修复了一点bug，然后增加了图层拆分更多的功能

tests/database-readiness-contract.test.ts

@@ -11,6 +11,7 @@ describe("PostgreSQL readiness contract", () => {
     for (const table of [
       "assets",
       "generation_jobs",
+      "seedream_layer_compositions",
       "usage_events",
       "projects",
       "image_templates",