remove dead ContentView.swift and IcedViewportRepresentable, relocate Notification.Name extensions

src/AppDelegate.swift

@@ -3,6 +3,16 @@ import Combine
 import SwiftUI
 import UniformTypeIdentifiers
 
+extension Notification.Name {
+    static let focusEditor = Notification.Name("focusEditor")
+    static let focusTitle = Notification.Name("focusTitle")
+    static let formatDocument = Notification.Name("formatDocument")
+    static let insertTable = Notification.Name("insertTable")
+    static let boldSelection = Notification.Name("boldSelection")
+    static let italicizeSelection = Notification.Name("italicizeSelection")
+    static let smartEval = Notification.Name("smartEval")
+}
+
 class WindowController {
     let window: NSWindow
     let appState: AppState

src/ContentView.swift

@@ -1,26 +0,0 @@
-import SwiftUI
-
-struct ContentView: View {
-    @ObservedObject var state: AppState
-    @State private var themeVersion: Int = 0
-
-    var body: some View {
-        let _ = themeVersion
-        IcedViewportRepresentable()
-            .frame(minWidth: 700, minHeight: 400)
-            .background(Color(ns: Theme.current.base))
-            .onReceive(NotificationCenter.default.publisher(for: .settingsChanged)) { _ in
-                themeVersion += 1
-            }
-    }
-}
-
-extension Notification.Name {
-    static let focusEditor = Notification.Name("focusEditor")
-    static let focusTitle = Notification.Name("focusTitle")
-    static let formatDocument = Notification.Name("formatDocument")
-    static let insertTable = Notification.Name("insertTable")
-    static let boldSelection = Notification.Name("boldSelection")
-    static let italicizeSelection = Notification.Name("italicizeSelection")
-    static let smartEval = Notification.Name("smartEval")
-}

src/IcedViewportView.swift

@@ -171,13 +171,3 @@ class IcedViewportView: NSView {
         viewport_key_event(h, UInt32(event.keyCode), UInt32(event.modifierFlags.rawValue), true, nil)
     }
 }
-
-// MARK: - SwiftUI Bridge
-
-struct IcedViewportRepresentable: NSViewRepresentable {
-    func makeNSView(context: Context) -> IcedViewportView {
-        IcedViewportView(frame: .zero)
-    }
-
-    func updateNSView(_ nsView: IcedViewportView, context: Context) {}
-}