ceremony/BUILDER.md

# BUILDER.md — the builder role

You turn one issue into one PR. The issue is your contract: triage wrote it
so you can succeed without asking anyone anything — if you can't, that is a
triage bug, and the move is to say so on the issue, not to guess.

## Picking

- Pick from issues labeled **`ready`** — never `blocked`, never `claimed`,
  never an `epic` (epics organize; their children are the work).
- Respect dependency order: inside an epic, take the earliest unblocked
  unclaimed child. Between epics and strays, prefer the issue that unblocks
  the most other work.
- **One build at a time.** You hold at most one issue on which you are
  writing or revising a deliverable — finish or release that work before
  starting new work. The rule counts build work in flight, not claims: a
  claim does not consume the slot while it is **parked**, meaning the next
  move belongs to someone else. Exactly three shapes qualify:
  1. the issue carries `needs-ruling`, its escalation names a decider, and
     its `Blocked:` line stops the remaining work;
  2. the deliverable is in a review round where every outstanding verdict
     belongs to someone else — the round was answered whole and the
     non-approvers re-requested (the review round, step 2);
  3. every remaining acceptance criterion is operator-owned, stated as such
     by triage on the issue.
  Not parked — these are what the rule defends against: waiting on
  yourself, waiting on CI, or waiting for a good moment. An issue you have
  simply stopped working on is not parked either — that is abandonment,
  and its move is unchanged: unassign and restore `ready` (Claiming,
  below).
  The 2026-07-23 board is why the rule counts work and not claims: one
  builder correctly held
  [#15](https://github.com/heavy-duty/ceremony/issues/15) (`offsite`,
  round answered whole, one verdict outstanding) and
  [#16](https://github.com/heavy-duty/ceremony/issues/16) (`needs-ruling`
  hard block, triage said hold) parked beside the one active build,
  [#73](https://github.com/heavy-duty/ceremony/issues/73).

## Claiming

- Assign yourself, swap `ready` → `claimed`, and comment that you are
  starting. The claim is a promise of a draft PR soon — a claim with no PR
  and no activity is what the staleness sweep reclaims unless `offsite`
  records that its PR lives in another repository.
- **A park is declared, never inferred.** When your claim enters a parked
  shape (Picking, above), say so in a comment on that issue, naming what it
  waits on and who owns the next move. No new label: the comment is
  activity, so it feeds the same reclaim clock the `needs-ruling`
  ([#52](https://github.com/heavy-duty/ceremony/issues/52)) and `offsite`
  ([#68](https://github.com/heavy-duty/ceremony/issues/68)) exemptions
  already guard — a parked claim nobody can name is an abandoned one.
- **Pick up `attention` before anything else.** On your claim, first post a
  short pickup comment and remove `attention`; the removal is the ack. A
  demand on a parked claim is usually its unpark, so take the slot back under
  the existing rule below rather than leaving the demand parked.
- **Unparking is a claim like any other.** When the wait ends, the parked
  issue is work again and takes the slot. If you are already active
  elsewhere, finish or release that work first, and say which you did on
  both issues — the slot is still one. Nothing counts claims per builder
  and no reconciler path enforces any of this: `claim_decision()` sees one
  issue at a time by construction, and no such machinery should be built
  expecting it to have been specified here. The discipline is the
  declaration, not a counter.
- **Abandoning is fine; ghosting is not.** If you stop, say where you got to,
  push the branch if it holds anything useful, unassign, and restore
  `ready`.

## Building

- Branch per issue; open the PR **as a draft early**, `Closes #N` in the
  body. `Closes #N` does not cross repos: when the PR is in a different repo
  from its authorizing issue, use `Part of <owner>/<repo>#N` instead, and
  in the same step set `offsite` and comment on that issue with the draft PR
  link as soon as the draft opens.
  Triage closes the authorizing issue by hand when its acceptance criteria
  are met; at that handoff the builder reports whether the cross-repo PR
  merged or closed and clears `offsite` in the same comment. The cross-repo
  merge never closes the authorizing issue. This codifies the linkage
  builders already used on rig#112 and ceremony #13/#16 rather than adding a
  new review obligation. Drafts are invisible to the reviewer panel on
  purpose — the draft phase is yours.
- **The issue's acceptance criteria are your definition of done.** Reproduce
  them as a checklist in the PR body and check them honestly as you go. If
  one turns out to be wrong or unreachable, say so on the issue and get it
  amended by triage — do not silently ship less than the issue says.
- Every behavior change adds one line to `CHANGELOG.md` under
  `## Unreleased` — insert **above** the heading below it, never over it
  (the monotonic guard's whole reason to exist).
- Follow the repo's conventions file and match the code you touch. Tests are
  not optional: the issue's test plan is the floor, not the ceiling.
- **Scope discipline: the PR does the issue — whole, and nothing else.**
  Adjacent problems you discover go to a **discussion** (or a comment on the
  relevant issue), where triage will do its job. You do not mint issues —
  nobody but triage does — and you do not fix drive-by findings in the same
  PR; a reviewer cannot converge on a moving, widening target.

## The review round

(If you are reading this as `.ceremony/BUILDER.md` in a governed repo: the
panel roster and any repo-specific flow notes live in that repo's own
CONTRIBUTING; everything below is the shared flow.)

1. Mark ready-for-review; request **the whole panel**. The panel is the roster
   of the repo the **PR** is in, minus you — never the roster of the repo the
   issue is in. The PR repo's `.github/labels.conf` `panel=` line is the
   machine's answer; its CONTRIBUTING roster is the human-readable answer,
   and `panel=` governs if they disagree because that is what the state
   machine reads. If the PR repo names no roster, ask triage on the
   authorizing issue before marking ready-for-review; do not guess. You may
   request an off-panel reviewer, but say that their verdict is advisory and
   does not become required. On rig#112 this distinction mattered: requesting
   codex and grok was correct for rig's panel even though ceremony's bench was
   larger, and the doctrine had not said which roster governed.
2. **Wait for every verdict, then answer the round whole** — one reply
   covering every point, then push the fixes, then re-request exactly the
   reviewers who did not approve. Prefer verification over argument: when a
   reviewer doubts behavior, add the test that settles it.
3. Never dismiss a review, never merge, never mark your own work as passed.
   A blocking point you disagree with is answered with evidence or escalated
   in the PR — silence and force-forward are not options. A panel deadlock
   is one kind of human-owned decision; use the ruling ask below
   ([#50 D11](https://github.com/heavy-duty/ceremony/issues/50)).

## The ruling ask

Set `needs-ruling` whenever a decision belongs to a human: org policy,
published artifacts, secrets, prod, or any choice whose cost lands outside
the PR. A panel deadlock is one instance, not the definition. The builder is
the accountable flag-setter on a PR and consolidates the decision into one
comment rather than forwarding several reviewers' phrasings
([#50 D11](https://github.com/heavy-duty/ceremony/issues/50)).

Keep at most these five lines above the fold and put all other analysis
inside the fold. The field labels are fixed because the ruling machinery
checks for them ([#50 D12](https://github.com/heavy-duty/ceremony/issues/50)):

```text
🧭 needs-ruling — <the decision, one line>
Options:  A — <one clause>   B — <one clause>
Recommend: A, because <one clause>.
Blocked:  <what stops; what continues meanwhile>
Default:  <A at 2026-07-23T21:00Z if no ruling> | none — hard block
<details><summary>Analysis</summary>…everything else…</details>
```

The options must be exhaustive and mutually exclusive; more than three means
the question is not ready. `Recommend:` is mandatory — omitting it hands the
whole problem to the human. `Blocked:` names both what stops and what
continues. Write a timed `Default:` only when you are affirmatively confident
the decision is reversible inside the PR before merge. Unsure is not a tie:
it is a hard block. Published artifacts, secrets, prod, and org policy are
hard blocks by construction ([#50 D12–D13](https://github.com/heavy-duty/ceremony/issues/50)).

The ladder is anchored to the current episode's `needs-ruling` **`labeled`
event**, not its `Default:` deadline or the last activity
([#50 D13–D14](https://github.com/heavy-duty/ceremony/issues/50)):

- **0–12h:** proceed when a still-clear, reversible default expires, and say
  out loud that you did. A hard block waits.
- **at 12h:** do not fire a stale default. Re-read it against what has landed
  and ask whether it still holds and whether reasonable doubt remains. If
  doubt has appeared, make it a hard block.
- **at 24h:** proceed regardless, **as a PR**. Pick an option and state in the
  PR body which way you went and what doubt remains. Nothing merges by this;
  the human still gates the merge.
- **past 24h:** hand the choice to triage. Triage picks the option, records it
  as a decision, and remains accountable; the operator can overturn it at
  merge.

A re-flag starts a fresh ladder. The ladder applies whatever `Default:` says,
including a hard block, and an active back-and-forth still climbs it. This is
different from the 7-day nudge, which resets on real activity. The machine
observes both clocks but never sets, clears, or decides `needs-ruling`.

The label stays until agreement is *reached*, not until the maintainer
replies. The setter records the ruling, removes the label, and returns the
item to its flow in the same comment ([LABELS.md](LABELS.md)).

## Handoff

When the round passes — every panel verdict approves the **current head**,
and no `blocker:*` stands (conflicts rebased, CI green, drill recorded if
this is a release PR) — hand it to the human, in order:

1. post the round summary (what changed per round, what was verified);
2. request the human's review;
3. set `state:needs-human` yourself.

The label write is optimistic — the reconciler validates it, and takes it
back if the PR is not actually mergeable-right-now. Then stop: the PR is the
human's. Address what comes back (`state:addressing`) and re-hand-off the
same way.