fix(live): prevent analysis crash on large catalogs (#26)

Bound synchronous live channel enrichment and tolerate minimal projection payloads so analysis and listings do not blank the UI.

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

test/liveProjectionService.test.js

@@ -289,3 +289,37 @@ test('search and language filters run before expensive standard and EPG enrichme
     assert.equal(standardCalls, 1);
     assert.equal(epgCalls, 1);
 });
+
+test('full catalog listing skips synchronous per-channel enrichment', () => {
+    const db = createProjectionDb();
+    for (let index = 0; index < 500; index++) {
+        seedProjectionChannel(db, `channel-${index}`, `Channel ${index} HD`);
+    }
+    require('../server/services/liveProjectionService').rebuild(db);
+
+    let standardCalls = 0;
+    let epgCalls = 0;
+    const started = Date.now();
+    const page = getChannelPage({ languages: [], q: '', epgSources: [{ id: 99, type: 'epg', enabled: true }] }, db, {
+        iptvOrgCatalog: { findMatch: () => { standardCalls += 1; return null; } },
+        epgMatching: { findBestMatch: () => { epgCalls += 1; return null; } }
+    });
+
+    assert.equal(page.channels.length, 500);
+    assert.equal(standardCalls, 0);
+    assert.equal(epgCalls, 0);
+    assert.ok(Date.now() - started < 1000);
+});
+
+test('broad searches above the enrichment guard remain bounded', () => {
+    const db = createProjectionDb();
+    for (let index = 0; index < 300; index++) seedProjectionChannel(db, `news-${index}`, `News ${index}`);
+    require('../server/services/liveProjectionService').rebuild(db);
+    let calls = 0;
+    const page = getChannelPage({ q: 'news', epgSources: [] }, db, {
+        iptvOrgCatalog: { findMatch: () => { calls += 1; return null; } },
+        epgMatching: { findBestMatch: () => { calls += 1; return null; } }
+    });
+    assert.equal(page.channels.length, 300);
+    assert.equal(calls, 0);
+});