v0.4.0

Added

• fork and diff let local archives branch into standalone SQLite copies and
  compare added, changed, and removed evidence across archive states (#14).
• crawl github and crawl telegram wrap gitcrawl and telecrawl adapter
  exports, so those crawler outputs can stream straight into MiseLedger (#13).
• prune policy and prune --policy now provide item-level retention for large
  archives. The default policy dry-runs old operational-noise items first, and
  destructive runs require --apply --export <path> so matched records are
  written to compressed adapter JSONL before deletion (#12).
• Adapter imports now read .jsonl.gz files, including retention prune exports.

Changed

• import adapter --source keeps the override behavior but now warns when the
  override disagrees with the embedded source.kind (#13).
• Quickstart and asset docs now cover existing OpenClaw and crawler installs
  plus the StationTrail and SourceHarvest fold-in path.