Previously the orchestrator ran exactly one implementer + reviewer pair,
printed "(Automatic state mutation by the orchestrator is v2.)", and
exited — the human had to tick the bullet, flip story status, rebuild
state, and re-invoke for every slice. V2 closes the loop:
- Parses the JSON the implementer + reviewer prompts ask the agents to
emit (`parseAgentJson` — tolerates both ```json fenced and bare
trailing { ... } shapes). The reviewer's `decision` and the
implementer's `status` are the orchestrator's discriminators.
- On approve: ticks the bullet in `_story.md` and writes it back. If
the story now has zero unchecked bullets, flips its frontmatter
`status: in-progress → done`; if all sibling stories are also done,
flips the epic's frontmatter the same way. Commits the mutation on
the host as a separate `chore(work): tick/finish ...` commit so the
implementer's slice commit stays clean. `_state.json` regenerates
via the existing pre-commit `rebuild-state` hook.
- On reject: re-dispatches the implementer with the reviewer's notes
appended to TASK_FILE_CONTENT, bounded by SANDCASTLE_MAX_ATTEMPTS
(default 3). On the (max+1)th reject the loop exits 1 with the last
notes printed.
- After every approved slice, calls findNextTask again and dispatches
the next ready bullet — including across story boundaries (the
state-builder treats any non-done story with satisfied deps as
ready, so flipping story 01 to done unblocks story 02 automatically).
- Flags: `--once` (legacy single-slice behavior) and `--max-tasks N`
bound the loop. Default is unlimited — matches the
continuous-execution preference.
Auth/sandbox setup is now pulled out of the per-iteration path so the
loop reuses one sandbox across slices.