Greptile Summary

This PR adds a targeted fallback path in _extract_mfcontent_info to reliably locate the .mf_install marker file when metaflow is loaded from a code package's .mf_code/ subdirectory.

• When running inside a .mf_code/ layout, get_metaflow_root() resolves to dest_dir/.mf_code while the marker lives at dest_dir/. The new elif branch checks os.path.dirname(get_metaflow_root()) as a reliable second guess, intentionally bypassing METAFLOW_EXTRACTED_ROOT which can hold a relative path (e.g. ".") that breaks in subprocesses that change their working directory.
• The change is gated on target_dir == "_local", so it has no effect on non-local (archive-based) lookups.

Confidence Score: 5/5

Safe to merge; the change is a narrow, well-commented fallback that is unreachable unless the primary path lookup already failed.

The fix is a one-level parent-directory check behind an elif guard. It cannot affect callers that supply a non-_local target_dir, cannot affect runs where METAFLOW_EXTRACTED_ROOT already resolves correctly, and has no write-side effects. The only theoretical downside—a spurious .mf_install file existing in an unrelated ancestor directory—is not a realistic concern for this generated marker file.

No files require special attention.

Important Files Changed

_{Reviews (1): Last reviewed commit: "Revert a fix that is causing more issues" | Re-trigger Greptile}