Added: fully working signin/signup system with routing

frontend/package.json

@@ -1,7 +1,7 @@
 {
   "name": "deguapp",
   "version": "1.0.0",
-  "main": "node_modules/expo/AppEntry.js",
+  "main": "expo-router/entry",
   "scripts": {
     "start": "expo start",
     "android": "expo start --android",
@@ -9,13 +9,22 @@
     "web": "expo start --web"
   },
   "dependencies": {
+    "@expo/metro-runtime": "~3.1.3",
+    "@react-native-async-storage/async-storage": "^1.23.1",
+    "@types/react": "~18.2.45",
+    "axios": "^1.6.8",
     "expo": "~50.0.17",
+    "expo-constants": "~15.4.6",
+    "expo-linking": "~6.2.2",
+    "expo-router": "~3.4.10",
+    "expo-secure-store": "^12.8.1",
     "expo-status-bar": "~1.11.1",
     "react": "18.2.0",
-    "react-native": "0.73.6",
-    "react-native-web": "~0.19.6",
     "react-dom": "18.2.0",
-    "@expo/metro-runtime": "~3.1.3"
+    "react-native": "0.73.6",
+    "react-native-safe-area-context": "4.8.2",
+    "react-native-screens": "~3.29.0",
+    "react-native-web": "~0.19.6"
   },
   "devDependencies": {
     "@babel/core": "^7.20.0"