Check whether the installed riverflow framework is out of date against the latest on GitHub, and offer to update. Canonical trigger is the prefix "rv:update-version". Clones https://github.com/phidn/riverflow into a temp dir, reads its docs/framework/VERSION, semver-compares it with the version installed in this repo, shows the changelog delta, and — only if the user confirms — copies the newer framework (templates included) and skills over (never touching the user's own docs instances). Use when the user types "rv:update-version" or otherwise asks to check/apply riverflow updates (e.g. "is riverflow up to date?", "update riverflow", "/rv:update-version").
Enter the riverflow lifecycle at the front door — before any plan or code exists. Facilitates a structured brainstorm of a problem/idea (context recall from wiki/ADRs/plans, intake classification, options + trade-offs, pressure-testing) and crystallizes the result into a draft plan in docs/plans/ (plus proposed ADRs / backlog items when they surface), ready for the human to review and flip to approved. This is the "brainstorm → log plan" front half of the loop; rv:recap is the back half. Canonical trigger is the prefix "rv:brainstorm" followed by the topic/problem (e.g. "rv:brainstorm offline mode for the editor", "/rv:brainstorm"). Also fires on natural phrasing like "let's brainstorm X into a riverflow plan". Use when the user wants to think a change through with the framework before implementing — NOT when they ask for a direct fix or already have an approved plan.
CORE-MAINTAINER ONLY — cut a new riverflow framework version. Bumps docs/framework/VERSION and adds a matching docs/framework/CHANGELOG.md entry (deciding MAJOR/MINOR/PATCH from the changes since the last release, per the framework's own SemVer rules). This skill is NOT part of an install — it lives only in the riverflow core repo and is never copied into a project that installs riverflow. Use when maintaining the riverflow repo itself and you want to release a new version, e.g. "rv:release", "rv:release 0.2.0", "bump riverflow version", "cut a riverflow release".