## Summary
- add the missing `debug` method to the runtime-resolution logger mock
- prevent logger calls from short-circuiting runtime selection
assertions
## Test plan
- `pnpm --filter @fusion/engine exec vitest run
src/__tests__/runtime-resolution.test.ts`
- `pnpm --filter @fusion/engine typecheck`
- `pnpm check:changesets`
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Tests**
* Updated the runtime-resolution test suite’s mocked logger to also
support debug-level messages, alongside existing log, warn, and error
handling.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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