Fix quality_score column missing from leads table

lead_gen_pro/l3_execution/database_doe.py

@@ -82,6 +82,7 @@ def init_db() -> None:
             whatsapp_sent BOOLEAN DEFAULT 0,
             whatsapp_sent_at TIMESTAMP,
             whatsapp_link TEXT,
+            quality_score INTEGER DEFAULT 0,
             email_sent BOOLEAN DEFAULT 0,
             email_sent_at TIMESTAMP,
             replied BOOLEAN DEFAULT 0,
@@ -141,6 +142,15 @@ def init_db() -> None:
         )
     """)
     
+    # Migrations
+    cursor.execute("PRAGMA table_info(leads)")
+    columns = [col[1] for col in cursor.fetchall()]
+    if 'quality_score' not in columns:
+        try:
+            cursor.execute("ALTER TABLE leads ADD COLUMN quality_score INTEGER DEFAULT 0")
+        except Exception as e:
+            print(f"[DB] Migration error (quality_score): {e}")
+
     # Create indexes
     cursor.execute("CREATE INDEX IF NOT EXISTS idx_leads_status ON leads(status)")
     cursor.execute("CREATE INDEX IF NOT EXISTS idx_leads_niche ON leads(niche)")