Two project-wide rules are now explicit across every skill:
1. Only the Boss commits. No skill agent (implementer,
brainstormer, planner, debugger, fieldtester, docwriter,
architect, bencher) runs `git commit`. Agents write their
artefacts to the working tree as unstaged changes; the Boss
inspects, decides commit shape, and commits.
2. main HEAD is sacrosanct. No actor runs `git reset` or
`git revert` on main. Bad work stays in the working tree
where it is still discardable via `git checkout -- <paths>`.
Implement loses the `iter/<iter_id>` branch mechanic entirely;
Phase 0 of the orchestrator-agent now does a clean-tree check
and refuses to start on a dirty tree. Per-task agent commits
are removed everywhere; reviewers operate against
`git diff HEAD` instead of `pre_task_sha..head_sha`.
Motivation: 2026-05-11 iter 23.4 stranded prep2/prep3 commits on
an iter-branch that never integrated to main, then a corrected
spec falsely claimed those commits had shipped. Branch-per-iter
+ manual-Boss-merge + iter-stacking made the strand structurally
possible. See docs/journals/2026-05-11-iter-disc.1.md for the
full per-task notes and motivation.
Brummel