Sprint 002: Ingest duration & view count, FTS search, infinite scroll pagination, and transcript accordion

backend/db.py

@@ -38,11 +38,21 @@ async def init_db():
                 video_id TEXT NOT NULL,
                 user_prompt TEXT NOT NULL,
                 status TEXT DEFAULT 'pending',
+                result TEXT,
                 created_at TEXT DEFAULT CURRENT_TIMESTAMP,
                 processed_at TEXT,
                 FOREIGN KEY (video_id) REFERENCES videos(video_id)
             )
         """)
+        # Migration: Add result column if it doesn't exist (since the DB might already exist)
+        try:
+            async with db.execute("PRAGMA table_info(agent_queue)") as cursor:
+                columns = [row[1] for row in await cursor.fetchall()]
+                if "result" not in columns:
+                    await db.execute("ALTER TABLE agent_queue ADD COLUMN result TEXT")
+        except Exception as e:
+            # Table might not exist yet if not created, but CREATE TABLE IF NOT EXISTS handles it
+            pass
         # FTS5 virtual table for full-text search on title + summary
         await db.execute("""
             CREATE VIRTUAL TABLE IF NOT EXISTS videos_fts USING fts5(