add back button functionality

pubspec.lock

@@ -83,6 +83,19 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  flutter_web_plugins:
+    dependency: transitive
+    description: flutter
+    source: sdk
+    version: "0.0.0"
+  go_router:
+    dependency: "direct main"
+    description:
+      name: go_router
+      sha256: c489908a54ce2131f1d1b7cc631af9c1a06fac5ca7c449e959192089f9489431
+      url: "https://pub.dev"
+    source: hosted
+    version: "16.0.0"
   http:
     dependency: "direct main"
     description:
@@ -131,6 +144,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "6.0.0"
+  logging:
+    dependency: transitive
+    description:
+      name: logging
+      sha256: c8245ada5f1717ed44271ed1c26b8ce85ca3228fd2ffdb75468ab01979309d61
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.3.0"
   matcher:
     dependency: transitive
     description:
@@ -266,4 +287,4 @@ packages:
     version: "1.1.1"
 sdks:
   dart: ">=3.8.1 <4.0.0"
-  flutter: ">=3.18.0-18.0.pre.54"
+  flutter: ">=3.27.0"