Phase 0: menu-bar scaffold, permissions, backend health check

Native SwiftUI menu-bar app (LSUIElement, macOS 13+), generated from project.yml
via XcodeGen. Includes:
- PermissionsManager (Microphone / Screen Recording / Accessibility) + UI
- SparkControlHealth: GET /api/status over self-signed TLS (InsecureTrustDelegate)
- AppSettings persistence (host, TLS-skip, output folder, adapter toggles)
- Menu-bar panel + Settings, app sandbox & hardened runtime off (LAN tool)

Ten31Transcripts/App/Ten31TranscriptsApp.swift

@@ -0,0 +1,28 @@
+import SwiftUI
+
+/// Menu-bar-only app entry point.
+///
+/// `LSUIElement` (set in Info.plist) keeps the app out of the Dock; the
+/// `MenuBarExtra` scene provides the status-bar item and its panel. Phase 0 only
+/// wires up permissions, settings, and a backend health check — no audio,
+/// capture, or call detection yet.
+@main
+struct Ten31TranscriptsApp: App {
+    @NSApplicationDelegateAdaptor(AppDelegate.self) private var appDelegate
+
+    @StateObject private var settings = AppSettings()
+    @StateObject private var permissions = PermissionsManager()
+    @StateObject private var health = SparkControlHealth()
+
+    var body: some Scene {
+        MenuBarExtra {
+            MenuBarView()
+                .environmentObject(settings)
+                .environmentObject(permissions)
+                .environmentObject(health)
+        } label: {
+            Image(systemName: "waveform.circle")
+        }
+        .menuBarExtraStyle(.window)
+    }
+}