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

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.24-bullseye AS builder
+FROM golang:1.24-bookworm AS builder
 
 WORKDIR /app
 
@@ -10,16 +10,24 @@ RUN go mod download
 
 COPY . .
 
+# Generate templ templates
+RUN go run github.com/a-h/templ/cmd/templ@latest generate
+
 # Build the server and the CLI tools
 RUN go build -o main_server ./cmd/server
 RUN go build -o create_user ./cmd/create-user
 
-FROM debian:bullseye-slim
+FROM debian:bookworm-slim
 
 WORKDIR /app
 
-# Required for sqlite
-RUN apt-get update && apt-get install -y ca-certificates sqlite3 && rm -rf /var/lib/apt/lists/*
+# Install ffmpeg, sqlite and ca-certificates
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    ffmpeg \
+    ca-certificates \
+    sqlite3 \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/*
 
 # Create data directory for sqlite
 RUN mkdir -p /app/data