Uninstall & Cleanup

When the plugin is deleted (not just deactivated) via the WordPress UI, uninstall.php runs and:

1. Drops all 19 omobile_* tables
2. Deletes all omobile_* options from wp_options
3. Removes the manage_omobile capability from all users and the omobile_manager role
4. Deletes all omobile_* cron events
5. Removes all omobile_* transients

Deactivating the plugin (without deleting) leaves all data intact so it can be reactivated cleanly.

To keep data on deletion, add to wp-config.php before deleting:

phpdefine( 'OMOBILE_KEEP_DATA_ON_UNINSTALL', true );