* chore: tighten file handling in deno/bun, stricter codebase tarball, executor isolation
* fix(worker): gate now-unused extract_tar behind its enterprise+parquet caller
Removing the codebase-bundle caller of global_cache::extract_tar left its only
remaining caller, pull_from_tar, gated on enterprise+parquet, so under other
feature sets the function (and its tokio::time::Instant import) became dead code
and failed CI's -D warnings build. Gate the definition and the import with the
same cfg as the caller so they appear and disappear together.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>