router and enable back button

pnpm-lock.yaml

@@ -90,6 +90,9 @@ importers:
       react-icons:
         specifier: ^5.5.0
         version: 5.5.0(react@19.2.4)
+      react-router:
+        specifier: ^7.13.1
+        version: 7.13.1(react-dom@19.2.4(react@19.2.4))(react@19.2.4)
       wanakana:
         specifier: ^5.3.1
         version: 5.3.1
@@ -1442,6 +1445,16 @@ packages:
     resolution: {integrity: sha512-z6F7K9bV85EfseRCp2bzrpyQ0Gkw1uLoCel9XBVWPg/TjRj94SkJzUTGfOa4bs7iJvBWtQG0Wq7wnI0syw3EBQ==}
     engines: {node: '>=0.10.0'}
 
+  react-router@7.13.1:
+    resolution: {integrity: sha512-td+xP4X2/6BJvZoX6xw++A2DdEi++YypA69bJUV5oVvqf6/9/9nNlD70YO1e9d3MyamJEBQFEzk6mbfDYbqrSA==}
+    engines: {node: '>=20.0.0'}
+    peerDependencies:
+      react: '>=18'
+      react-dom: '>=18'
+    peerDependenciesMeta:
+      react-dom:
+        optional: true
+
   react@19.2.4:
     resolution: {integrity: sha512-9nfp2hYpCwOjAN+8TZFGhtWEwgvWHXqESH8qT89AT/lWklpLON22Lc8pEtnpsZz7VmawabSU0gCjnj8aC0euHQ==}
     engines: {node: '>=0.10.0'}
@@ -3321,6 +3334,14 @@ snapshots:
 
   react-refresh@0.17.0: {}
 
+  react-router@7.13.1(react-dom@19.2.4(react@19.2.4))(react@19.2.4):
+    dependencies:
+      cookie: 1.1.1
+      react: 19.2.4
+      set-cookie-parser: 2.7.2
+    optionalDependencies:
+      react-dom: 19.2.4(react@19.2.4)
+
   react@19.2.4: {}
 
   real-require@0.2.0: {}