Make Smart Search library-aware (Emby dedup + TV gap-fill)

New controller/library.js queries Emby by TMDB provider id (resilient: an
unreachable Emby degrades to "unknown" so search still works).

Movies — quality-aware dedup:
- findReleases checks movieInLibrary(tmdbId) and flags each option alreadyOwned
  when its resolution is <= what you already own, so only genuine upgrades are
  offered; the release picker greys owned qualities and shows a library banner.

TV — library-driven "fill the gaps":
- GET /__api/search/seasons compares Emby's episode inventory against TMDB's
  per-season episode counts to mark each season complete/partial/missing.
- POST /__api/search/fill picks the best complete-season pack (LLM) for every
  missing/incomplete season and queues them. Front-end routes TV titles to a
  season plan + "Fill all gaps" instead of the movie release list.

Adds tmdb.tmdbSeasons; shared tmdb module import in search.js.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

routes/search.js

@@ -2,6 +2,7 @@
 
 const router = require('express').Router();
 const search = require('>/controller/search');
+const { Torrent } = require('>/models');
 
 // Step 1: fuzzy query -> a few TMDB title candidates( with posters) to confirm.
 router.get('/title', async function(req, res, next){
@@ -21,4 +22,37 @@ router.post('/releases', async function(req, res, next){
 	}
 });
 
+// TV: which seasons you have vs are missing (Emby inventory vs TMDB counts).
+router.get('/seasons', async function(req, res, next){
+	try{
+		res.json(await search.seasonPlan(req.query.tmdbId));
+	}catch(error){
+		next(error);
+	}
+});
+
+// TV: queue the best complete-season pack for every missing/incomplete season.
+router.post('/fill', async function(req, res, next){
+	try{
+		let plan = await search.fillMissing(req.body.tmdbId);
+		let queued = [];
+		for(let pick of plan.picks){
+			try{
+				await Torrent.create({
+					magnetLink: pick.magnetLink,
+					isPrivate: false,
+					added_by: req.user.username,
+					category: pick.category,
+				});
+				queued.push({ season: pick.season, name: pick.name });
+			}catch(error){
+				plan.skipped.push({ season: pick.season, reason: error.message });
+			}
+		}
+		res.json({ title: plan.title, year: plan.year, queued, skipped: plan.skipped });
+	}catch(error){
+		next(error);
+	}
+});
+
 module.exports = router;