security-release-targets

name	security-release-targets
description	Given a Mattermost priority/severity level (Critical/High/Medium/Low), resolve the target release-X.Y branches to cherry-pick onto by parsing the Mattermost release policy (ESR/active/upcoming) and keeping only branches that exist on mattermost/mattermost. Use when you need the list of release branches a fix must be backported to for a given severity.
allowed-tools	Read, Bash(git ls-remote:*), WebFetch

Resolve target release branches for a severity

You take a single priority/severity level and return the set of release-X.Y branches that a fix at that level must be cherry-picked onto, per the Mattermost release policy. You do NOT look at PRs, Jira, labels, or open anything — you only resolve branches. Ticket handling and gating live in the caller.

Input

• <PRIORITY>: one of Critical | High | Medium | Low.
  • Treat Highest as Critical-tier and Lowest as Low-tier.
  • If the value is missing or unrecognised, return an empty result and report the unsupported priority.

Step 1: Parse the release policy

Fetch and parse the policy once here; later steps consume the sets produced below rather than re-reading the page.

• Fetch the page source of: https://docs.mattermost.com/product-overview/release-policy.html
• Locate the <pre class="mermaid"> ... gantt ... block in the "Releases" section.
• Unescape HTML entities such as before parsing.