Phase3: Billing Customerpage/Mailings

src/components/layout/nav-shell.tsx

@@ -85,6 +85,20 @@ function NavBar() {
                 {t("support")}
               </NavLink>
             )}
+            {/* Phase 3: Billing visible to anyone signed in. The
+                page is org-scoped server-side — non-owner members
+                see the same invoice history their owner does, but
+                actions like "configure billing details" are gated
+                separately on the settings page. Personal accounts
+                see their own (single-tenant) invoices. */}
+            {user && (
+              <NavLink
+                href="/billing"
+                active={pathname.startsWith("/billing")}
+              >
+                {t("billing")}
+              </NavLink>
+            )}
             {user?.isPlatform && (
               <NavLink href="/admin" active={pathname === "/admin"}>
                 {t("admin")}