spectre-create_pr

create_pr

Produce a grounded draft PR.

Inputs

• $ARGUMENTS: TARGET_BRANCH (default origin/main), feedback focus, verification, all-or-none EXPECTED_BASE_SHA/EXPECTED_HEAD_SHA/EXPECTED_DIFF_SHA256, or --orchestrated.
• Orchestrated --pr-phase pending|final-update: pending needs complete candidate tuple, local verification RUNNING, and returns URL/body; final-update needs its URL/body, same tuple, and FINAL_VERIFICATION_SUMMARY, updating existing draft Testing only. A parent may supply a frozen work-ID set. Orchestrated Create PR does not write a work record; an unchanged candidate is a no-op.
• Resolve just-in-time: branch (not main/master), fetch target and derive PR_BASE, BASE_SHA, HEAD_SHA, canonical git-diff-v1 DIFF_SHA256 over binary/full-index/no-color/no-renames {BASE_SHA}...{HEAD_SHA}, commits, branch/commit issue ref, gh, unpushed commits.
• Expected fields are all-or-none. After fetch compare live tuple and clean candidate worktree (committed review/proof artifacts allowed; ignored lifecycle excluded). Tracked or non-ignored untracked changes return PR_CANDIDATE_STALE before push, create, or edit. Without gh, return title/body for manual draft.

Working Set

Target-to-HEAD diff and commit log, issue reference, and any GitHub PR template (required sections win).

Outputs + DONE

• Conventional type(scope): summary: <70 chars, imperative, lowercase after colon, no period; grounded body scales to change. Standalone/pending opens gh pr create --draft only without an open branch PR, else updates it.

DONE: fetched tuple is verified; every factual claim is grounded; Testing honestly reflects diff tests and verification, never turns advisory non-green into pass; sourced/placeholder Why; no secret/credential/PII; only a draft is opened or updated, never duplicated.

Method / guardrails

1. Ground: What is behavior; Why is issue, commits, branch, or <!-- WHY: motivation not found in commits/issue — fill in -->; visible How/trade-offs; Testing reports supplied verification, changed tests, or none.
2. Scale: trivial What/Why/Closes; standard Summary/Changes/Testing/Closes; complex adds trade-offs, breaking/rollback, UI/CLI evidence, reviewer focus. Derive type/scope from change; add found issue links only.
3. Verify before side effects: map every claim to diff/commit/issue, drop unsupported claims/secrets, verify tuple, clean candidate, and this branch's own open PR (gh pr list --head; never another branch's or closed), then push.
4. Work-record ownership: in orchestrated mode return PR evidence to Ship without writing a work record. In standalone mode only, when no Execute or Ship parent owns history, invoke Skill(spectre-work-record) once at the terminal boundary after the draft exists; that write and explicit historical correction are unchanged; report capture failure/recovery input without blocking draft. Refresh a stale parent candidate; a draft is not merged.
5. Draft lifecycle: pending grounds RUNNING, pushes, updates that open PR, else creates the draft, and returns its PR identity/URL against the frozen work-ID set for Ship to associate. Final-update rechecks its tuple/clean candidate; if repairs changed the tuple, refresh candidate-sensitive claims under freshness, grounding, secret gates, verify clean repaired HEAD, pushes, re-resolves/rechecks live tuple, then gh pr edit only Testing from FINAL_VERIFICATION_SUMMARY; never mark ready.