pr-review-html

Generate a single-file interactive HTML code-review artifact for a GitHub PR. Fetches the diff via gh, performs an honest severity-coded self-review (critical/major/minor/nit/praise), and renders a portable artifact with collapsible per-file diffs, colored inline annotations, severity filter chips, per-finding checkboxes, and a 'Create feedback prompt' modal that aggregates checked items into a paste-ready follow-up prompt. Triggers on 'review this PR', 'build a PR review', 'review PR #N', 'code review artifact', 'interactive review', 'feedback prompt for a PR'.