Update

schema.sql

@@ -42,9 +42,22 @@ CREATE TABLE IF NOT EXISTS processed_feed_items (
   PRIMARY KEY(feed_url, item_id)
 );
 
+-- TTS generation retry queue
+CREATE TABLE IF NOT EXISTS tts_queue (
+  id TEXT PRIMARY KEY,
+  item_id TEXT NOT NULL,
+  script_text TEXT NOT NULL,
+  retry_count INTEGER DEFAULT 0,
+  created_at TEXT NOT NULL,
+  last_attempted_at TEXT,
+  status TEXT DEFAULT 'pending' CHECK (status IN ('pending', 'processing', 'failed'))
+);
+
 -- Create indexes for better performance
 CREATE INDEX IF NOT EXISTS idx_articles_feed_id ON articles(feed_id);
 CREATE INDEX IF NOT EXISTS idx_articles_pub_date ON articles(pub_date);
 CREATE INDEX IF NOT EXISTS idx_articles_processed ON articles(processed);
 CREATE INDEX IF NOT EXISTS idx_episodes_article_id ON episodes(article_id);
 CREATE INDEX IF NOT EXISTS idx_feeds_active ON feeds(active);
+CREATE INDEX IF NOT EXISTS idx_tts_queue_status ON tts_queue(status);
+CREATE INDEX IF NOT EXISTS idx_tts_queue_created_at ON tts_queue(created_at);