feat(analytics): complete Rybbit tracking integration

- Add Rybbit server-side tracking to analytics-server.ts for order completion and revenue
- Add trackNewsletterSignup to analytics.ts and wire up NewsletterSection
- Add cart tracking to CartDrawer (cart view, remove from cart)
- All ecommerce events now track to both OpenPanel and Rybbit

src/lib/analytics.ts

@@ -15,6 +15,7 @@ import {
   trackRybbitWishlistAdd,
   trackRybbitUserLogin,
   trackRybbitUserRegister,
+  trackRybbitNewsletterSignup,
 } from "@/lib/services/RybbitService";
 
 export function useAnalytics() {
@@ -109,6 +110,9 @@ export function useAnalytics() {
         case "user_register":
           trackRybbitUserRegister(openPanelData.method);
           break;
+        case "newsletter_signup":
+          trackRybbitNewsletterSignup(openPanelData.email, openPanelData.source);
+          break;
       }
     } catch (e) {
       console.warn("[Rybbit] Tracking error:", e);
@@ -307,6 +311,13 @@ export function useAnalytics() {
     });
   }, [trackDual]);
 
+  const trackNewsletterSignup = useCallback((email: string, source: string) => {
+    trackDual("newsletter_signup", {
+      email,
+      source,
+    });
+  }, [trackDual]);
+
   const identifyUser = useCallback((user: {
     profileId: string;
     email?: string;
@@ -338,6 +349,7 @@ export function useAnalytics() {
     trackWishlistAdd,
     trackUserLogin,
     trackUserRegister,
+    trackNewsletterSignup,
     identifyUser,
   };
 }