feat(mobile): Add field app with date range navigation

- Add React Native Expo field app for mobile staff
- Use main /appointments/ endpoint with date range support
- Add X-Business-Subdomain header for tenant context
- Support day/week view navigation
- Remove WebSocket console logging from frontend
- Update AppointmentStatus type to include all backend statuses
- Add responsive status legend to scheduler header

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

mobile/field-app/app.json

@@ -0,0 +1,58 @@
+{
+  "expo": {
+    "name": "SmoothSchedule Field",
+    "slug": "smoothschedule-field-app",
+    "version": "1.0.0",
+    "orientation": "portrait",
+    "icon": "./assets/icon.png",
+    "scheme": "smoothschedule-field",
+    "userInterfaceStyle": "light",
+    "splash": {
+      "image": "./assets/splash.png",
+      "resizeMode": "contain",
+      "backgroundColor": "#2563eb"
+    },
+    "assetBundlePatterns": [
+      "**/*"
+    ],
+    "ios": {
+      "supportsTablet": false,
+      "bundleIdentifier": "com.smoothschedule.field",
+      "infoPlist": {
+        "NSLocationWhenInUseUsageDescription": "We need your location to show your position on the map and update customers about your arrival.",
+        "NSLocationAlwaysAndWhenInUseUsageDescription": "We need your location in the background to update customers about your arrival while you're driving.",
+        "UIBackgroundModes": [
+          "location"
+        ]
+      }
+    },
+    "android": {
+      "adaptiveIcon": {
+        "foregroundImage": "./assets/adaptive-icon.png",
+        "backgroundColor": "#2563eb"
+      },
+      "package": "com.smoothschedule.field",
+      "permissions": [
+        "ACCESS_COARSE_LOCATION",
+        "ACCESS_FINE_LOCATION",
+        "ACCESS_BACKGROUND_LOCATION"
+      ],
+      "usesCleartextTraffic": true
+    },
+    "plugins": [
+      "expo-router",
+      "expo-secure-store",
+      [
+        "expo-location",
+        {
+          "locationAlwaysAndWhenInUsePermission": "Allow SmoothSchedule Field to use your location to update customers about your arrival."
+        }
+      ],
+      "expo-asset",
+      "expo-font"
+    ],
+    "experiments": {
+      "typedRoutes": true
+    }
+  }
+}