feat: Frontend CSS refactoring and test improvements

Frontend:
- Refactored CSS architecture with new utility classes
- Updated dashboard components styling
- Improved responsive grid system
- Enhanced typography and variables
- Updated E2E and integration tests

Added:
- Claude Code slash commands for validation
- SSH tunnel and start test scripts

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

reports-app/frontend/src/services/api.js

@@ -38,9 +38,12 @@ apiService.interceptors.response.use(
       try {
         const refreshToken = localStorage.getItem("refresh_token");
         if (refreshToken) {
-          const response = await axios.post(import.meta.env.BASE_URL + "api/auth/refresh", {
-            refresh_token: refreshToken,
-          });
+          const response = await axios.post(
+            import.meta.env.BASE_URL + "api/auth/refresh",
+            {
+              refresh_token: refreshToken,
+            },
+          );
 
           const { access_token } = response.data;
           localStorage.setItem("access_token", access_token);
@@ -135,5 +138,4 @@ export const invoicesAPI = {
   },
 };
 
-
 export default apiService;

reports-app/frontend/src/services/index.js

@@ -1,6 +1 @@
-export {
-  apiService,
-  authAPI,
-  companiesAPI,
-  invoicesAPI,
-} from "./api";
+export { apiService, authAPI, companiesAPI, invoicesAPI } from "./api";