Release 1.8.0

- Real Settings (Cmd+,) window via PreferencesView, hosting the pure
  @AppStorage-backed defaults that used to live in the main window's
  "General Settings" panel. Both windows share the same live values since
  they're backed by the same UserDefaults keys.
- Menu bar icon reflects idle/syncing/error state; dropdown shows last-sync
  time/result and whether auto-sync is armed, sourced from the same
  lastRunAtISO/lastRunOK/lastRunSummary keys --status reads.
- ContentView.swift split from ~2000 lines into CalendarsSectionView,
  RoutesSectionView, ScheduleSectionView, LogSectionView + a small shared
  CalendarDisplay.swift. View-layer extraction only — state ownership and
  settings persistence deliberately left alone.
- Fixed a latent revert-on-relaunch bug caught while building the Settings
  window: moving preference controls out of ContentView meant they no longer
  re-triggered saveSettingsToDefaults(), so settings.v2 could go stale and
  the next launch would silently revert a just-changed preference via the
  shared applySnapshot path. Split launch-time restore (routes + selection
  only) from Import's full restore.

All 47 unit tests pass.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

BusyMirror/LogSectionView.swift

@@ -0,0 +1,16 @@
+import SwiftUI
+
+/// Read-only activity log viewer — extracted from ContentView.
+struct LogSectionView: View {
+    let logText: String
+
+    var body: some View {
+        TextEditor(text: Binding(get: { logText }, set: { _ in }))
+            .font(.system(.body, design: .monospaced))
+            .frame(minHeight: 180)
+            .overlay(
+                RoundedRectangle(cornerRadius: 10, style: .continuous)
+                    .stroke(Color.secondary.opacity(0.22))
+            )
+    }
+}