- Moved `verify-ask262-debug.mts` from `scripts` to `lib-src/node`.
- Updated import to use `#self` alias.
- Added npm script `verify-ask262` to run the verification script.
- Adjusted `scripts/tsconfig.json` to include the new file location.
Restore original formatting in engine262 folder:
- unicode.d.ts: revert to 4-space indentation, single quotes
- syntax-error.d.ts: revert to 4-space indentation, remove semicolons
Biome should not format files in engine262/ as it's excluded in biome.json.