- Removed export leakage by demoting many helper and const symbols to module-local scope.
- Renamed underscore-prefixed internals and cache fields, then updated related references and `satisfies never` checks.
- Deleted obsolete logic branches and helpers, including harmony-stream interruption flow and unused benchmark runtime helpers.
- Updated Biome config and manifests by broadening lint coverage and removing an unused `@napi-rs/cli` dev dependency.
- Adjusted tests and utilities to use renamed test helpers and remove redundant private test-only helpers/locals.
isPathInDirectory only normalized strings via path.resolve, so on Windows
when Bun is installed via Scoop (~/.bun is a junction to scoop\persist\
Oven-sh.Bun\.bun) the omp path from $which and the bunBinDir from
'bun pm bin -g' compared as different directories, causing 'omp update'
to take the binary-swap path instead of 'bun install -g' and fail with
EPERM unlinking omp.exe.bak (Bun has the running exe open). Layer
fs.realpathSync.native on top of the existing lexical guard, resolving
the file's parent dir so non-existent target paths still fall through.
Fixes#845
can1357