feat(14): Add Star on GitHub prompt for new users

- Add dismissible "Star on GitHub" card in About section
- Shows for new users, remembers dismissal in localStorage
- Accent-colored design with star icon
- Links to github.com/jhd3197/ServerKit
- Mobile responsive layout

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/src/pages/Settings.jsx

@@ -3,7 +3,7 @@ import { useAuth } from '../contexts/AuthContext';
 import api from '../services/api';
 import UsersTab from '../components/settings/UsersTab';
 import AuditLogTab from '../components/settings/AuditLogTab';
-import { Github, FileText, HelpCircle, MessageSquare, Bug, Check, Layers, Download, CheckCircle, RefreshCw, ExternalLink } from 'lucide-react';
+import { Github, FileText, HelpCircle, MessageSquare, Bug, Check, Layers, Download, CheckCircle, RefreshCw, ExternalLink, Star, X } from 'lucide-react';
 
 const Settings = () => {
     const [activeTab, setActiveTab] = useState('profile');
@@ -1647,10 +1647,15 @@ const SystemInfo = () => {
     );
 };
 
+const STAR_PROMPT_KEY = 'serverkit-star-prompt-dismissed';
+
 const AboutSection = () => {
     const [version, setVersion] = useState('...');
     const [updateInfo, setUpdateInfo] = useState(null);
     const [checkingUpdate, setCheckingUpdate] = useState(false);
+    const [showStarPrompt, setShowStarPrompt] = useState(() => {
+        return localStorage.getItem(STAR_PROMPT_KEY) !== 'true';
+    });
 
     useEffect(() => {
         const fetchVersion = async () => {
@@ -1664,6 +1669,11 @@ const AboutSection = () => {
         fetchVersion();
     }, []);
 
+    const dismissStarPrompt = () => {
+        setShowStarPrompt(false);
+        localStorage.setItem(STAR_PROMPT_KEY, 'true');
+    };
+
     const checkForUpdate = async () => {
         setCheckingUpdate(true);
         try {
@@ -1733,6 +1743,30 @@ const AboutSection = () => {
                 </div>
             </div>
 
+            {showStarPrompt && (
+                <div className="star-prompt-card">
+                    <button className="dismiss-btn" onClick={dismissStarPrompt} title="Dismiss">
+                        <X size={16} />
+                    </button>
+                    <div className="star-icon">
+                        <Star size={24} />
+                    </div>
+                    <div className="star-content">
+                        <h4>Enjoying ServerKit?</h4>
+                        <p>If you find ServerKit useful, consider starring the repository on GitHub. It helps others discover the project!</p>
+                        <a
+                            href="https://github.com/jhd3197/ServerKit"
+                            target="_blank"
+                            rel="noopener noreferrer"
+                            className="btn btn-accent"
+                        >
+                            <Star size={16} />
+                            Star on GitHub
+                        </a>
+                    </div>
+                </div>
+            )}
+
             <div className="settings-card">
                 <h3>Features</h3>
                 <ul className="feature-list">

frontend/src/styles/pages/_settings.less

@@ -660,6 +660,81 @@
     to { transform: rotate(360deg); }
 }
 
+// Star Prompt Card
+.star-prompt-card {
+    position: relative;
+    background: linear-gradient(135deg, @accent-glow 0%, fade(@accent-primary, 8%) 100%);
+    border: 1px solid fade(@accent-primary, 30%);
+    border-radius: @radius-lg;
+    padding: @space-6;
+    display: flex;
+    align-items: flex-start;
+    gap: @space-4;
+
+    .dismiss-btn {
+        position: absolute;
+        top: @space-3;
+        right: @space-3;
+        background: none;
+        border: none;
+        color: @text-tertiary;
+        cursor: pointer;
+        padding: @space-1;
+        border-radius: @radius-sm;
+        transition: all @transition-fast;
+
+        &:hover {
+            background: @bg-hover;
+            color: @text-primary;
+        }
+    }
+
+    .star-icon {
+        flex-shrink: 0;
+        width: 48px;
+        height: 48px;
+        background: linear-gradient(135deg, @warning 0%, darken(@warning, 10%) 100%);
+        border-radius: @radius-lg;
+        display: flex;
+        align-items: center;
+        justify-content: center;
+        color: white;
+    }
+
+    .star-content {
+        flex: 1;
+        padding-right: @space-6;
+
+        h4 {
+            margin: 0 0 @space-2;
+            font-size: @font-size-md;
+            font-weight: @font-weight-semibold;
+        }
+
+        p {
+            margin: 0 0 @space-4;
+            font-size: @font-size-sm;
+            color: @text-secondary;
+            line-height: @line-height-relaxed;
+        }
+
+        .btn {
+            display: inline-flex;
+            align-items: center;
+            gap: @space-2;
+        }
+    }
+
+    @media (max-width: @breakpoint-sm) {
+        flex-direction: column;
+        text-align: center;
+
+        .star-content {
+            padding-right: 0;
+        }
+    }
+}
+
 // Feature List
 .feature-list {
     list-style: none;