Cross-platform (macOS/Windows/Linux) tray app: Cmd/Ctrl+Shift+Space spotlight, quick actions over the clipboard (ask/summarize/explain copy; rewrite/translate/ fix paste-back via synthesized paste), streaming over published @hanzo/ai@0.2.0 (66 tests). Native installers = per-OS CI job (tauri build), never built locally. Wave 4 dev/ambient (TS-tractable) complete.