- Add `typecheck` script (`tsc --noEmit`) to package.json
- Remove conflicting `declare global` from test/setup.ts (superseded
by @cloudflare/workers-types); use `globalThis as any` for test globals
and declare minimal `require` locally to avoid pulling in @types/node
- Cast `createMockEnv()` and `deleteRes.json()` results in admin.test.ts
to silence strict `unknown` / MockKV-vs-KVNamespace errors
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>