Add watchOS companion app

.gitignore

@@ -22,3 +22,9 @@ dist/
 *.ipa
 *.dSYM.zip
 *.dSYM
+
+## local-only spec override
+project.local.yml
+
+## SwiftPM local build artifacts
+Packages/*/.build/

.mcp.json

@@ -0,0 +1,8 @@
+{
+  "mcpServers": {
+    "xcode": {
+      "command": "xcrun",
+      "args": ["mcpbridge"]
+    }
+  }
+}

Apps/Phone/NightcapPhoneApp.swift

@@ -0,0 +1,17 @@
+import ComposableArchitecture
+import NightcapCompanionUI
+import NightcapDomain
+import SwiftUI
+
+@main
+struct NightcapPhoneApp: App {
+    @State private var store = Store(initialState: CompanionFeature.State()) {
+        CompanionFeature()
+    }
+
+    var body: some Scene {
+        WindowGroup {
+            CompanionView(store: store)
+        }
+    }
+}

Apps/Watch/NightcapWatchApp.swift

@@ -0,0 +1,17 @@
+import ComposableArchitecture
+import NightcapCompanionUI
+import NightcapDomain
+import SwiftUI
+
+@main
+struct NightcapWatchApp: App {
+    @State private var store = Store(initialState: CompanionFeature.State()) {
+        CompanionFeature()
+    }
+
+    var body: some Scene {
+        WindowGroup {
+            CompanionView(store: store)
+        }
+    }
+}

Nightcap/NightcapApp.swift

@@ -1,4 +1,7 @@
 import ComposableArchitecture
+import NightcapClients
+import NightcapDomain
+import NightcapUI
 import SwiftUI
 
 @main