v0.7.0

Features

• Added sdt purge <path...> [--dry-run] [--force] to erase a path from every change across all branches, enabling sdt gc to reclaim space from mistakenly recorded build artifacts. Includes dry-run reporting and safety gating via --force.

Fixes

• .gitignore is now honored even when no colocated .git directory is present, preventing unintended capture of build output in sdt-only repositories.

Breaking Changes

• sdt purge rewrites history and resets moment and operation logs; purged content cannot be recovered via sdt undo.