tui-verify-change

Verify a change to Warp's headless TUI front-end (crates/warp_tui, and the cell-grid element library in crates/warpui_core/src/elements/tui) by running it and reading back the actual rendered screen.

The whole point: the TUI is a console program, so you can run it in a real terminal and read the actual rendered screen straight back. When tmux is available it's the ideal driver — you run the TUI in a tmux pane, drive it with tmux send-keys, and read the frame back with tmux capture-pane — but tmux is not required: if it isn't installed you can still run and observe the TUI directly (see If tmux isn't installed under Step 2). Either way you (the agent) see the actual screen text — no computer_use, no real display, no cloud screenshot agent, and no relying on a separate watcher's description of what it saw. (Contrast the GUI-only gui-onboarding-verification-skill, gui-integration-test, gui-integration-test-video, and the computer_use / verify-ui-change-in-cloud flow.) This is the fast, preferred way to confirm a TUI change end-to-end.