Add in-app + real-time notifications (SignalR/mock, Iran-friendly)

- AppNotification + OnlineService.onNotification (hub event + mock periodic) —
  no FCM/APNs (blocked in Iran); uses the existing realtime channel
- notification-store + pushNotification(); 🔔 bell with unread badge in TopBar,
  notifications screen, global toaster (plays notify sfx)
- Wired events: daily reward, post-match achievements, friend requests
- Closed-app push (Pushe/Najva/Chabok) noted as a later step (needs provider keys)

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

src/components/screens/GameScreen.tsx

@@ -7,6 +7,7 @@ import { useGameStore } from "@/lib/game-store";
 import { useSessionStore } from "@/lib/session-store";
 import { useUIStore } from "@/lib/ui-store";
 import { getService } from "@/lib/online/service";
+import { pushNotification } from "@/lib/notification-store";
 import { MatchSummary, RewardResult } from "@/lib/online/types";
 
 export function GameScreen() {
@@ -45,6 +46,15 @@ export function GameScreen() {
         .then((r) => {
           setReward(r);
           refreshProfile();
+          for (const a of r.newAchievements)
+            pushNotification({
+              kind: "achievement",
+              titleFa: "دستاورد جدید",
+              titleEn: "New achievement",
+              bodyFa: a.nameFa,
+              bodyEn: a.nameEn,
+              icon: a.icon,
+            });
         });
     }
   }, [mode, game.phase, game.matchWinner, game.matchScore, game.trump, meta, tally, refreshProfile]);

src/components/screens/NotificationsScreen.tsx

@@ -0,0 +1,49 @@
+"use client";
+
+import { useEffect } from "react";
+import { ScreenHeader, ScreenShell } from "@/components/online/ScreenHeader";
+import { useNotifStore } from "@/lib/notification-store";
+import { useI18n } from "@/lib/i18n";
+
+export function NotificationsScreen() {
+  const { t, locale } = useI18n();
+  const items = useNotifStore((s) => s.items);
+  const markAllRead = useNotifStore((s) => s.markAllRead);
+
+  useEffect(() => {
+    markAllRead();
+  }, [markAllRead]);
+
+  const fmtTime = (ts: number) =>
+    new Date(ts).toLocaleTimeString(locale === "fa" ? "fa-IR" : "en-US", {
+      hour: "2-digit",
+      minute: "2-digit",
+    });
+
+  return (
+    <ScreenShell>
+      <ScreenHeader title={t("notif.title")} />
+      {items.length === 0 && (
+        <p className="text-center text-cream/40 py-16">{t("notif.empty")}</p>
+      )}
+      <div className="space-y-2 pb-6">
+        {items.map((n) => (
+          <div key={n.id} className="glass rounded-xl p-3 flex items-center gap-3">
+            <span className="text-2xl">{n.icon}</span>
+            <div className="flex-1 min-w-0">
+              <div className="text-sm font-semibold text-cream">
+                {locale === "fa" ? n.titleFa : n.titleEn}
+              </div>
+              {(n.bodyFa || n.bodyEn) && (
+                <div className="text-[11px] text-cream/50">
+                  {locale === "fa" ? n.bodyFa : n.bodyEn}
+                </div>
+              )}
+            </div>
+            <span className="text-[10px] text-cream/35 tabular-nums">{fmtTime(n.ts)}</span>
+          </div>
+        ))}
+      </div>
+    </ScreenShell>
+  );
+}