feat: run full refresh with EPG rematching

Run full live catalog refreshes through live source sync, complete channel analysis, EPG source refresh, and persisted EPG rematching while keeping check-new incremental.

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

server/services/epgMatchingService.js

@@ -58,4 +58,54 @@ function findBestMatch(database, channel, epgSources, now = Date.now()) {
     };
 }
 
-module.exports = { candidateScore, chooseBestMatch, findBestMatch, normalize };
+function rebuildPersistedEpgMatches(database, epgSources, now = Date.now()) {
+    const rows = database.prepare(`
+        SELECT p.*, l.display_name, c.name AS category_name
+        FROM playlist_items p
+        JOIN logical_channels l ON l.id = p.logical_channel_id
+        LEFT JOIN categories c ON c.source_id = p.source_id AND c.type = 'live' AND c.category_id = p.category_id
+        WHERE p.type = 'live' AND p.logical_channel_id IS NOT NULL
+        ORDER BY p.logical_channel_id, p.language_code, p.variant_rank
+    `).all();
+    const groups = new Map();
+    for (const row of rows) {
+        const languageCode = row.language_code || 'und';
+        const key = `${row.logical_channel_id}\0${languageCode}`;
+        if (!groups.has(key)) groups.set(key, {
+            logicalChannelId: row.logical_channel_id,
+            displayName: row.display_name,
+            standardName: row.display_name,
+            language: { code: languageCode },
+            variants: []
+        });
+        let data = {};
+        try { data = row.data ? JSON.parse(row.data) : {}; } catch {}
+        groups.get(key).variants.push({
+            name: row.name,
+            tvgId: data.tvgId || data.tvg_id || null,
+            epg_channel_id: data.epg_channel_id || null
+        });
+    }
+    const replace = database.prepare(`
+        INSERT INTO live_epg_matches
+            (logical_channel_id, language_code, source_id, channel_id, match_confidence, data, updated_at)
+        VALUES (?, ?, ?, ?, ?, ?, ?)
+        ON CONFLICT(logical_channel_id, language_code) DO UPDATE SET
+            source_id = excluded.source_id, channel_id = excluded.channel_id,
+            match_confidence = excluded.match_confidence, data = excluded.data,
+            updated_at = excluded.updated_at
+    `);
+    const persist = database.transaction(() => {
+        database.prepare('DELETE FROM live_epg_matches').run();
+        for (const channel of groups.values()) {
+            const match = findBestMatch(database, channel, epgSources, now);
+            replace.run(channel.logicalChannelId, channel.language.code,
+                match?.sourceId ?? null, match?.channelId ?? null,
+                match?.matchConfidence ?? 0, match ? JSON.stringify(match) : null, now);
+        }
+    });
+    persist();
+    return { matched: [...groups.values()].length };
+}
+
+module.exports = { candidateScore, chooseBestMatch, findBestMatch, normalize, rebuildPersistedEpgMatches };