Release v6.5.1: Product Hunt Launch Day UI Updates

- Decorative Product Hunt announcement in terminal with rocket borders
- Product Hunt badge in viewer header with theme-aware switching
- Badge uses separate tracking URL for analytics

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

src/hooks/user-message-hook.ts

@@ -53,6 +53,23 @@ try {
   const now = new Date();
   const amaEndDate = new Date('2025-12-06T00:00:00Z'); // Dec 5, 2025 7pm EST
 
+  // Product Hunt launch announcement - expires Dec 5, 2025 12am EST (05:00 UTC)
+  const phLaunchEndDate = new Date('2025-12-05T05:00:00Z');
+  let productHuntAnnouncement = "";
+  if (now < phLaunchEndDate) {
+    productHuntAnnouncement = `
+
+🚀 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🚀
+
+   We launched on Product Hunt!
+   https://tinyurl.com/claude-mem-ph
+
+   ⭐ Your upvote means the world - thank you!
+
+🚀 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🚀
+`;
+  }
+
   let amaAnnouncement = "";
   if (now < amaEndDate) {
     // Check if we're during the live event (Dec 1-5, 5pm-7pm EST daily)
@@ -79,6 +96,7 @@ try {
     output +
     "\n\n💡 New! Wrap all or part of any message with <private> ... </private> to prevent storing sensitive information in your observation history.\n" +
     "\n💬 Community https://discord.gg/J4wttp9vDu" +
+    productHuntAnnouncement +
     amaAnnouncement +
     `\n📺 Watch live in browser http://localhost:${port}/\n`
   );