Screen annotations for Grok CLI

CLI agents are fast when the task is precise. UI feedback still collapses into long typed descriptions unless you mark the screen first.

1. Hotkey Casso over the UI you care about.
2. Draw numbered regions and optional notes.
3. Send to write the local session and clipboard prompt.
4. Paste into Grok CLI with the image reference and [n] notes.

• Same desktop gesture as Claude Code and Codex - no Grok-only lock-in.
• Numbered multi-region feedback in one capture.
• Local-only sessions until you choose to paste.
• 7-day free trial, then $29 one-time personal license.

If you bounce between Grok CLI and other agents in a week, an agent-agnostic overlay saves relearning. Casso's job is the map; the CLI agent's job is the edit.

For multi-step visual polish, re-annotate only what is still wrong after each pass. Fresh numbers beat a stale full-desktop shot with arrows from three turns ago.