new-issue

File a GitHub issue that a human or agent can pick up cold and implement correctly: grounded problem, goal, approach, acceptance criteria, complexity score, plain-language summary, attribution footer. Never file a placeholder, stub, or thin body; if it is not ready to spec, say so and track it in notes or a parent issue instead.

Spec the best solution per the CLAUDE.md Engineering rules: cost, compute, time, token spend, code volume, and convenience never narrow the option space; only correctness, safety, and the explicit non-negotiables (worktree+PR workflow, verifying claims against code, destructive-action safety) override "best". When the cheap design and the correct design diverge, spec the correct one and let the score say so.

Input

• A description of the bug, feature, or task; still ground it in code (step 2).
• Nothing: derive the issue from the current conversation. When several candidates were discussed, file the one the discussion converged on; name the others and offer to file each fully specified. Never bundle.
• Optionally owner/repo or a repo path when the issue belongs elsewhere (gh issue create -R owner/repo).

Steps

1. Repo and duplicate check

Confirm the repo (gh repo view --json nameWithOwner). Run gh issue list --state open --search "<keywords>" and gh pr list --state open --search "<keywords>". A genuine hit stops the run: surface it and offer to update or comment on it instead. A passing mention does not count.

2. Ground every claim

Each claim about current behavior is held to the validate-issue standard: trace the code path and keep the file:line. A claim you cannot trace is phrased as unverified ("appears to", "needs confirmation"). An issue derived from conversation is re-checked against the actual files; recollection goes stale. On a divergent or stale branch, trace against origin/<default> (git show "origin/$DEFAULT":<path>).

3. Design the approach

For anything beyond a localized bug fix, spec the approach so it passes the validate-issue architecture pass:

• Placement and ownership: the owning layer or component; for shared state, the owner, lifetime, medium, population timing, consumer contract, and failure policy.
• Touch-set: grep the affected symbols and name every site that must change (read, write, default, validate, serialize).
• Conventions: match CLAUDE.md, guardrails, and existing helpers over new infrastructure; respect documented invariants.
• Acceptance criteria an implementer can verify: observable behavior, required tests (a regression test for a bug, red then green), parity surfaces.

4. Score complexity

Apply the formula and routing table in validate-issue step 6; do not restate them. Grade from the touch-set in step 3, and count surface hidden from the diff (tests, parity or offline paths, migrations, docs). The score routes model and effort; never write a duration. Set the fableplan signal per github-issue-format (yes when the score is ≥ 71).

5. Scope check

If the deliverables are separable, apply the split gates in validate-issue step 7, the single owner of the split policy. When every gate passes, file the core issue, fold sub-floor satellites into it as checklist lines, and tell the user which substantial parts warrant their own fully specified issues. Otherwise keep one issue with the parts as checklist lines.

6. Compose and file

github-issue-format owns the title, rationale line, section order, plain-language section rule, and footer (verb Created). A repo issue template or CLAUDE.md issue format overrides it. Fill the body from the steps above:

**Complexity: <score>/100** — Capability <k> (Risk <r>, Uncertainty <u> — <driver>); Volume <v> (Scope <s>, Coupling <c>, Verification <x>) — <model/effort from band> · fableplan: <yes|no>

## Problem
<Current behavior with the file:line citations from step 2; what is wrong or missing and why it matters.>

## Goal
<What is true after this lands.>

## Approach
<The design from step 3: placement, touch-set, key decisions. State that correctness and safety outrank diff size.>

## Acceptance criteria
- <observable behavior or test that must pass>

## Plain simple English
<One short paragraph under 55 words, per `github-issue-format`.>

---
Created with LLM: <current model> | <effort> | Harness: <harness>

File with gh issue create --title "[C<score>] <title>" --body-file <body-file>. Add --label or --assignee only when the repo visibly uses them (gh label list) and the fit is unambiguous.

7. Report

Terse: issue URL, number, one-line summary, complexity score, and any follow-ups you did not file, with why. Offer "validate issue" / "work on issue" as next steps in one line. When the signal is fableplan: yes, also ask in one line whether to post a Fable 5.1 plan before building; never launch fableplan unprompted. Autonomous loop skills that wrap this one parse the signal and apply their own gates instead of asking.