execute-phase

Execute Phase

Step executor for units. The unit doc (created by unit-lane) owns Tasks P1…Pn, Evidence rows, and a Progress log — these replace PLAN.md, TASKS.md, progress.md, and ACCEPTANCE.md. Each step runs as an atomic gate/commit.

Argument resolution (first match):

• <NN-slug> P<k> — exactly the step named by the triage order (P1, P2, …)
• <NN-slug> (no step) — all remaining steps, one commit each
• P<k> alone — the step by position in the current unit (last-known NN-slug)

Never infer a step ID absent from the triage block in the unit doc.

Turn contract

Tick every box before ending the turn; an unchecked box means the turn is not done:

✓ Triage verified — unit doc Evidence section header matches
  `bun scripts/unit-route.mjs --triage <slug>` output block (PREFLIGHT.md)
✓ Unit doc read and step selected (explicit P<k> or first unfinished)
✓ Step executed and committed (one commit per step, conventional format)
✓ Evidence rows updated (command → exit/digest → output → verified-by)
✓ Progress log updated with a dated `YYYY-MM-DD HH:MM` entry (what, commit, next)
✓ Diff guard passed (on implement steps) — see `diff-guard` in PREFLIGHT.md
✓ → Next: block printed as the absolute last output

When to use

• A triaged unit from unit-lane: steps include implement/tests/evidence → invoke with <NN-slug> or <NN-slug> P<k>.
• Docs-only units (triage returns only [docs, evidence]) do not load this skill — they are executed in-place by the unit-lane conductor.
• To execute all remaining steps: <NN-slug> with no step argument.
• To repair a failed step: <NN-slug> P<k> (retry the same step).

Step 0 — Discover the project

Per the agent guide's Workflow conventions + documentation map, read the unit doc at docs/features/<NN-slug>/SPEC.md. Verify it carries ## Tasks (P1…Pn), ## Evidence, and ## Progress sections. If absent, the unit is not ready — stop and suggest unit-lane triage first.

Process