feat: remove react-query dependency and simplify App component

pnpm-lock.yaml

@@ -23,9 +23,6 @@ importers:
       '@react-router/serve':
         specifier: ^7.1.3
         version: 7.1.3(react-router@7.1.3(react-dom@19.0.0(react@19.0.0))(react@19.0.0))(typescript@5.7.3)
-      '@tanstack/react-query':
-        specifier: ^5.66.9
-        version: 5.66.9(react@19.0.0)
       chart.js:
         specifier: ^4.4.8
         version: 4.4.8
@@ -1369,14 +1366,6 @@ packages:
     peerDependencies:
       eslint: ^8.57.0 || ^9.0.0
 
-  '@tanstack/query-core@5.66.4':
-    resolution: {integrity: sha512-skM/gzNX4shPkqmdTCSoHtJAPMTtmIJNS0hE+xwTTUVYwezArCT34NMermABmBVUg5Ls5aiUXEDXfqwR1oVkcA==}
-
-  '@tanstack/react-query@5.66.9':
-    resolution: {integrity: sha512-NRI02PHJsP5y2gAuWKP+awamTIBFBSKMnO6UVzi03GTclmHHHInH5UzVgzi5tpu4+FmGfsdT7Umqegobtsp23A==}
-    peerDependencies:
-      react: ^18 || ^19
-
   '@tanstack/react-virtual@3.13.0':
     resolution: {integrity: sha512-CchF0NlLIowiM2GxtsoKBkXA4uqSnY2KvnXo+kyUFD4a4ll6+J0qzoRsUPMwXV/H26lRsxgJIr/YmjYum2oEjg==}
     peerDependencies:
@@ -5524,13 +5513,6 @@ snapshots:
       - supports-color
       - typescript
 
-  '@tanstack/query-core@5.66.4': {}
-
-  '@tanstack/react-query@5.66.9(react@19.0.0)':
-    dependencies:
-      '@tanstack/query-core': 5.66.4
-      react: 19.0.0
-
   '@tanstack/react-virtual@3.13.0(react-dom@19.0.0(react@19.0.0))(react@19.0.0)':
     dependencies:
       '@tanstack/virtual-core': 3.13.0