computer-use

This skill provides the computer_use_* action tools for controlling a connected desktop. CU tools run through the main agent loop via HostCuProxy. The skill is internally preactivated for conversations with a connected desktop client. Tools in this skill are proxy tools. Execution is forwarded to a connected desktop client and is never handled locally by the assistant. ## Window-scoped observation (macOS) `computer_use_observe` accepts optional `capture_window_id`, a native macOS CGWindowID (not a browser tab ID or accessibility element ID). Obtain the ID from a current native window inventory before using it; never guess one. The native helper captures that window and its accessibility tree without including secondary windows, even when another app covers the selected window. A missing window must not be replaced with a desktop capture. This is a **single observation**, not a session-wide privacy boundary: normal click/type/scroll and other action tools still return their normal desktop observations. Do not promise app-only capture for a whole control session. The desktop must explicitly advertise `host_cu_window_capture` support on its connection; the daemon rejects older or unsupported clients before requesting any capture. Other desktop platforms reject this option. The screenshot is window-relative, while action coordinates are screen points; do not scale it using full-display dimensions. Prefer accessibility element IDs and ensure the intended window is focused be...