Replace the customer app with Doormile CX

Book a pickup, track it to delivery — the rebuilt customer app.

- Design language from doormile-screens.html: brand #8F0F06, Manrope +
  Geist Mono (variable fonts), bordered cards instead of shadows, crimson
  brand headers, sliding tab indicator, mono for anything read digit by digit.
- lib/data (one live API implementation, plus a debug-only offline fake),
  lib/state, lib/ui (tokens, widgets, screens).
- 84 tests, plus a design snapshot harness that renders every screen with the
  real fonts: flutter test test/design_snapshot_test.dart --run-skipped
  --update-goldens

This replaces the previous app (pubspec 'doormile', app id
com.doormile.customer). That tree remains in history at 6c7d656; note its
android/app/google-services.json is not carried over, and the application id
here is in.doormile.customer.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

ios/Podfile.lock

@@ -0,0 +1,22 @@
+PODS:
+  - Flutter (1.0.0)
+  - flutter_secure_storage (6.0.0):
+    - Flutter
+
+DEPENDENCIES:
+  - Flutter (from `Flutter`)
+  - flutter_secure_storage (from `.symlinks/plugins/flutter_secure_storage/ios`)
+
+EXTERNAL SOURCES:
+  Flutter:
+    :path: Flutter
+  flutter_secure_storage:
+    :path: ".symlinks/plugins/flutter_secure_storage/ios"
+
+SPEC CHECKSUMS:
+  Flutter: 71a624a5bc0c04062bf19101d501e466baf2fb47
+  flutter_secure_storage: 1ed9476fba7e7a782b22888f956cce43e2c62f13
+
+PODFILE CHECKSUM: 3ba3a73b1b12adcf321a227a745625fe0888cc82
+
+COCOAPODS: 1.16.2