Notifications: deep-link on tap + swipe-to-dismiss

Each notification now navigates to its related screen when tapped (toast or
list): friend_request/invite -> Friends, achievement/reward -> Achievements,
daily -> opens the daily-reward modal, coin-purchase success -> Shop. An
explicit per-notification 'route' overrides the kind default.

List rows are swipeable (drag aside) and have an X to dismiss individually,
plus a Clear-all button; the toast can be flicked up to dismiss or tapped to
open. New store actions: markRead/remove/clearAll + openNotification navigator.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/app/page.tsx

@@ -95,6 +95,7 @@ export default function Page() {
           bodyFa: coins ? `${coins} سکه به حساب شما اضافه شد` : undefined,
           bodyEn: coins ? `${coins} coins added` : undefined,
           icon: "💰",
+          route: "shop",
         });
         useSessionStore.getState().refreshProfile();
       } else {
@@ -118,6 +119,7 @@ export default function Page() {
               bodyFa: v.coins ? `${v.coins.toLocaleString()} سکه اضافه شد` : undefined,
               bodyEn: v.coins ? `${v.coins.toLocaleString()} coins added` : undefined,
               icon: "💰",
+              route: "shop",
             });
           } else {
             pushNotification({ kind: "system", titleFa: "پرداخت ناموفق بود", titleEn: "Payment failed", icon: "⚠️" });