Remember unavailable movies and auto-grab them later (wishlist)

When Smart Search finds no good copy of a movie (unreleased / only CAMs), we
now record it instead of dropping it:
- New Wanted model + migration (dedup by tmdbId, status wanted|fulfilled).
- POST /__api/search/releases remembers a movie when it returns no options,
  and the UI confirms it was added to the wishlist.
- controller/wantedWatcher re-runs Smart Search for wishlisted items every 6h
  (and on boot); when a good copy appears it queues the recommended release,
  which then flows through the normal download + organize pipeline, and marks
  the item fulfilled.
- GET/DELETE /__api/search/wanted to view/remove the wishlist.

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

controller/wantedWatcher.js

@@ -0,0 +1,47 @@
+'use strict';
+
+const conf = require('>/conf');
+const search = require('>/controller/search');
+
+let lock = false;
+
+// Periodically re-run Smart Search for wishlisted movies; when a good copy finally
+// appears, queue it( which then flows through the normal download + organize pipeline).
+async function tick(){
+	if(lock) return;
+	lock = true;
+	try{
+		const { Wanted, Torrent } = require('>/models');
+
+		let wanted = await Wanted.findAll({ where: { status: 'wanted' } });
+		for(let w of wanted){
+			if(!w.requestedBy) continue;
+			try{
+				let result = await search.findReleases(w.tmdbId, w.mediaType);
+				let pick = result.options.find(o => o.role === 'recommended' && !o.alreadyOwned)
+					|| result.options.find(o => !o.alreadyOwned);
+				if(!pick) continue;
+
+				await Torrent.create({
+					magnetLink: pick.magnetLink,
+					isPrivate: false,
+					added_by: w.requestedBy,
+					category: pick.category,
+				});
+				w.status = 'fulfilled';
+				await w.save();
+			}catch(error){
+				// leave it wanted; try again next tick
+			}
+		}
+	}catch(error){
+		// DB/Transmission transient — retry next tick
+	}finally{
+		lock = false;
+	}
+}
+
+setInterval(tick, conf.wanted.interval || 6 * 60 * 60 * 1000);
+tick(); // check once on boot
+
+module.exports = { tick };