v0.22.3

• Lost-track restart. A run whose worker terminal is gone, or that stays idle after a check-in, before any PR is
  aborted and re-dispatched from scratch (bounded, worker.lost-tracking/worker.restarted) (#147). It never
  destroys work: it needs the evidence on two consecutive passes, escalates stuck and keeps the worktree when there
  are unpushed commits or uncommitted edits (the check fails closed), removes a clean worktree without --force,
  captures the worker screen into the run first, waits while the tracker is cooling down, and does nothing
  destructive until its tracker writes succeed. A human Retry resets the restart budget (#151).
• A worker that declares itself blocked (BLOCKED: worktree comment) is escalated to a person — also when it
  exited afterwards — instead of being nudged, handed off or restarted (#150, #151).
• Never type into a bare shell. A nudge into a terminal that is only a shell prompt relaunches the agent (the old
  terminal is closed first; an idle agent from a CLI that does not register with Orca is never mistaken for a shell);
  no-PR worker events keep the issue running in the UI (#144, #151).
• Close-or-reopen decisions on an abandoned delivery stick and release the issue's lease (#145, #151).
• UI. Worker slots are counted the way the tick counts them (#148); the projection rebuilds itself when the
  reducer changes (#149).