} />
+            <MediaCard key={m.id} media={m} linkTo={favouriteMediaLink(m)} />
           ))}
         </div>
       )}

web/src/pages/MediaDetailPageModel.ts

@@ -1,14 +1,13 @@
 import type { Media } from '../types'
-import { getSeriesKey, isEpisodeLike } from '../utils/groupSeries'
+import { mediaLibraryTarget } from '../utils/mediaNavigation'
 
 export function mediaLibraryBackTarget(media: Media): string {
+  const seriesTarget = mediaLibraryTarget(media)
+  if (seriesTarget) return seriesTarget
+
   const libraryID = media.display_library_id || media.library_id
   if (!libraryID) return ''
-  if (!isEpisodeLike(media)) return `/library/${encodeURIComponent(libraryID)}`
-
-  const seriesKey = getSeriesKey(media)
-  const target = `/library/${encodeURIComponent(libraryID)}`
-  return seriesKey ? `${target}?series=${encodeURIComponent(seriesKey)}` : target
+  return `/library/${encodeURIComponent(libraryID)}`
 }
 
 export function mediaDetailScrapeMediaType(media: Media): string | undefined {