sb-discoverylisted

# Decide what the work is ## 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. ## Select the Discovery procedure Read [ordinary change Discovery](references/ordinary.md). Read that procedure completely before classifying or changing anything. It owns the shared entry, ownership, confirmation, mutation, Brief, checkpoint, and reporting contract. For an ordinary request, also read exactly one provider procedure when its explicit selector is present: - For a local file or directory explicitly supplied as Discovery input, read [Local-files Source Collection](references/local-files.md) completely before classification. Do not infer a conventional source directory. - For explicit `OWNER/REPO` plus a Milestone number, or exactly `https://github.com/OWNER/REPO/milestone/NUMBER`, read [GitHub Milestone Source Collection](references/github-milestone.md) completely before classification. No other URL shape selects that provider. Do not load a provider procedure for an ordinary conversational request. Do not substitute one provider when an explicit selector is invalid or unavailable. ## Shared authority boundary The invocation selects a procedure; it does not confirm a scope that has not been presented. Follow the selecte