pipeline card: checkboxes over actual audio streams, not a language dropdown

The dropdown showed every language known to LANG_NAMES — not useful
because you can only keep streams that actually exist on the file. The
right tool is checkboxes, one per track, pre-checked per analyzer
decisions.

- /api/review/pipeline now returns audio_streams[] per review item
  with id, language, codec, channels, title, is_default, and the
  current keep/remove action
- PipelineCard renders one line per audio track: checkbox (bound to
  PATCH /:id/stream/:streamId), language, codec·channels, default
  badge, title, and '(Original Language)' when the stream's normalized
  language matches the item's OG (which itself comes from
  radarr/sonarr/jellyfin via the scan flow)
- ReviewColumn + SeriesCard swap onLanguageChange → onToggleStream
- new shared normalizeLanguageClient mirrors the server's normalize so
  en/eng compare equal on the client

server/api/review.ts

@@ -252,6 +252,16 @@ function recomputePlanAfterToggle(db: ReturnType<typeof getDb>, itemId: number):
 
 // ─── Pipeline: summary ───────────────────────────────────────────────────────
 
+interface PipelineAudioStream {
+	id: number;
+	language: string | null;
+	codec: string | null;
+	channels: number | null;
+	title: string | null;
+	is_default: number;
+	action: "keep" | "remove";
+}
+
 app.get("/pipeline", (c) => {
 	const db = getDb();
 	const jellyfinUrl = getConfig("jellyfin_url") ?? "";
@@ -348,6 +358,50 @@ app.get("/pipeline", (c) => {
 		item.transcode_reasons = reasonsByPlan.get(item.id) ?? [];
 	}
 
+	// Batch-load audio streams + their current decisions so each card can
+	// render pre-checked checkboxes without an extra fetch. Only audio
+	// streams (video/subtitle aren't user-toggleable from the card).
+	const itemIds = (review as { item_id: number }[]).map((r) => r.item_id);
+	const streamsByItem = new Map<number, PipelineAudioStream[]>();
+	if (itemIds.length > 0) {
+		const placeholders = itemIds.map(() => "?").join(",");
+		const streamRows = db
+			.prepare(`
+			SELECT ms.id, ms.item_id, ms.language, ms.codec, ms.channels, ms.title,
+				ms.is_default, sd.action
+			FROM media_streams ms
+			JOIN review_plans rp ON rp.item_id = ms.item_id
+			LEFT JOIN stream_decisions sd ON sd.plan_id = rp.id AND sd.stream_id = ms.id
+			WHERE ms.item_id IN (${placeholders}) AND ms.type = 'Audio'
+			ORDER BY ms.item_id, ms.stream_index
+		`)
+			.all(...itemIds) as {
+			id: number;
+			item_id: number;
+			language: string | null;
+			codec: string | null;
+			channels: number | null;
+			title: string | null;
+			is_default: number;
+			action: "keep" | "remove" | null;
+		}[];
+		for (const r of streamRows) {
+			if (!streamsByItem.has(r.item_id)) streamsByItem.set(r.item_id, []);
+			streamsByItem.get(r.item_id)!.push({
+				id: r.id,
+				language: r.language,
+				codec: r.codec,
+				channels: r.channels,
+				title: r.title,
+				is_default: r.is_default,
+				action: r.action ?? "keep",
+			});
+		}
+	}
+	for (const item of review as { item_id: number; audio_streams?: PipelineAudioStream[] }[]) {
+		item.audio_streams = streamsByItem.get(item.item_id) ?? [];
+	}
+
 	return c.json({ review, reviewTotal, queued, processing, done, doneCount, jellyfinUrl });
 });