fix(live): keep channel search responsive (#25)

Filter projected live channels locally in the browser and apply server-side search and language filters before costly enrichment work.

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

test/liveProjectionService.test.js

@@ -3,6 +3,7 @@ const assert = require('node:assert/strict');
 const Database = require('better-sqlite3');
 const {
     normalizeChannelName,
+    getChannelPage,
     projectCatalog,
     markProjectionBuilding,
     projectionState,
@@ -55,6 +56,13 @@ function createProjectionDb() {
             is_favorite INTEGER DEFAULT 0,
             data JSON
         );
+        CREATE TABLE favorites (
+            id INTEGER PRIMARY KEY AUTOINCREMENT,
+            user_id INTEGER NOT NULL,
+            source_id INTEGER NOT NULL,
+            item_id TEXT NOT NULL,
+            item_type TEXT NOT NULL
+        );
     `);
     const { ensureColumns } = require('../server/db/liveProjectionSchema');
     ensureColumns(db, 'playlist_items', LIVE_PROJECTION_COLUMNS);
@@ -260,3 +268,24 @@ test('API serialization preserves an M3U groupTitle over the stored category fal
     assert.equal(channel.groupTitle, 'M3U Sports France');
     assert.equal(channel.variants[0].categoryName, 'M3U Sports France');
 });
+
+test('search and language filters run before expensive standard and EPG enrichment', () => {
+    const db = createProjectionDb();
+    seedProjectionChannel(db, 'bein-fr', '|FR| beIN Sports 1 HD');
+    seedProjectionChannel(db, 'bein-en', '|UK| beIN Sports 1 4K');
+    seedProjectionChannel(db, 'euro-fr', '|FR| Eurosport HD');
+    require('../server/services/liveProjectionService').rebuild(db);
+
+    let standardCalls = 0;
+    let epgCalls = 0;
+    const page = getChannelPage({ q: 'Bein Sport 1', languages: ['fr'], epgSources: [] }, db, {
+        iptvOrgCatalog: { findMatch: () => { standardCalls += 1; return null; } },
+        epgMatching: { findBestMatch: () => { epgCalls += 1; return null; } }
+    });
+
+    assert.equal(page.channels.length, 1);
+    assert.equal(page.channels[0].language.code, 'fr');
+    assert.deepEqual(page.availableLanguages.map(language => language.code).sort(), ['en', 'fr']);
+    assert.equal(standardCalls, 1);
+    assert.equal(epgCalls, 1);
+});