Author and run Typebulb bulbs — single-file markdown apps (TypeScript/TSX) that run
locally via `npx typebulb` (full power: filesystem, database, `server.ts`, `tb.ai`) or
render live inline in your coding agent's session through Typebulb's agent mirror (embedded,
client-only). A bulb can be a visual widget (chart, simulation, diagram, calculator, UI),
a full-stack tool with a Node backend, or an AI app that calls models at runtime. Covers
the bulb format, the `tb.*` API, trust, and the local run/embed workflow. Use when the
user wants a bulb, a quick local tool (visual, backend-backed, or AI-powered), or
something visual rendered inline in the conversation.