Add an interactive progress bar (using schollz/progressbar) to the
file restore loop, matching the existing pattern in verify. Shows
bytes restored with ETA when output is a terminal, falls back to
structured log progress every 100 files otherwise.
Fixes#20
The VerifySnapshotWithOptions method had a dead code path for opts.Deep
that printed 'not yet implemented' and returned nil. The CLI already
routes --deep to RunDeepVerify (which is fully implemented). Remove the
dead branch and update the VerifySnapshot convenience method to also
route deep=true to RunDeepVerify.
Fixes#2
clawbot