[codex] optimize runtime module cache and scene startup

[looopmax]

Summary

• add a version-isolated runtime module cache for CommonJS and JSON modules
• reuse compiled module wrappers and V8 cached data across Cocos Host and Scene process starts
• remove the setTimeout delay from lazy asset refresh batching and process queued refreshes with one Promise.all
• add startup CPU profiling support for the Scene process and related tests

Validation

• npm test -- --runInBand tests/runtime-bundle.test.ts src/core/scene/scene-process/startup-cpu-profiler.test.ts
• npm run test:asset-db

The cache keeps the synchronous module-loading contract, refreshes file freshness asynchronously, and isolates cache files by tool versions.