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/integration/console-monitoring/error-tracking.spec.js

@@ -5,16 +5,15 @@
  */
 
 import { test, expect } from '@playwright/test';
-import { 
-  authenticateWithRealCredentials, 
+import {
+  authenticateWithRealCredentials,
   selectCompany,
   REAL_CREDENTIALS
 } from '../../utils/real-auth.js';
-import { 
+import {
   setupConsoleCapture,
   ErrorClassifier,
-  generateErrorReport,
-  assertNoCriticalErrors
+  generateErrorReport
 } from '../../utils/console-monitor.js';
 
 test.describe('Console Error Pattern Analysis', () => {
@@ -173,7 +172,7 @@ test.describe('Console Error Pattern Analysis', () => {
     // Analyze recurring patterns
     console.log('🔍 Error Frequency Analysis:');
     const recurringIssues = Object.entries(errorFrequencies)
-      .filter(([pattern, count]) => count > 2)
+      .filter(([_pattern, count]) => count > 2)
       .sort((a, b) => b[1] - a[1]);
     
     if (recurringIssues.length > 0) {