v0.6.2

Features

• sdt clone now shows live, in-terminal progress across phases: receiving objects, resolving deltas, checking out, and importing history.
• Import progress includes an estimated total commit count (when available) for a real denominator instead of a synthetic percentage.

Improvements

• Progress output is suppressed when stdout is not a TTY to keep logs and pipes clean.
• Clone/import status messages are clearer, with improved error detail on clone failures.
• Progress rendering utilities were centralized in ui for reuse (including consistent bars/spinners and human-readable byte formatting).