Pr Dev

pr-dev

The final delivery lifecycle driver. One objective's PR, from open → review addressed → CI green → merged, under the repository's actual merge policy.

Why this skill exists

After a PR opens, the real work is staying on top of CI failures, reviewer threads, and merge conflicts — often across many minutes. A one-shot "check and report" leaves the PR stalled whenever a simple retry or two-line fix would have unblocked it, and it misses threads that arrive after the initial check. This skill runs a persistent drive loop — re-fetch, act, push, loop — so nobody babysits GitHub tabs.

Two things changed from the earlier version, and they matter:

1. It is not called once per worker. A worker task ends at commit + handoff. pr-dev runs once per objective, on the PR that deliver-dev opened from the integration branch. Driving five PRs for one objective was the defect, not the workflow.
2. Auto-merge is a resolved policy, not an invariant. The old rule ("always enable auto-merge") is right for most repositories and wrong for any repository or user that says otherwise. Policy is now resolved once, from a documented precedence, and reported.

Validation tier

Tier 3 — delivery/CI. CI is the independent authority here. This skill does not re-run the full local suite on every loop; it runs the repo's pre-PR gates before each push it makes (Tier 2) and lets CI be Tier 3.

Inputs

Resolve once at startup; reuse throughout:

If no PR resolves, ask and stop.

Skill directory (all platforms)

Resolve once at startup as SKILL_DIR — every scripts/, templates/, and references/ path below uses it. Never hardcode an absolute path.

Try in order:

1. $CLAUDE_SKILL_DIR when set (Claude Code sets this automatically)
2. $CLAUDE_PLUGIN_ROOT/skills/dev-workflow/pr-dev when the plugin root is known
3. <git-root>/skills/dev-workflow/pr-dev when developing this repo from a checkout
4. find ~/.claude/plugins -path "*/dev-workflow/pr-dev/scripts/fetch-pr-state.sh" -print -quit | xargs dirname as a last resort

If none resolve to a directory containing scripts/fetch-pr-state.sh, stop and say so.

Startup — resolve context and policy (before the first loop pass)

1. Objective context

A PR that came from an objective carries metadata worth knowing: which tasks it contains, which branch is the integration branch, and what delivery strategy was chosen.

PR_JSON="$(gh pr view "$PR" --json number,headRefName,baseRefName,body)"
HEAD="$(jq -r .headRefName <<<"$PR_JSON")"
BASE="$(jq -r .baseRefName <<<"$PR_JSON")"

# objective/<slug> as the head branch, or an "Objective: <id>" line in the body
OBJECTIVE_ID="$(sed -n 's|^objective/||p' <<<"$HEAD")"
[ -n "$OBJECTIVE_ID" ] || OBJECTIVE_ID="$(jq -r .body <<<"$PR_JSON" | sed -n 's/^[Oo]bjective:[[:space:]]*`\{0,1\}\([a-z0-9-]*\).*/\1/p' | head -1)"

When an objective resolves, read .dev-files/objectives/$OBJECTIVE_ID/objective.json and note:

• integration_branch — this is the PR head. Never push to a worker/* branch from here; worker branches are already merged into it.
• delivery.strategy — single-pr means this PR is the whole objective. If you find yourself about to open a second PR for the same objective, stop: that is the defect this design removes.
• delivery.auto_merge — feeds the policy resolution below.
• tasks — useful context when writing review replies ("that path belongs to task-003").

No objective is a perfectly normal case (a one-off PR). Continue without one.

2. Merge policy

POLICY="$(bash "$SKILL_DIR/scripts/resolve-merge-policy.sh" ${REPO:+--repo "$REPO"} "$PR" "${OBJECTIVE_ID:-}")"
echo "$POLICY" | jq .
AUTO_MERGE="$(jq -r .auto_merge <<<"$POLICY")"            # enable | skip
MERGE_METHOD="$(jq -r .merge_method <<<"$POLICY")"        # squash | merge | rebase
MERGE_QUEUE="$(jq -r .merge_queue <<<"$POLICY")"          # true | false | null
STRICT="$(jq -r .strict_branch_update <<<"$POLICY")"      # true | false | null
PROT_SRC="$(jq -r .protection_source <<<"$POLICY")"       # classic | rulesets | classic+rulesets | none

Precedence, highest first (documented in the script's header):

1. TAMIRS_AUTO_MERGE=always|never — explicit user/session override
2. the objective's delivery.auto_merge
3. .dev-files/policy.json → delivery.auto_merge
4. repository capability — a repo with auto-merge disabled overrules any request to enable it
5. documented default: enable auto-merge when the repository allows it

State the resolution in one line before looping:

Merge policy: auto-merge ENABLED (default: repository allows auto-merge), squash + delete branch.
Base master: strict branch updates required, 9 required checks, review required. Merge queue: none.

or

Merge policy: auto-merge SKIPPED (objective auth-system delivery.auto_merge=false).
I will drive to green and ask you before merging.

Then enable it, if and only if policy says so:

if [ "$AUTO_MERGE" = "enable" ]; then
  gh pr merge "$PR" --auto "--$MERGE_METHOD" --delete-branch
fi

Core drive loop

startup:
  resolve PR, HEAD, BASE, OBJECTIVE_ID
  resolve merge policy; report it; enable auto-merge only if policy says enable

loop:
  state = bash $SKILL_DIR/scripts/fetch-pr-state.sh $PR
  if PR merged → cleanup-after-merge.sh; report; STOP
  if PR closed (not merged) → report; STOP

  # Review threads
  address every unresolved thread (see below)
  if any thread needed a push →
    re-apply merge policy (idempotent); restart loop immediately (no sleep)

  # CI
  classify every non-green check (see the table below)
  if branch-related fix pushed →
    re-apply merge policy; restart loop immediately

  # Branch freshness — only when policy says strict
  if STRICT == true and PR is BEHIND → update the branch once (see below)
  if STRICT != true → leave a behind-but-mergeable branch alone

  # Readiness
  if all checks green AND unresolved == 0:
    if AUTO_MERGE == enable → ensure auto-merge/queue entry; poll until merged
    else                    → print the readiness summary and ASK before merging

  sleep(cadence); restart loop

Fetch fresh state

bash "$SKILL_DIR/scripts/fetch-pr-state.sh" ${REPO:+--repo "$REPO"} "$PR"

Pass --repo <owner>/<name> whenever the working directory is not the PR's repository. Every script here resolves the repo from the cwd by default, so the same PR number in a sibling checkout is a real, plausible-looking, completely unrelated pull request — a wrong answer, not an error, which is why it goes unnoticed. All four scripts accept --repo (and --repo=<slug>); it pins GH_REPO for every gh call they make. This matters most for an agent whose shell resets to a different directory between commands.

Quick snapshot inside the loop:

gh pr view "$PR" --json number,title,state,mergeable,mergeStateStatus,\
reviewDecision,statusCheckRollup,headRefOid,headRefName,autoMergeRequest

Address a review thread

Unchanged, and still the highest-value part of the loop:

1. Read the full thread body — understand what the reviewer is asking.
2. Assess and state in conversation: agree, partially agree, or disagree.
3. State the reply before posting it — the user can redirect tone or content. Use the shapes in $SKILL_DIR/templates/review-reply.md.tmpl.
4. Post:

   gh api "repos/$REPO/pulls/$PR/comments" \
     -X POST -f body="$REPLY" -f in_reply_to="$COMMENT_ID"
   

5. Fix code if you agreed or partially agreed.
6. Resolve:

   bash "$SKILL_DIR/scripts/resolve-thread.sh" ${REPO:+--repo "$REPO"} "$THREAD_ID"
   

7. Commit, push, restart the loop.

When the PR spans an objective, say which task a comment lands in — it makes the reply concrete and tells the reviewer the change was intentional, not incidental.

Diagnose a CI failure

RUN_ID=$(gh run list --repo "$REPO" \
  --commit "$(gh pr view $PR --repo $REPO --json headRefOid -q .headRefOid)" \
  --json databaseId,conclusion \
  --jq '.[] | select(.conclusion=="failure") | .databaseId' | head -1)
gh run view "$RUN_ID" --repo "$REPO" --log-failed

Classify CI results

Always grade the current head. Checks from an older commit are history, not status. This is the single most common way a drive loop concludes "failing" about a run that no longer exists.

Branch freshness — loose vs strict

strict_branch_update comes from branch protection's "Require branches to be up to date before merging":

Protection lives in two independent systems. GitHub has classic branch protection (/branches/{b}/protection) and rulesets (effective result: /rules/branches/{b}). A repository may use either, both, or neither, and they do not shadow each other — the effective protection is the union. resolve-merge-policy.sh reads both and reports which answered in protection_source.

This matters because the classic endpoint returns 404 "Branch not protected" on a ruleset-governed branch. Reading only it reports required_checks: [] and requires_review: false for a branch that in fact requires nine checks and a pull request — and the readiness gate then has nothing to wait for. If you ever see protection_source: "none" on a repository you believe is governed, that is the finding, not a green light.

Never update the branch in a loop. If a single update does not clear BEHIND, something else is wrong — diagnose instead of repeating.

Merge queue

When merge_queue is true on the base branch:

• gh pr merge "$PR" --auto "--$MERGE_METHOD" enqueues the PR rather than merging it directly. That is the correct call; do not try to bypass the queue.
• Once queued, the queue owns branch freshness and the merge order. Stop updating the branch and stop re-running checks — you are fighting the queue.
• A PR ejected from the queue (queue CI failed) comes back as a normal failing PR: diagnose, fix, push, re-enqueue.
• Report queue position when GitHub exposes it, and keep polling until merged.

Merging

if [ "$AUTO_MERGE" = "enable" ]; then
  gh pr merge "$PR" --auto "--$MERGE_METHOD" --delete-branch
fi

Run this at startup, after every push, and at the readiness gate — it is idempotent.

When autoMergeRequest is set, GitHub merges as soon as required checks and branch protection (including any required review) are satisfied. REVIEW_REQUIRED alone is not blocked — report "auto-merge enabled; waiting for review" and keep polling.

When policy is skip, do not merge silently. Print the readiness summary and ask:

PR #N is green and has no unresolved threads, but merge policy here is "ask first"
(<source of the policy>). Merge now with squash + delete branch? (yes / no)

--admin — gh pr merge "$PR" "--$MERGE_METHOD" --delete-branch --admin — is for two cases and no others:

• required checks cannot pass for reasons outside the code (e.g. Actions billing), or
• the repository is a solo-maintainer repo with branch protection whose required review can never be satisfied — the maintainer authors every PR, so there is nobody who can approve.

Resolve that second case; never assume it. It holds only where the repository is solo and the caller holds a ruleset bypass actor — the same derivation scripts/github-policy.sh uses. Naming a specific repository here would make every repository that installs this plugin inherit the instruction and bypass its own branch protection:

# solo?  and does the caller actually hold a bypass?
collaborators=$(gh api "repos/$REPO/collaborators" --jq 'length' 2>/dev/null || echo 1)
bypass=$(gh api "repos/$REPO/rulesets" --jq '[.[].bypass_actors // []] | flatten | length' 2>/dev/null || echo 0)
# --admin is the normal path only when collaborators == 1 AND bypass > 0

--admin still requires the user's merge intent. It bypasses protection; it does not bypass policy.

Readiness gate

Confirm ALL before merging or waiting on auto-merge:

• Pre-PR gates green for anything you pushed (bash skills/dev-workflow/_shared/scripts/run-pre-pr-gates.sh when the Makefile defines agent targets)
• Every required check green on the current head (no pending, no failing)
• 0 unresolved review threads (re-run fetch-pr-state.sh — do not trust cached state)
• Branch freshness satisfied per the loose/strict rule
• Merge policy resolved and stated

Print:

PR #N ready — objective auth-system (5 tasks, one PR).
  ✓ 9/9 required checks green on abc1234
  ✓ 0 unresolved review threads
  ✓ Branch up to date (strict base)
  → auto-merge enabled (squash + delete branch); waiting for GitHub

Push a fix

REPO_ROOT="$(git rev-parse --show-toplevel)"
SHARED_DIR="$REPO_ROOT/skills/dev-workflow/_shared/scripts"
if [ -f "$SHARED_DIR/run-pre-pr-gates.sh" ]; then
  bash "$SHARED_DIR/run-pre-pr-gates.sh" "$REPO_ROOT"
fi

git add -p                    # stage only the relevant change
git commit -m "fix: <what and why>

Co-Authored-By: Claude <noreply@anthropic.com>"
git push origin HEAD

Push only to the PR's head branch. When that head is an objective integration branch, the fix belongs there — not on a worker branch that is already merged into it.

Then restart the loop immediately — a push is never a terminal outcome.

Wait for CI

Short cycles: gh pr checks "$PR" --watch. Long cycles (5+ min) or when other work can proceed: the Monitor until-loop — see $SKILL_DIR/references/ci-monitor-loop.md. On a platform without background tasks, poll on the cadence below instead.

Polling cadence

After merge

bash "$SKILL_DIR/scripts/cleanup-after-merge.sh" ${REPO:+--repo "$REPO"} "$PR"

Then:

• Close issues linked in the PR body if still open: gh issue close <N> --comment "Shipped in PR #$PR."
• When an objective drove this PR, mark it done: set objective.json status to completed and record delivery.pr_url (via objective-state.sh set when available).
• Confirm origin/<head> is gone (cleanup-after-merge.sh deletes it when a UI merge left it behind).

If the PR was already merged when the loop starts, skip everything and run only the cleanup.

Blocked state

Blocked on PR #N — need your input:

Issue: <specific description of what can't be resolved>
Options:
  A) <option>
  B) <option>

Which do you prefer?

Never silently stop, guess, or take a destructive action without confirmation. When the block will last a while, suggest /switch-dev handoff so the context survives the wait.

Hard rules

• Re-fetch before every decision — cached state causes wrong merge-readiness calls after fast CI flips.
• Pass --repo when the cwd is not the PR's repository. Repo resolution is cwd-based by default, so a wrong directory yields a plausible answer about a different repository rather than an error.
• Grade only the current head commit. Superseded runs are history.
• Never stop on one idle poll — CI is often queued seconds after a push.
• Never push to any branch other than the PR head.
• Never prefix commits with [skip ci] — required checks must run.
• State every review reply in conversation before posting it.
• Never change tests or CI config to silence a flaky failure unless the logs prove it is branch-related.
• Never retry a flaky run more than 3× per PR — beyond that it is an infra problem needing human judgment.
• Always run pre-PR gates before every push when the repo defines them.
• Always re-apply the merge policy after a push, and never force auto-merge against the resolved policy.
• Never open a second PR for the same objective. One objective = one PR unless delivery.strategy names an exception from core/policies/delivery.md.
• Never update the branch on a loose base, and never update it in a loop.
• Never fight a merge queue — enqueue and wait.
• Always delete the remote branch after merge.

Anti-patterns

Supporting files

Output format

• Progress updates: brief, state-change only (not every poll tick)
• At startup: objective context (when any) + the resolved merge policy, in two lines
• On fix push: Pushed fix: <what> (SHA abc1234). Resuming.
• On flake retry: Retried flaky run (attempt N/3). Watching.
• On thread resolved: Thread "<snippet>": agreed/partial/disagree — replied and resolved.
• At readiness gate: the full readiness summary above
• After merge: one-line summary — SHA, checks, fixes pushed, retries, issues closed, objective marked completed, remote branch deleted