fableplan-work-on-issue

# fableplan-work-on-issue Chain fableplan → work-on-issue into one autonomous run: Fable 5 plans the implementation for a GitHub issue (plan posted to the issue), then work-on-issue implements that plan in an isolated worktree and opens a PR that closes the issue. This is **validate-fableplan-loop with the validation and review-loop stages removed** — no `validate-issue` before planning, and the handoff is to `work-on-issue` (single-shot, ends at the open PR) rather than `work-on-issue-loop` (which triggers `@claude` and cycles through review). Reach for this when you already trust the issue and just want a Fable-vetted plan built and shipped as a PR, without paying for validation or driving review to convergence. **Do not skip or reorder the chain.** The plan gates implementation — that's the point of routing through fableplan. There is no Capability gate here: unlike validate-fableplan-loop, this skill has no validation step to produce a score, so fableplan always runs. Every step of each skill still runs; only the "wait for the user's reply" moments are replaced by the handoff below. ## Input A GitHub issue is **required** (work-on-issue targets an issue): a full URL, `#<N>`, bare `<N>`, or `owner/repo#N`. With nothing supplied, default to the latest open issue in the current repo. If no issue can be resolved, stop and ask — do not plan or implement against a paraphrase. ## Steps ### 0. Pre-plan gate — check the issue is still worth planning Before dispatching any ...