changelog-scan

<objective> Fetches the official Claude Code changelog via the harness CLI's `changelog` command (ported from the old `fetch-changelog`, WebFetch on `code.claude.com/docs/en/changelog.md` as manual fallback), parses version headers and per-version changes (features/fixes/breaking), compares against the last known version recorded in the state file (`~/.claude/logs/00-changelog/<date>-state.json`), and generates a structured update report using `references/templates/changelog-report.md`. </objective> # Changelog Scan Skill ## Overview Fetches and analyzes the official Claude Code changelog to detect new versions and changes. ## Data Sources | Source | URL | Method | |--------|-----|--------| | Changelog | code.claude.com/docs/en/changelog.md | WebFetch | | Docs Index | code.claude.com/docs/llms.txt | WebFetch | | Hooks Ref | code.claude.com/docs/en/hooks.md | WebFetch | | Plugins Ref | code.claude.com/docs/en/plugins-reference.md | WebFetch | | CLI Ref | code.claude.com/docs/en/cli-reference.md | WebFetch | ## Workflow 1. **Fetch** changelog via the harness CLI (ported from the old `fetch-changelog` into `@fusengine/harness`): `bun ${CLAUDE_PLUGIN_ROOT}/../node_modules/@fusengine/harness/dist/cli/bin.mjs changelog` It fetches `code.claude.com/docs/en/changelog.md`, parses versions (current MDX `<Update label="X.Y.Z">` format + legacy `## vX.Y.Z` fallback), writes state to `~/.claude/logs/00-changelog/<date>-state.json`, and prints JSON `{latest, new_since_last_che...