Fix ghostty performance. Improve keyboard and input mode handling

README.md

@@ -28,7 +28,7 @@ The current Xcode target and bundle name are still `CommandNotch`, but the proje
 ## Features
 
 - Native macOS notch overlay with open and closed states.
-- Fast shell sessions powered by SwiftTerm and a local login shell.
+- Fast shell sessions powered by Ghostty by default, with SwiftTerm available as a fallback backend.
 - Multiple tabs with hotkeys for new, close, next, previous, and direct tab switching.
 - Workspace support, including shared workspaces across screens.
 - Multi-display awareness with per-screen assignment and presentation state.
@@ -82,6 +82,11 @@ DEVELOPER_DIR=/Applications/Xcode.app/Contents/Developer \
   xcodebuild build -project CommandNotch.xcodeproj -scheme CommandNotch -destination 'platform=macOS'
 ```
 
+Notes:
+
+- The Ghostty XCFramework and runtime resources are vendored in the repo, so there is no separate Ghostty install step.
+- If you want to force the legacy backend for troubleshooting, launch with `COMMANDNOTCH_TERMINAL_BACKEND=swiftterm`.
+
 ### Build a release `.dmg`
 
 Use `create-dmg` to build the styled Finder installer window with the usual drag-to-`Applications` layout.