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/tests/e2e/debugging-real-issues.spec.js

@@ -227,7 +227,7 @@ test.describe('🔍 ROA2WEB Real Issues Debugging Suite', () => {
       );
       
       let node;
-      while (node = walker.nextNode()) {
+      while ((node = walker.nextNode())) {
         const text = node.textContent.trim();
         if (text.toLowerCase().includes('eroare') || 
             text.toLowerCase().includes('error') ||
@@ -298,7 +298,7 @@ test.describe('🔍 ROA2WEB Real Issues Debugging Suite', () => {
     }
   });
 
-  test.afterEach(async ({ page }) => {
+  test.afterEach(async () => {
     // Generate final report
     console.log('\n📋 === FINAL TEST REPORT ===');
     console.log(`Total Network Requests: ${networkRequests.length}`);