refactor(frontend): update test config and optimize components

- Update vitest config to use new test directory structure
- Optimize Dashboard, RoleManagement, UserManagement components
- Improve signature utility with better error handling
- Enhance component error handling and user feedback

gym-manage-web/vitest.config.optimized.ts

@@ -7,7 +7,7 @@ export default defineConfig({
   test: {
     globals: true,
     environment: 'jsdom',
-    setupFiles: ['./src/test/setup.ts'],
+    setupFiles: ['./src/__tests__/setup.ts'],
     pool: 'threads',
     poolOptions: {
       threads: {
@@ -17,7 +17,7 @@ export default defineConfig({
         useAtomics: true,
       },
     },
-    include: ['src/test/**/*.{test,spec}.{js,ts}'],
+    include: ['src/__tests__/**/*.{test,spec}.{js,ts}'],
     exclude: [
       'node_modules/',
       'dist/',
@@ -31,7 +31,7 @@ export default defineConfig({
       reporter: ['text', 'json', 'html', 'lcov'],
       exclude: [
         'node_modules/',
-        'src/test/',
+        'src/__tests__/',
         '**/*.d.ts',
         '**/*.config.*',
         '**/mockData',
@@ -65,7 +65,7 @@ export default defineConfig({
       enabled: true,
     },
     benchmark: {
-      include: ['src/test/**/*.{bench,benchmark}.{js,ts}'],
+      include: ['src/__tests__/**/*.{bench,benchmark}.{js,ts}'],
       exclude: ['node_modules/', 'dist/'],
     },
   },