feat: add dedicated notifications page

Replace the bell popover with an RTL notification inbox, inline Markdown details, read filters, and explicit destination and delete actions. Remove retired email-link screens and client calls.

src/components/MobileBottomNav.tsx

@@ -20,8 +20,7 @@ const isProfileOrAuthPath = (pathname: string) =>
   pathname.startsWith("/profile/") ||
   pathname === "/auth" ||
   pathname.startsWith("/auth/") ||
-  pathname.startsWith("/reset-password") ||
-  pathname.startsWith("/verify-email");
+  pathname.startsWith("/reset-password");
 
 export default function MobileBottomNav() {
   const pathname = usePathname() || "/";