fix: Add missing columns to daily_workflow_plans table

- Added generation_mode column (VARCHAR, default: 'llm_generation')
- Added committee_agent_count column (INTEGER, default: 0)
- Added fallback_used column (BOOLEAN, default: 0)

Also fixed:
- Imported daily_workflow_models in services/database.py to ensure models are registered
- Added _create_daily_workflow_tables() to database setup
- Created migration script to add columns to 35 existing databases
- Fixed WorkflowError type in frontend to use constructor for proper 'name' property

This resolves the 'no such column' sqlite3 errors when accessing the today-workflow API.

backend/verify_schema.py

@@ -0,0 +1,28 @@
+import sqlite3
+
+db_path = r'c:\Users\diksha rawat\Desktop\ALwrity\workspace\workspace_alwrity\db\alwrity_alwrity.db'
+
+conn = sqlite3.connect(db_path)
+cursor = conn.cursor()
+
+# Check tables
+cursor.execute("SELECT name FROM sqlite_master WHERE type='table' AND name LIKE 'daily_%'")
+tables = cursor.fetchall()
+print(f"Daily tables: {tables}")
+
+if tables:
+    cursor.execute("PRAGMA table_info(daily_workflow_plans)")
+    cols = cursor.fetchall()
+    col_names = [c[1] for c in cols]
+    print(f"\nColumns in daily_workflow_plans: {col_names}")
+    
+    required = ['generation_mode', 'committee_agent_count', 'fallback_used']
+    for col in required:
+        if col in col_names:
+            print(f"  ✓ {col}")
+        else:
+            print(f"  ✗ {col}")
+else:
+    print("No daily tables found")
+
+conn.close()