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/assets/css/components/forms.css

@@ -33,7 +33,7 @@
 }
 
 .form-label.required::after {
-  content: ' *';
+  content: " *";
   color: var(--color-error);
 }
 
@@ -400,29 +400,29 @@
     flex-direction: column;
     gap: var(--space-md);
   }
-  
+
   .form-inline {
     flex-direction: column;
     align-items: stretch;
   }
-  
+
   .form-inline .form-group {
     min-width: auto;
   }
-  
+
   .form-actions {
     flex-direction: column;
   }
-  
+
   .form-actions-between {
     justify-content: center;
     flex-direction: column-reverse;
   }
-  
+
   .search-form {
     flex-direction: column;
   }
-  
+
   /* Ensure mobile-friendly touch targets */
   .form-input,
   .form-select,
@@ -430,7 +430,7 @@
     min-height: 44px;
     font-size: 16px; /* Prevents zoom on iOS */
   }
-  
+
   .form-check-input {
     width: 20px;
     height: 20px;
@@ -443,7 +443,7 @@
   .form-actions {
     display: none;
   }
-  
+
   .form-input,
   .form-select,
   .form-textarea {
@@ -453,8 +453,8 @@
     background: transparent;
     padding: var(--space-xs) 0;
   }
-  
+
   .form-label {
     font-weight: bold;
   }
-}
+}