v0.4.0

Added

• Plugins — a curated, forkable layer of first-party features a site opts
  into (brisk.json "plugins": { … }), injected into served pages and driven
  from a generic brisk plugin CLI whose verbs load from the server. Adding a
  plugin in a fork is one directory under worker/src/plugins/ plus a registry
  line — no worker-core or CLI changes.
• Comments plugin (on by default) — leave feedback on any element, marked
  by numbered pins (dashed = draft, blue = open, gray = resolved). Drafts are
  local-first (localStorage; editable, copy as markdown to hand an agent),
  publish to share via brisk.db with realtime + an audit trail. Resolve,
  reply, and soft-delete from the widget or the CLI
  (brisk plugin comments …), or copy the whole log as markdown. Right-click
  the toolbar for the command menu. Typing in the widget never triggers the
  host page's own shortcuts. Minimize it to a corner bubble (click to reopen);
  Shift+C fully hides it.

Changed

• The /host page now covers the self-hosted path (Docker Compose,
  Kubernetes/Helm, npm create brisk, storage options) alongside Cloudflare,
  instead of documenting the Worker deploy only.

Fixed

• The /changelog page renders **bold** in entries instead of showing the
  literal asterisks.