sb-implementlisted

# Implement one item ## Apply project language style Before authoring any artifact or user-facing prose, read: ```sh specbind rule read language-style --for consume ``` Apply returned policy only to natural-language prose. `NO_CHANGE RULE_ABSENT` means no additional project preference; any `ERROR` line stops the workflow. **One roadmap item per run.** Not the milestone. There is no orchestrator in v1; dependency waves are something you read, not something you execute. The user's request must match a pending Spec-backed or Direct item in the active Roadmap. A bare change request is not a Direct item, even when it names the exact source file and tells you to edit it. If no active Roadmap or matching pending item exists, stop before reading or changing implementation and route the request through `sb-discovery`. ## 1. Find out which kind of item this is ```sh specbind milestone status ``` The kind decides the whole run: - **Spec-backed** — there is an approved task plan, and it is the work. - **Direct** — there is no plan, no requirements, no design, no contract. The item's summary and the repository are the work. Resolve review mode here, before loading the procedure. An explicit `--review` value wins; otherwise the default is `required` for Spec-backed work and `inline` for Direct work. “Selected mode” in either procedure means this resolved value, not a setting to search for elsewhere. **Never create canonical artifacts for a Direct item.** If the work turns out