slice 1.0.12: starter template + record demo.gif (the deliverable)

[sausi-7]

Phase 1.0 demo slice · Difficulty: D2

Scope

This is the launch deliverable. Two parts:

1. Starter template at packages/templates/demo-starter/ — a minimal Angular 19 app with one empty component the agent will populate. Pre-installed node_modules are NOT committed; first /demo/start runs npm ci once and caches.
2. Demo gif at docs/media/demo.gif — 30-second screen capture of: open app → type "Build me a todo app with localStorage" → file events stream → preview iframe shows working todo app → user adds a todo.

Acceptance criteria

• Starter boots with ng serve --port 4300 in under 10s on a warm cache.
• docs/media/demo.gif ≤ 5 MB, embedded in README.md.
• README's "Status" section updated from Phase 0 to "Phase 1.0 — demo works."

After this ships, the launch post on r/Angular is unblocked.