Add CI/CD pipeline, feedback modal, Atlas qualys_id fallback, and health endpoint

- Rewrite .gitlab-ci.yml with proper stages, blocking tests, staging
  environment on dev box, and SSH-based production deploy to 71.85.90.6
- Add POST /api/health endpoint for pipeline verification
- Add POST /atlas/hosts/:hostId/refresh-cache for Atlas cache staleness
- AtlasSlideOutPanel: auto-resolve qualys_id from Atlas vulnerabilities,
  prefer qualys_id over active_host_findings_id, retry on failure
- Add FeedbackModal component with bug report button in header and
  feature request in UserMenu, creates GitLab issues via /api/feedback
- Fix all frontend test failures (ESM transforms, TextDecoder polyfill,
  fast-check resolution, App.test.js boilerplate replacement)
- Fix root package.json test script to run jest
- Add deploy/ directory with staging systemd service and setup script

frontend/src/components/UserMenu.js

@@ -1,5 +1,5 @@
 import React, { useState, useRef, useEffect } from 'react';
-import { User, LogOut, ChevronDown, Shield, Clock } from 'lucide-react';
+import { User, LogOut, ChevronDown, Shield, Clock, Lightbulb } from 'lucide-react';
 import { useAuth } from '../contexts/AuthContext';
 import UserProfilePanel from './UserProfilePanel';
 
@@ -151,7 +151,7 @@ function getGroupBadgeStyle(group) {
     };
 }
 
-export default function UserMenu({ onManageUsers, onAuditLog }) {
+export default function UserMenu({ onManageUsers, onAuditLog, onFeatureRequest }) {
     const { user, logout, isAdmin } = useAuth();
     const [isOpen, setIsOpen] = useState(false);
     const [buttonHovered, setButtonHovered] = useState(false);
@@ -281,6 +281,19 @@ export default function UserMenu({ onManageUsers, onAuditLog }) {
                         </>
                     )}
 
+                    <button
+                        onClick={() => { setIsOpen(false); if (onFeatureRequest) onFeatureRequest(); }}
+                        onMouseEnter={() => setHoveredItem('feature')}
+                        onMouseLeave={() => setHoveredItem(null)}
+                        style={{
+                            ...STYLES.menuItem,
+                            ...(hoveredItem === 'feature' ? STYLES.menuItemHover : {}),
+                        }}
+                    >
+                        <Lightbulb size={16} />
+                        Feature Request
+                    </button>
+
                     <button
                         onClick={handleLogout}
                         onMouseEnter={() => setHoveredItem('signout')}