Create Pull Request

Create one pull request using exactly one delivery mode:

• staged-delivery — commit the caller's explicitly staged source-owned change set, push a dev* branch, and create the PR.
• committed-branch — push an existing clean non-main branch that is ahead of origin/main, without rewriting or supplementing its commits.

Both modes preserve the captured source-owned change set. The PR workflow independently selects its validation path after the PR exists; this skill neither predicts nor influences that routing.

Inputs

• gamever — optional descriptive value for the PR body. Never resolve or require it for local delivery.
• branch — optional dev* branch name for staged-delivery. If omitted on main, derive dev-<topic> from the staged change. Ignore it in committed-branch.
• commit_title — optional Conventional Commit title for staged-delivery.
• pr_title / pr_body — optional PR text. Otherwise derive truthful text from the delivered diff and caller-supplied test results.
• issue — optional issue number. Add Closes #<issue> to the PR body.

Safety Rules

• Run from the repository root and require an origin remote plus successful gh auth status.
• Never commit directly to main, force-push, amend existing commits, or use git add -A / git add ..
• Preserve unrelated untracked files and never stage them.
• Require zero unstaged tracked changes at invocation. This forbids partially staged paths and unrelated work.
• In staged-delivery, the initial staged path list is the immutable authorized change set. It must include every affected/downstream canonical artifact under bin_artifacts/ that belongs to the source/config/reference change.
• Reject tracked gamesymbols/**, gamedata/**, release-manifests/**, and bin/**/*.yaml; these are forbidden legacy or Release-derived namespaces, not PR deliverables.
• In committed-branch, require an empty index, a non-main attached branch, at least one commit ahead of origin/main, and a non-empty origin/main...HEAD diff. Never create a supplemental publication commit.
• PR validation routing, including whether isolated rebuild and C++ validation run, belongs only to the trusted default-branch workflow after the PR exists. Do not classify or predict its validation path locally.
• Snapshot/gamedata publication runs only in the release pipeline. Never claim workflow-owned CI gates passed locally.
• Commit and push commands may take longer than an interactive timeout. Wait for their real exit status; do not infer success from elapsed time.

Step 1: Select and Guard the Delivery Mode

Record the current state and fetch the target branch:

git branch --show-current
git status --short
git diff --cached --quiet
git diff --cached --name-only
git diff --cached --name-status
git diff --cached --stat
git diff --name-only
git ls-files --others --exclude-standard
git remote
gh auth status
git fetch origin main --prune
git rev-parse HEAD
git rev-parse origin/main
git rev-list --count origin/main..HEAD
git diff --name-only origin/main...HEAD
git diff --name-status origin/main...HEAD
git diff --stat origin/main...HEAD

On Windows PowerShell, use explicit argument arrays and capture $LASTEXITCODE for native commands. Do not use the automatic $args variable as a named parameter:

function Run-Native {
    param(
        [Parameter(Mandatory)][string]$Name,
        [Parameter(Mandatory)][string]$Executable,
        [Parameter(Mandatory)][string[]]$CommandArgs
    )
    $output = & $Executable @CommandArgs 2>&1
    $exitCode = $LASTEXITCODE
    Write-Output "<<<$Name exit=$exitCode>>>"
    if ($null -ne $output) { $output | ForEach-Object { $_.ToString() } }
    Write-Output "<<<END $Name>>>"
}

git diff --name-only must be empty in both modes. Untracked files may remain, but record and preserve them.

Mode A — staged-delivery

Exit 1 from git diff --cached --quiet proves staged changes exist. Save the exact cached path list as INITIAL_STAGED_PATHS, review the cached diff for unrelated files or credentials, and derive the summary.

• On main, validate the supplied/derived branch with git check-ref-format --branch <dev-branch> and require it not to exist locally or on origin.
• On an existing dev* branch whose HEAD equals origin/main, use that branch.
• On any other branch, stop and ask the caller to use main or a suitable dev* branch.

Mode B — committed-branch

Exit 0 means the index is empty. Require an attached branch other than main, a valid branch name, an ahead count greater than zero, a non-empty origin/main...HEAD diff, and a clean tracked worktree. Capture INITIAL_BRANCH, INITIAL_HEAD, AHEAD_COUNT, and INITIAL_COMMITTED_PATHS. Read the full diff and log; never rewrite those commits.

For either mode, set PR_BRANCH, then reject duplicate open PRs:

gh pr list --state open --head <PR_BRANCH> --json url

Step 2: Revalidate the Authorized Index

Do not run formatters or generators in this skill. In staged-delivery, verify that the cached path list still equals INITIAL_STAGED_PATHS and that no unstaged tracked path exists:

git diff --name-only
git diff --cached --quiet
git diff --cached --name-only
git diff --cached --stat
git diff --cached --check

Require a non-empty staged diff, review it again, and stage nothing else. Explicitly reject any forbidden legacy/output namespace listed in the Safety Rules. In committed-branch, apply the same path rejection to origin/main...HEAD, then require both index and tracked worktree to remain clean and HEAD == INITIAL_HEAD.

Step 3: Create the Source Commit

In staged-delivery, create the validated branch when currently on main:

git switch -c <dev-branch>

Derive or validate <type>(scope): <summary>: begin with a verb, keep it at most 100 characters, and omit the final period. Commit exactly the existing staged index:

git commit -m "<commit_title>" -m "Co-Authored-By: Codex <codex@openai.com>"

Verify the commit changed exactly INITIAL_STAGED_PATHS and the tracked worktree/index are clean. In committed-branch, create no commit and require HEAD == INITIAL_HEAD.

Step 4: Push and Create the Pull Request

Immediately before push, require the intended branch, clean index/worktree, a positive ahead count, and a final origin/main...HEAD path list equal to the captured source paths. In committed-branch, also require HEAD == INITIAL_HEAD.

Push without force:

git push -u origin <PR_BRANCH>

Build a truthful body from the delivered diff and caller-supplied validation evidence. Do not predict the workflow's validation path or claim its gates have already passed. A suitable shape is:

## Summary
- <behavioral change>
- <supporting change>

## Validation
- implementation-specific tests: <commands/results supplied by the caller>
- repository PR validation: delegated to trusted `source-artifact-required` / `pr-validate` CI

Closes #<issue>

If gamever was supplied, it may be included as descriptive context, not as evidence of local validation. Omit the issue line when absent.

Create exactly one PR against main:

gh pr create --base main --head <PR_BRANCH> --title "<pr_title>" --body "<pr_body>"

Report the branch, commit SHA, pushed remote, PR URL, and final committed paths. For committed-branch, report INITIAL_HEAD and the initial ahead count. If push succeeds but PR creation fails, report the remote branch and exact failure; do not delete the branch or create another commit.

Checklist

• Exactly one delivery mode was selected and no unstaged tracked changes existed.
• The local commit contains the source/config/reference change and complete bin_artifacts closure.
• No tracked snapshot, gamedata, release-manifest, or bin/**/*.yaml path was added.
• The PR body does not predict the workflow-owned validation path or claim unrun CI results.
• No duplicate PR existed; the branch was pushed without force; exactly one PR was opened against main.