internals

2 post(s)

2026-09-14

Screenshotting a desktop app with no display

Every product screenshot and demo video in FutureOS — including the figures in this blog — is rendered by driving the real React UI in headless Chrome against mock data. No display, no running app, no hand-drawn mockups. The same harness doubles as a UI regression tool.

desktop tooling internals

2026-09-06

Sandboxing an agent on macOS, Linux, and Windows

The product promise is one line: the agent should not touch what you did not allow. Delivering it takes three completely different OS mechanisms — Seatbelt, Bubblewrap, and a restricted token with NTFS ACLs — and an honest list of places where the promise cannot be fully kept.

agent desktop internals