feat: torrent streaming with hls transcoding (#1)

* feat: add ffmpeg for hls streaming

* feat: torrent streaming with hls transcoding

- add nyaa.si torrent search client
- add streaming service using anacrolix/torrent
- add hls transcoding via ffmpeg for browser playback
- add watch page with episode selection
- add socks5 proxy support via TORRENT_PROXY env
- switch to modernc.org/sqlite (pure go, no cgo conflicts)
- update dockerfile with ffmpeg

internal/templates/episodes.templ

@@ -0,0 +1,72 @@
+package templates
+
+import "mal/internal/jikan"
+import "fmt"
+
+// EpisodesList renders a list of episodes for an anime
+templ EpisodesList(animeID int, animeTitle string, episodes []jikan.Episode, totalEpisodes int) {
+	<section class="episodes-section">
+		<div class="episodes-header">
+			<h3>episodes</h3>
+			if totalEpisodes > 0 {
+				<span class="episode-count">{ fmt.Sprintf("%d episodes", totalEpisodes) }</span>
+			}
+		</div>
+		if len(episodes) == 0 {
+			<p class="no-episodes">no episode data available</p>
+		} else {
+			<div class="episodes-grid">
+				for _, ep := range episodes {
+					@EpisodeCard(animeID, animeTitle, ep)
+				}
+			</div>
+		}
+	</section>
+}
+
+// EpisodeCard renders a single episode card with play button
+templ EpisodeCard(animeID int, animeTitle string, ep jikan.Episode) {
+	<div class="episode-card" data-episode={ fmt.Sprintf("%d", ep.MalID) }>
+		<div class="episode-number">{ fmt.Sprintf("%d", ep.MalID) }</div>
+		<div class="episode-info">
+			<div class="episode-title">
+				if ep.Title != "" {
+					{ ep.Title }
+				} else {
+					{ fmt.Sprintf("Episode %d", ep.MalID) }
+				}
+			</div>
+			if ep.Filler {
+				<span class="episode-tag filler">filler</span>
+			}
+			if ep.Recap {
+				<span class="episode-tag recap">recap</span>
+			}
+		</div>
+		<button 
+			class="episode-play"
+			hx-get={ string(templ.URL(fmt.Sprintf("/watch/%d/%d", animeID, ep.MalID))) }
+			hx-target="body"
+			hx-push-url="true"
+		>
+			<svg viewBox="0 0 24 24" fill="currentColor" class="play-icon">
+				<path d="M8 5v14l11-7z"/>
+			</svg>
+		</button>
+	</div>
+}
+
+// EpisodesLoading renders a loading state for episodes
+templ EpisodesLoading() {
+	<section class="episodes-section">
+		<div class="episodes-header">
+			<h3>episodes</h3>
+		</div>
+		<div class="loading-indicator">
+			<div class="loading-dot"></div>
+			<div class="loading-dot"></div>
+			<div class="loading-dot"></div>
+			<span>loading episodes</span>
+		</div>
+	</section>
+}