Yep. AI rewrote the whole thing.

Downterm/CommandNotch/Views/SettingsBindings.swift

@@ -0,0 +1,13 @@
+import SwiftUI
+
+@MainActor
+extension AppSettingsController {
+    func binding<Value>(_ keyPath: WritableKeyPath<AppSettings, Value>) -> Binding<Value> {
+        Binding(
+            get: { self.settings[keyPath: keyPath] },
+            set: { newValue in
+                self.update { $0[keyPath: keyPath] = newValue }
+            }
+        )
+    }
+}