Pr

/pr — prove the feature works, then open the PR

You are the orchestrator + fixer. Verification splits by who's best at it:

• The subjective question — "does the feature I just built do what was intended?" → delegate to a fresh verifier sub-agent that drives the real app and judges it. Independence (it didn't write the code) + context-isolation (app-driving is verbose) pay off here. Most new features have no spec — this is agentic verification, not "run the test." Do it first.
• Objective, codified checks (type-check, lint, unit, existing e2e) → you run them, after, as a regression sweep. Pass/fail can't be rubber-stamped, so delegating buys nothing but a round-trip — and you need the error to fix it.

Pairs with dev-local-setup (reproducible stack) and e2e-setup (the suite).

1. Preconditions

On a branch, not the default branch; changes committed.

2. Bring up the stack — once

Start it via your repo's dev launcher (see dev-local-setup). You own it; the verifier reuses it.

3. Verify the FEATURE (delegate) → fix → re-verify (loop)

Brief from the plan file if one exists (point the verifier at it), else pass the requirements inline. Spawn a read-only verifier:

You are a read-only verifier. Do NOT edit code. Independently confirm THIS feature
works by driving the running app (the stack is already up). It likely has no
automated spec — verify it agentically.

FEATURE (what a user should now be able to do, and the observable success state):
  <intent / acceptance criteria>          (or: see plan file <path>)
HOW TO EXERCISE IT:
  <UI route + steps / API call / CLI>
AUTH (if the feature is behind login):
  mint a session first via the repo's session helper and load it before driving.

Drive it (browser via playwright-cli, or the API/CLI): walk the exact steps,
screenshot/record the success state, judge observed vs expected. Return ONLY:

FEATURE: works | broken
  expected: <criteria>
  observed: <what actually happened>
  evidence: <screenshot/video paths>

• broken → fix the implementation, then spawn a fresh verifier. You never declare the feature works yourself.
• Cap at ~3 rounds; if still broken, escalate to the human with the verdict.

4. Regression sweep — you run the codified checks; fix red directly

type-check · lint · unit · existing e2e. Triage failures (real-bug vs stale-test — see e2e-setup); never weaken an assertion to go green. If a fix here changes feature behavior, re-verify (step 3).

5. Open the PR — lead with the feature proof

Get a reviewable link for the success video. GitHub can't play video inline via automation, so upload it somewhere with a stable URL — a dedicated pr-evidence GitHub prerelease (gh release upload), a bucket, or CI artifacts — and link it.

## What changed
<1–3 lines>

## Feature verified ✅  (verifier drove the app)
- <acceptance criteria> — observed working.  📹 Proof: <url>

## Regression guardrails
- [x] type-check · lint · unit · e2e

## How to reproduce
<stack-up command> && <exercise steps>

Rules

• The feature is the verdict — a green suite with an unverified feature isn't done.
• "Does it actually work" → an independent verifier; objective checks → you.
• Never open a PR until the feature is verified. Proof, not claims. Branch → PR only.

Isolates context, not environment: if your stack is single-instance / fixed-port, don't run multiple verifiers in parallel.