feat: integrate mobile template with backend, add /mobile path routing and Todo dashboard

mobile/eslint.config.js

@@ -0,0 +1,9 @@
+const { defineConfig } = require('eslint/config');
+const expoConfig = require('eslint-config-expo/flat');
+
+module.exports = defineConfig([
+  ...expoConfig,
+  {
+    ignores: ['dist/**', 'node_modules/**', '.expo/**'],
+  },
+]);