What problem does it solve? After migrating a Svelte store to a Redux slice, leftover .store.svelte.ts files, stale imports, and hidden pass-through wrappers create dead code and regressions. This Skill provides a disciplined cleanup and rollback procedure so old stores are deleted only when it is safe. ## Core Features & Use Cases - Zero-Reference Verification: Runs targeted grep searches to confirm no consumer still imports the old store before deletion. - Pass-Through Wrapper Guard: Detects one-line re-exports, proxies, and delegate modules that keep old import paths alive, and requires documented sunset conditions for intentional compatibility shims. - Rollback Recipe: Restores the old store from git history, removes the new slice directory, reducer registration, and saga startup call when a migration must be reverted. - Use Case: After migrating a cart store to a Redux slice and passing tests, use this Skill to verify zero references, delete cart.store.svelte.ts, and produce a per-slice cleanup report. ## Quick Start Verify the migrated cart slice has zero remaining references to the old store, then delete the old .store.svelte.ts file and report the cleanup evidence.
