T08: Tab and F6 pass Ely's focus keys; each kitty flag reshapes only what it names; Cmd is Super; repeats and Command key-ups come from AppKit; IME commits stay UTF-8, as in kitty and Ghostty; key.zig out; the line rule reads every text file

Cargo.toml

@@ -30,6 +30,7 @@ rustix-openpty = "0.2"
 signal-hook = "0.4"
 
 [target.'cfg(target_os = "macos")'.dependencies]
+block = "0.1"
 objc = "0.2"
 
 [target.'cfg(target_os = "macos")'.dev-dependencies]