chore: initialize Expo SDK 55 project with TypeScript

React Native + Expo Router setup with strict TypeScript,
path aliases, and dark-first configuration.

app.json

@@ -0,0 +1,56 @@
+{
+  "expo": {
+    "name": "Lively",
+    "slug": "lively",
+    "version": "1.0.0",
+    "orientation": "portrait",
+    "icon": "./assets/icon.png",
+    "userInterfaceStyle": "dark",
+    "scheme": "lively",
+    "ios": {
+      "supportsTablet": true,
+      "bundleIdentifier": "com.lively.app",
+      "infoPlist": {
+        "NSPhotoLibraryUsageDescription": "Lively needs access to your photos to create animated wallpapers.",
+        "NSPhotoLibraryAddUsageDescription": "Lively needs to save Live Photos to your library.",
+        "NSMotionUsageDescription": "Lively uses motion data for parallax wallpaper effects."
+      }
+    },
+    "android": {
+      "package": "com.lively.app",
+      "adaptiveIcon": {
+        "backgroundColor": "#0A0A0F",
+        "foregroundImage": "./assets/android-icon-foreground.png",
+        "backgroundImage": "./assets/android-icon-background.png",
+        "monochromeImage": "./assets/android-icon-monochrome.png"
+      },
+      "permissions": [
+        "android.permission.READ_MEDIA_IMAGES",
+        "android.permission.READ_EXTERNAL_STORAGE",
+        "android.permission.SET_WALLPAPER"
+      ]
+    },
+    "web": {
+      "favicon": "./assets/favicon.png",
+      "bundler": "metro"
+    },
+    "plugins": [
+      "expo-router",
+      "expo-status-bar",
+      [
+        "expo-media-library",
+        {
+          "photosPermission": "Lively needs access to your photos to create animated wallpapers.",
+          "savePhotosPermission": "Lively needs to save Live Photos to your library.",
+          "isAccessMediaLocationEnabled": true
+        }
+      ],
+      [
+        "expo-sensors",
+        {
+          "motionPermission": "Lively uses motion data for parallax wallpaper effects."
+        }
+      ]
+    ]
+  }
+}