feat: add real swipe playback and episode selection

src/pages/WatchPage.jsx

@@ -1,5 +1,6 @@
 // Author: fruit.com.cn
 import { useParams } from 'react-router-dom';
+import { useState } from 'react';
 import { videos } from '../data/catalog';
 import { MediaCard } from '../components/MediaCard';
 import { useAppStore } from '../app/store';
@@ -9,4 +10,4 @@ import { useApi } from '../hooks/useApi';
 import { VideoPlayer } from '../components/player/VideoPlayer';
 import { resolvePlaybackUrl } from '../services/normalizers';
 
-export function WatchPage() { const { id } = useParams(); const { locale } = useAppStore(); const fallback = videos.find((item) => item.id === id) || videos[0]; const drama = useApi(() => appApi.drama(id).then((data) => normalizeDrama(data, locale.code)), [id, locale.code]); const video = drama.data || fallback; const episode = video.episodes?.[0]; const playback = useApi(() => episode?.id ? appApi.episodePlay(episode.id) : Promise.resolve(null), [episode?.id]); const signedUrl = resolvePlaybackUrl(playback.data?.playUrl || playback.data?.url || playback.data?.signedUrl); return <div className="watch-layout"><div><div className="player">{signedUrl ? <VideoPlayer src={signedUrl} poster={video.image} /> : <><img src={video.image?.startsWith('/') ? video.image : `/assets/${video.image}`} alt={video.title} /><div className="player-state">{playback.loading ? locale.loading : locale.playbackUnavailable}</div></>}</div><h1 className="watch-title">{video.title}</h1><p className="watch-subtitle">{video.channel} · {video.views}</p>{playback.error && <div className="api-note warning">{playback.error}</div>}</div><aside className="up-next"><h2>{locale.picks}</h2>{videos.slice(0, 4).map((item) => <MediaCard key={item.id} video={item} />)}</aside></div>; }
+export function WatchPage() { const { id } = useParams(); const { locale } = useAppStore(); const fallback = videos.find((item) => item.id === id) || videos[0]; const drama = useApi(() => appApi.drama(id).then((data) => normalizeDrama(data, locale.code)), [id, locale.code]); const video = drama.data || fallback; const [selectedEpisodeId, setSelectedEpisodeId] = useState(null); const episode = video.episodes?.find((item) => String(item.id) === String(selectedEpisodeId)) || video.episodes?.[0]; const playback = useApi(() => episode?.id ? appApi.episodePlay(episode.id) : Promise.resolve(null), [episode?.id]); const signedUrl = resolvePlaybackUrl(playback.data?.playUrl); const image = video.image?.startsWith('/') || video.image?.startsWith('http') ? video.image : `/assets/${video.image}`; return <div className="watch-layout"><div><div className="player">{signedUrl ? <VideoPlayer src={signedUrl} poster={image} /> : <><img src={image} alt={video.title} /><div className="player-state">{playback.loading ? locale.loading : playback.error || locale.playbackUnavailable}</div></>}</div><h1 className="watch-title">{video.title}</h1><p className="watch-subtitle">{video.channel} · {video.views}</p><section className="episode-picker"><div className="episode-picker-heading"><h2>{locale.episodes || 'Episodes'}</h2><span>{video.episodes?.length || 0}</span></div><div className="episode-grid">{(video.episodes || []).map((item) => <button key={item.id} className={`episode-button ${String(item.id) === String(episode?.id) ? 'active' : ''} ${item.locked ? 'locked' : ''}`} onClick={() => setSelectedEpisodeId(item.id)}><b>{item.number}</b><span>{item.title || `Episode ${item.number}`}</span>{item.locked && <small>🔒</small>}</button>)}</div></section></div><aside className="up-next"><h2>{locale.picks}</h2>{videos.slice(0, 4).map((item) => <MediaCard key={item.id} video={item} />)}</aside></div>; }