feat: add analytics summary API, dashboard page with stats grid, and blog post detail page.

src/app/(app)/dashboard/page.tsx

@@ -218,12 +218,13 @@ export default function DashboardPage() {
           // Calculate real stats
           const totalScans = data.reduce((sum: number, qr: QRCodeData) => sum + (qr.scans || 0), 0);
           const activeQRCodes = data.filter((qr: QRCodeData) => qr.status === 'ACTIVE').length;
-          const conversionRate = activeQRCodes > 0 ? Math.round((totalScans / (activeQRCodes * 100)) * 100) : 0;
+          // Calculate "Unique Rate" (Conversion)
+          const conversionRate = totalScans > 0 ? Math.round((data.reduce((acc: number, qr: any) => acc + (qr.uniqueScans || 0), 0) / totalScans) * 100) : 0;
 
           setStats({
             totalScans,
             activeQRCodes,
-            conversionRate: Math.min(conversionRate, 100), // Cap at 100%
+            conversionRate,
           });
         } else {
           // If not logged in, show zeros

src/app/(marketing)/blog/[slug]/page.tsx

@@ -2014,6 +2014,30 @@ export default function BlogPostPage({ params }: { params: { slug: string } }) {
                   <Button size="lg">Create QR Code Free</Button>
                 </Link>
               </div>
+
+              {/* Related Articles Section */}
+              <div className="mt-16">
+                <h2 className="text-2xl font-bold text-gray-900 mb-8">Related Articles</h2>
+                <div className="grid md:grid-cols-3 gap-6">
+                  {Object.values(blogPosts)
+                    .filter((p) => p.slug !== post.slug)
+                    .slice(0, 3)
+                    .map((relatedPost) => (
+                      <Link
+                        key={relatedPost.slug}
+                        href={`/blog/${relatedPost.slug}`}
+                        className="group block bg-gray-50 rounded-xl p-6 hover:bg-gray-100 transition-colors"
+                      >
+                        <Badge variant="default" className="mb-3">{relatedPost.category}</Badge>
+                        <h3 className="font-semibold text-gray-900 group-hover:text-primary-600 transition-colors mb-2 line-clamp-2">
+                          {relatedPost.title}
+                        </h3>
+                        <p className="text-sm text-gray-600 line-clamp-2">{relatedPost.excerpt}</p>
+                        <span className="text-sm text-primary-600 mt-3 inline-block">Read more →</span>
+                      </Link>
+                    ))}
+                </div>
+              </div>
             </article>
           </div>
         </div>

src/app/api/analytics/summary/route.ts

@@ -140,7 +140,16 @@ export async function GET(request: NextRequest) {
 
     // Calculate trends
     const scansTrend = calculateTrend(totalScans, previousTotalScans);
-    const avgScansTrend = calculateTrend(avgScansPerQR, previousAvgScansPerQR);
+
+    // New Conversion Rate Logic: (Unique Scans / Total Scans) * 100
+    // This represents "Engagement Efficiency" - how many scans are from fresh users
+    const currentConversion = totalScans > 0 ? Math.round((uniqueScans / totalScans) * 100) : 0;
+
+    const previousConversion = previousTotalScans > 0
+      ? Math.round((previousUniqueScans / previousTotalScans) * 100)
+      : 0;
+
+    const avgScansTrend = calculateTrend(currentConversion, previousConversion);
 
     // Device stats
     const deviceStats = qrCodes.flatMap(qr => qr.scans)
@@ -172,7 +181,7 @@ export async function GET(request: NextRequest) {
       }, {} as Record<string, number>);
 
     const topCountry = Object.entries(countryStats)
-      .sort(([,a], [,b]) => b - a)[0];
+      .sort(([, a], [, b]) => b - a)[0];
 
     // Daily scan counts for chart (current period)
     const dailyScans = qrCodes.flatMap(qr => qr.scans).reduce((acc, scan) => {
@@ -215,7 +224,7 @@ export async function GET(request: NextRequest) {
       summary: {
         totalScans,
         uniqueScans,
-        avgScansPerQR,
+        avgScansPerQR: currentConversion, // Now sending Unique Rate instead of Avg per QR
         mobilePercentage,
         topCountry: topCountry ? topCountry[0] : 'N/A',
         topCountryPercentage: topCountry && totalScans > 0
@@ -228,7 +237,7 @@ export async function GET(request: NextRequest) {
       },
       deviceStats,
       countryStats: Object.entries(countryStats)
-        .sort(([,a], [,b]) => b - a)
+        .sort(([, a], [, b]) => b - a)
         .slice(0, 10)
         .map(([country, count]) => {
           const previousCount = previousCountryStats[country] || 0;

src/components/dashboard/StatsGrid.tsx

@@ -67,9 +67,9 @@ export const StatsGrid: React.FC<StatsGridProps> = ({ stats, trends }) => {
       ),
     },
     {
-      title: t('dashboard.stats.conversion_rate'),
+      title: 'Unique Scan Rate',
       value: `${stats.conversionRate}%`,
-      change: stats.totalScans > 0 ? `${stats.conversionRate}% rate` : 'No scans yet',
+      change: stats.totalScans > 0 ? `${stats.conversionRate}% new users` : 'No scans yet',
       changeType: stats.conversionRate > 0 ? 'positive' : 'neutral' as 'positive' | 'negative' | 'neutral',
       icon: (
         <svg className="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
@@ -88,8 +88,7 @@ export const StatsGrid: React.FC<StatsGridProps> = ({ stats, trends }) => {
               <div>
                 <p className="text-sm text-gray-600 mb-1">{card.title}</p>
                 <p className="text-2xl font-bold text-gray-900">{card.value}</p>
-                <p className={`text-sm mt-2 ${
-                  card.changeType === 'positive' ? 'text-success-600' :
+                <p className={`text-sm mt-2 ${card.changeType === 'positive' ? 'text-success-600' :
                   card.changeType === 'negative' ? 'text-red-600' :
                     'text-gray-500'
                   }`}>