SideScreen 0.5.0

SideScreen 0.5 adds the free MIT SideCursor backend and a separate blue agent pointer in the passive preview. Muse Link 1.2 exposes its move/click tools alongside regular Chrome, scoped CUA and optional Microsoft app/vision tools.

Fresh image pixels are bound to a native-corroborated CUA capture transform. Stale observations, moved/replaced windows, missing calibration and out-of-scope targets are refused. Supported controls prefer native/CUA background invocation; other client-area pointer events use bounded window messages within the same window/process. The human cursor is never moved by this backend.

Validation: 26 non-UI checks, 12 adapter checks, 61 CUA live checks, 42 installed Muse-proxy checks including real canvas movement/clicks and both preview markers, plus a repeated 32-check regular Chrome/native/WPF channel suite. Foreground/keyboard focus stayed intact during the tested actions. The release archive excludes test probes, state, screenshots, browser profiles and credentials.

App support remains limited. This is an original software-pointer backend, not a MouseMux driver clone, separate Windows input session or universal isolation. MouseMux actuation and remote Muse connectivity are not certified. CUA Driver and the virtual display driver are separately installed. Cold Chrome extension attachment may activate its own window; the guard detects and stops this event. Sign-in startup remains per-user; a reboot was not tested.