v0.4.0

Onboarding gains in-chat skill editing, the install instructions become accurate, and a round of
input/terminal reliability fixes lands.

Added

• In-chat skill editing for the Setup Assistant. The assistant can now read and edit your skills
  directly in the conversation — new skill_list / skill_write tools on the curated loom-setup
  surface — instead of sending you to the Skills UI. Writes are bounded strictly to your skill store
  (it can never modify Loom's bundled skills) and are confirm-first: it shows you the skill name and
  full content and gets your go-ahead before writing.
• Hosted landing page. A GitHub Pages workflow publishes the site/ landing page.

Fixed

• Accurate one-line install. The README and install.sh / install.ps1 pointed at a placeholder
  loom.example domain that didn't resolve. They now use the real raw-GitHub script URLs, so
  curl … | sh and irm … | iex work exactly as written.
• Composer draft survives maximize/minimize. Typing a message into a session's composer and then
  maximizing or minimizing that terminal no longer discards your unsent draft — it's preserved per
  session across the layout change.
• No garbled turns when typing in the raw terminal. A message delivered to a session (e.g. an
  automated status report) is no longer appended onto text you've half-typed directly in the terminal
  pane. Delivery now waits until you submit or clear your line — including multi-line pastes — and never
  alters your text.