works.iterative.claude.zio.log

Copies a resolved vendor session tree into the archive directory. Each file is planned by size, then copied, extended in place, refreshed, or skipped; a per-file failure is recorded rather than aborting the run. Symlinks are never followed, and the archive's directories are restricted to the owner.

A vendor tree can be pruned in the gap between resolving a session's path and actually reading it. The read then fails because the file no longer exists; these helpers re-resolve the session once and retry against whatever root now wins, so a live prune degrades to the mirror instead of an opaque I/O error. A second failure is surfaced as-is: one retry only.