build-fountain-applisted

# Build an app on Fountain Fountain's own UI is a console. Every product surface that talks to a person is a separate app on `/api`, on its own origin, with no privileged access. Three of them are the reference implementations — clone their shape rather than inventing one: | Example | Shape | Study it for | |---|---|---| | [fountain-team](https://github.com/managoat/demos/tree/main/apps/fountain-team) | static SPA, raw `fetch` (predates the SDK) | roster + thread + queue, team stream, PKCE sign-in (`src/lib/oauth.ts`) | | [fountain-workbench](https://github.com/managoat/demos/tree/main/apps/fountain-workbench) | SPA **plus a Bun server** (`server/`) | when an app needs its own backend: shared projects, a member never holds the owner's key, project-scoped proxy of `/api`, an MCP surface for the agent | | [fountain-demos](https://github.com/managoat/demos/tree/main/apps/fountain-demos), an index of [briefing-room](https://github.com/managoat/demos/tree/main/apps/briefing-room), [table-talk](https://github.com/managoat/demos/tree/main/apps/table-talk), [repo-sage](https://github.com/managoat/demos/tree/main/apps/repo-sage), [mission-control](https://github.com/managoat/demos/tree/main/apps/mission-control), [watchtower](https://github.com/managoat/demos/tree/main/apps/watchtower), [arena](https://github.com/managoat/demos/tree/main/apps/arena), [mend](https://github.com/managoat/demos/tree/main/apps/mend), [rounds](https://github.com/managoat/demos/tree/main/apps/rounds) | one