289dcc375c
Migration 025_add_shared_links was inserted into the Alembic chain (between 024_add_api_tokens and 025_add_user_notifications) after some databases had already been migrated past that point. Those databases never had the shared_links table created, causing OperationalError when the expire-shared-links scheduled task runs or when users try to create shared links. This commit: - Adds migration 027_ensure_shared_links_table that idempotently creates the table if it doesn't exist - Updates migrations/env.py to import all models for autogenerate support - Adds shared_links to db_migrate.py _TABLE_ORDER for proper migration ordering - Adds a regression test verifying the fix Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>