修复了一点bug，然后增加了图层拆分更多的功能

lib/server/database.ts

@@ -46,6 +46,7 @@ export async function checkDatabaseReadiness(): Promise<void> {
       VALUES
         ('assets', 'SELECT'), ('assets', 'INSERT'), ('assets', 'DELETE'),
         ('generation_jobs', 'SELECT'), ('generation_jobs', 'INSERT'), ('generation_jobs', 'UPDATE'), ('generation_jobs', 'DELETE'),
+        ('seedream_layer_compositions', 'SELECT'), ('seedream_layer_compositions', 'INSERT'), ('seedream_layer_compositions', 'UPDATE'), ('seedream_layer_compositions', 'DELETE'),
         ('usage_events', 'SELECT'), ('usage_events', 'INSERT'), ('usage_events', 'UPDATE'),
         ('projects', 'SELECT'), ('projects', 'UPDATE'),
         ('image_templates', 'SELECT'), ('image_templates', 'INSERT'), ('image_templates', 'UPDATE'), ('image_templates', 'DELETE'),