Add macOS window UI (ContentView) alongside menu bar

WindowGroup with resizable window (560×520 default): connection toolbar,
feed list with source icons + text selection + copy button, composer with
Cmd+Return shortcut. Both window and menu bar share the same store.
Removed LSUIElement — app now shows in Dock.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

ios/MacTetherApp/MacTetherApp.xcodeproj/project.pbxproj

@@ -9,6 +9,7 @@
 /* Begin PBXBuildFile section */
 		5AE0D6380E8D23C337DD0EB0 /* TetherKit in Frameworks */ = {isa = PBXBuildFile; productRef = 7A65056F38679ECD9498103E /* TetherKit */; };
 		9386BB2E2BBBCF245A7E605D /* MacTetherStore.swift in Sources */ = {isa = PBXBuildFile; fileRef = 010C4E8B3DC255487AE12A75 /* MacTetherStore.swift */; };
+		9617ED2468FED9FC38A37FD8 /* ContentView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 826E98E1B2A0C7A9AC4ED879 /* ContentView.swift */; };
 		CB143A31027F3CDB3CF5E894 /* MenuView.swift in Sources */ = {isa = PBXBuildFile; fileRef = BDF5D8809D1EC415AB35059B /* MenuView.swift */; };
 		E1F3C377CB6A58F791A83EAA /* MacTetherApp.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2EA7FA20BA797A0117F705E7 /* MacTetherApp.swift */; };
 /* End PBXBuildFile section */
@@ -19,6 +20,7 @@
 		6C53AB32EB02089B09AD31D6 /* MacTetherApp.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = MacTetherApp.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		6F7F88910D568FDE283249B4 /* TetherKit */ = {isa = PBXFileReference; lastKnownFileType = folder; name = TetherKit; path = ../TetherKit; sourceTree = SOURCE_ROOT; };
 		7D193BC76AB5D363A4CB1F6C /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist; path = Info.plist; sourceTree = "<group>"; };
+		826E98E1B2A0C7A9AC4ED879 /* ContentView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ContentView.swift; sourceTree = "<group>"; };
 		BDF5D8809D1EC415AB35059B /* MenuView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MenuView.swift; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
@@ -45,6 +47,7 @@
 		D08DCB1AE8C0173418D178ED /* Sources */ = {
 			isa = PBXGroup;
 			children = (
+				826E98E1B2A0C7A9AC4ED879 /* ContentView.swift */,
 				7D193BC76AB5D363A4CB1F6C /* Info.plist */,
 				2EA7FA20BA797A0117F705E7 /* MacTetherApp.swift */,
 				010C4E8B3DC255487AE12A75 /* MacTetherStore.swift */,
@@ -134,6 +137,7 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				9617ED2468FED9FC38A37FD8 /* ContentView.swift in Sources */,
 				E1F3C377CB6A58F791A83EAA /* MacTetherApp.swift in Sources */,
 				9386BB2E2BBBCF245A7E605D /* MacTetherStore.swift in Sources */,
 				CB143A31027F3CDB3CF5E894 /* MenuView.swift in Sources */,
@@ -277,7 +281,6 @@
 					"$(inherited)",
 					"@executable_path/../Frameworks",
 				);
-				LSUIElement = YES;
 				MARKETING_VERSION = 0.1.0;
 				PRODUCT_BUNDLE_IDENTIFIER = io.pecord.tether.mac;
 				SDKROOT = macosx;
@@ -298,7 +301,6 @@
 					"$(inherited)",
 					"@executable_path/../Frameworks",
 				);
-				LSUIElement = YES;
 				MARKETING_VERSION = 0.1.0;
 				PRODUCT_BUNDLE_IDENTIFIER = io.pecord.tether.mac;
 				SDKROOT = macosx;

ios/MacTetherApp/Sources/ContentView.swift

@@ -0,0 +1,134 @@
+import SwiftUI
+import TetherKit
+
+struct ContentView: View {
+    @Bindable var store: MacTetherStore
+    @State private var draft = ""
+
+    var body: some View {
+        VStack(spacing: 0) {
+            toolbar
+            Divider()
+            feedArea
+            Divider()
+            composer
+        }
+        .frame(minWidth: 480, minHeight: 400)
+        .task { store.connectIfSaved() }
+    }
+
+    // MARK: - Toolbar
+
+    private var toolbar: some View {
+        HStack(spacing: 10) {
+            Circle()
+                .fill(store.connected ? Color.green : Color.secondary.opacity(0.5))
+                .frame(width: 10, height: 10)
+                .animation(.easeInOut, value: store.connected)
+
+            if store.connected {
+                Text("Room \(store.room)").font(.callout).foregroundStyle(.secondary)
+            } else {
+                TextField("Server URL", text: $store.serverURL)
+                    .textFieldStyle(.roundedBorder)
+                    .frame(maxWidth: 240)
+            }
+
+            Spacer()
+
+            if let err = store.lastError, store.hasAttemptedConnect {
+                Text(err).font(.caption).foregroundStyle(.red)
+            }
+
+            Button(store.connected ? "Disconnect" : "Connect") {
+                store.connected ? store.disconnect() : store.connect()
+            }
+            .buttonStyle(.borderedProminent)
+            .tint(store.connected ? .secondary : .accentColor)
+        }
+        .padding(.horizontal, 16)
+        .padding(.vertical, 10)
+    }
+
+    // MARK: - Feed
+
+    private var feedArea: some View {
+        List(store.feed) { msg in
+            feedRow(msg)
+                .listRowSeparator(.hidden)
+                .listRowInsets(EdgeInsets(top: 4, leading: 12, bottom: 4, trailing: 12))
+        }
+        .listStyle(.plain)
+        .overlay {
+            if store.feed.isEmpty {
+                ContentUnavailableView(
+                    "No messages yet",
+                    systemImage: "link.circle",
+                    description: Text(store.connected
+                        ? "Copy anything on a connected device — it'll appear here."
+                        : "Connect to your tether server to start syncing.")
+                )
+            }
+        }
+    }
+
+    private func feedRow(_ msg: Message) -> some View {
+        HStack(alignment: .top, spacing: 10) {
+            VStack(alignment: .leading, spacing: 4) {
+                Text(msg.text ?? "")
+                    .font(.body)
+                    .lineLimit(6)
+                    .textSelection(.enabled)
+                HStack {
+                    Label(msg.source ?? "unknown", systemImage: sourceIcon(msg.source))
+                        .font(.caption).foregroundStyle(.secondary)
+                    Spacer()
+                    Text(msg.date, style: .time)
+                        .font(.caption).foregroundStyle(.secondary)
+                }
+            }
+            Button {
+                store.copyToPasteboard(msg)
+            } label: {
+                Image(systemName: "doc.on.doc")
+                    .foregroundStyle(.secondary)
+            }
+            .buttonStyle(.plain)
+            .help("Copy to clipboard")
+        }
+        .padding(10)
+        .background(Color.primary.opacity(0.04), in: RoundedRectangle(cornerRadius: 8))
+    }
+
+    private func sourceIcon(_ source: String?) -> String {
+        let s = source ?? ""
+        if s.contains("iphone") || s.contains("ios") { return "iphone" }
+        if s.contains("ipad") { return "ipad" }
+        if s.contains("macos") || s.contains("mac") { return "laptopcomputer" }
+        if s.contains("windows") { return "pc" }
+        return "desktopcomputer"
+    }
+
+    // MARK: - Composer
+
+    private var composer: some View {
+        HStack(spacing: 10) {
+            TextField("Type a message…", text: $draft, axis: .vertical)
+                .textFieldStyle(.roundedBorder)
+                .lineLimit(1...4)
+                .onSubmit {
+                    guard !draft.isEmpty else { return }
+                    store.send(draft); draft = ""
+                }
+            Button {
+                store.send(draft); draft = ""
+            } label: {
+                Image(systemName: "paperplane.fill")
+            }
+            .keyboardShortcut(.return, modifiers: .command)
+            .buttonStyle(.borderedProminent)
+            .disabled(!store.connected || draft.isEmpty)
+        }
+        .padding(12)
+    }
+}

ios/MacTetherApp/Sources/Info.plist

@@ -18,8 +18,6 @@
 	<string>1.0</string>
 	<key>CFBundleVersion</key>
 	<string>1</string>
-	<key>LSUIElement</key>
-	<true/>
 	<key>NSAppTransportSecurity</key>
 	<dict>
 		<key>NSAllowsLocalNetworking</key>

ios/MacTetherApp/Sources/MacTetherApp.swift

@@ -3,7 +3,14 @@ import SwiftUI
 @main
 struct MacTetherApp: App {
     @State private var store = MacTetherStore()
+
     var body: some Scene {
+        WindowGroup {
+            ContentView(store: store)
+        }
+        .windowResizability(.contentMinSize)
+        .defaultSize(width: 560, height: 520)
+
         MenuBarExtra("tether", systemImage: store.connected ? "link.circle.fill" : "link.circle") {
             MenuView(store: store)
                 .frame(width: 320)

ios/MacTetherApp/project.yml

@@ -25,15 +25,12 @@ targets:
         GENERATE_INFOPLIST_FILE: true
         DEVELOPMENT_TEAM: ""
         CODE_SIGN_STYLE: Automatic
-        # Hide from Dock — menu bar only
-        LSUIElement: true
       configs:
         Debug:
           INFOPLIST_KEY_NSAppTransportSecurity: ""
     info:
       path: Sources/Info.plist
       properties:
-        LSUIElement: true
         NSAppTransportSecurity:
           NSAllowsLocalNetworking: true
         NSLocalNetworkUsageDescription: "tether connects to your clipboard relay on the local network."