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/anime.templ

@@ -56,6 +56,14 @@ templ AnimeDetails(anime jikan.Anime, currentStatus string) {
 						<span>loading relations</span>
 					</div>
 				</section>
+				<section class="anime-episodes" hx-get={ string(templ.URL(fmt.Sprintf("/api/anime/%d/episodes", anime.MalID))) } hx-trigger="load">
+					<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>
 			</div>
 			<aside class="anime-sidebar">
 				if anime.TitleJapanese != "" {