StayUp 1.0

StayUp 1.0

First public release.

StayUp is a free Apple Silicon Mac menu-bar Duck that keeps local work alive
when macOS would rather sleep. It is built for long-running local AI agents,
model servers, renders, downloads, and local server work.

Highlights

• Manual On / Off. Click the menu-bar Duck to keep the Mac awake now, then
  click again to let it sleep normally.
• Auto mode. Trusted local Activity Sources can prove work is still alive.
  StayUp keeps the Mac awake while selected sources are active, waits through a
  grace period when they go quiet, then stands down.
• Battery + lid-closed Helper path. The hard case uses a readable root
  helper daemon registered through SMAppService to run
  pmset disablesleep on/off. No sudoers installer.
• Layered sleep prevention. StayUp combines Apple's caffeinate, IOKit
  assertions, a closed-lid assertion, optional virtual display support for
  remote GUI workflows, and the Helper path.
• Virtual display for remote GUI availability. If no real external monitor
  exists, StayUp can create a small virtual display so screen-sharing style
  tools have a display-shaped surface. This is not the hard sleep guarantee;
  the Helper owns that.
• Don't Die. StayUp can disengage before low battery so the Mac is not kept
  awake forever.
• Walking Duck. On Apple Silicon MacBooks with the right motion hardware,
  the menu-bar Duck walks when you carry the Mac. The sensor is local-only and
  only active while StayUp is engaged.
• First-launch setup. The welcome window surfaces Launch at Login, Helper
  setup, and optional update checks.
• Settings. General, Advanced, Walk, Look, and About tabs keep the controls
  compact.
• Sparkle updates. Signed update checks are opt-in or manually requested.
• No telemetry. No analytics, accounts, crash reporting, or normal-operation
  network calls.

Notes

• Direct-distribution only. The hard-case Helper and private virtual display
  API do not fit the Mac App Store sandbox.
• The Helper is required for the battery + lid-closed promise.
• Do not keep a closed MacBook running in a bag, drawer, or other poorly
  ventilated place.
• Code is MIT licensed. The StayUp name and Duck artwork are reserved.