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/migrate_schema.py

@@ -0,0 +1,70 @@
+#!/usr/bin/env python
+"""Migration script to add missing columns to daily_workflow_plans table."""
+import sqlite3
+import os
+from pathlib import Path
+
+def migrate_database(db_path):
+    """Add missing columns to daily_workflow_plans table."""
+    if not os.path.exists(db_path):
+        print(f"Database not found: {db_path}")
+        return False
+    
+    conn = sqlite3.connect(db_path)
+    cursor = conn.cursor()
+    
+    try:
+        # Check if columns already exist
+        cursor.execute("PRAGMA table_info(daily_workflow_plans)")
+        existing_cols = {row[1] for row in cursor.fetchall()}
+        
+        columns_to_add = {
+            'generation_mode': "VARCHAR(30) NOT NULL DEFAULT 'llm_generation'",
+            'committee_agent_count': "INTEGER NOT NULL DEFAULT 0",
+            'fallback_used': "BOOLEAN NOT NULL DEFAULT 0"
+        }
+        
+        for col_name, col_def in columns_to_add.items():
+            if col_name not in existing_cols:
+                alter_sql = f"ALTER TABLE daily_workflow_plans ADD COLUMN {col_name} {col_def}"
+                print(f"Adding column: {col_name}")
+                cursor.execute(alter_sql)
+                print(f"  ✓ Added {col_name}")
+            else:
+                print(f"  - Column {col_name} already exists")
+        
+        conn.commit()
+        print("\n✅ Migration completed successfully!")
+        return True
+    
+    except Exception as e:
+        print(f"❌ Migration failed: {e}")
+        conn.rollback()
+        return False
+    finally:
+        conn.close()
+
+def find_and_migrate_databases():
+    """Find all databases and apply migrations."""
+    workspace_dir = r'c:\Users\diksha rawat\Desktop\ALwrity\workspace'
+    
+    if not os.path.exists(workspace_dir):
+        print(f"Workspace directory not found: {workspace_dir}")
+        return
+    
+    # Find all .db files
+    db_files = list(Path(workspace_dir).glob('**/db/*.db'))
+    
+    if not db_files:
+        print("No databases found to migrate")
+        return
+    
+    print(f"Found {len(db_files)} database(s) to migrate:\n")
+    
+    for db_path in db_files:
+        print(f"Migrating: {db_path.name}")
+        migrate_database(str(db_path))
+        print()
+
+if __name__ == '__main__':
+    find_and_migrate_databases()