fix(prestart): add owner_id to plugin tables after migrations

prestart.sh

@@ -100,6 +100,50 @@ asyncio.run(set_password())
 "
 fi
 
+echo "[prestart] Adding owner_id to plugin tables if missing..."
+python3 -c "
+import asyncio, os, re
+from sqlalchemy.ext.asyncio import create_async_engine
+from sqlalchemy import text
+
+async def fix_owner_id():
+    db_url = os.environ.get('MIGRATION_DATABASE_URL', os.environ.get('DATABASE_URL', ''))
+    if not db_url:
+        print('[prestart] WARNING: No DB URL for owner_id fix')
+        return
+    engine = create_async_engine(db_url)
+    # Tables that should have owner_id (from core migration 0054)
+    tables = ['files', 'folders', 'calendar_entries', 'calendars', 'tasks', 'subtasks']
+    try:
+        async with engine.begin() as conn:
+            for table in tables:
+                # Check if table exists
+                exists = await conn.execute(text(
+                    \"SELECT 1 FROM information_schema.tables WHERE table_name = :t\"
+                ), {\"t\": table})
+                if exists.fetchone() is None:
+                    continue
+                # Check if owner_id column exists
+                has_col = await conn.execute(text(
+                    \"SELECT 1 FROM information_schema.columns WHERE table_name = :t AND column_name = 'owner_id'\"
+                ), {\"t\": table})
+                if has_col.fetchone() is None:
+                    await conn.execute(text(
+                        f\"ALTER TABLE {table} ADD COLUMN IF NOT EXISTS owner_id UUID REFERENCES users(id) ON DELETE SET NULL\"
+                    ))
+                    await conn.execute(text(
+                        f\"CREATE INDEX IF NOT EXISTS ix_{table}_owner ON {table} (owner_id)\"
+                    ))
+                    print(f'[prestart] Added owner_id to {table}')
+        print('[prestart] owner_id fix completed.')
+    except Exception as e:
+        print(f'[prestart] WARNING: owner_id fix failed: {e}')
+    finally:
+        await engine.dispose()
+
+asyncio.run(fix_owner_id())
+"
+
 echo "[prestart] Seeding admin user if not exists..."
 python3 /app/scripts/seed_admin.py || echo "[prestart] WARNING: Admin seed failed (may already exist)"