feat(dashboard): Next.js 16 merchant panel with offline POS and PWA

Complete merchant dashboard upgrade:

Next.js 16 compatibility:
- Fix params/searchParams typed as Promise<{}> throughout App Router
- Replace middleware.ts with proxy.ts (Next.js 16 convention)
- Remove unused @ts-expect-error directives caught by stricter TS
- Cast dynamic next-intl t() keys to fix TranslateArgs type errors

Offline POS:
- IndexedDB queue (meezi_pos_offline) for orders created while offline
- Zustand sync store tracking queueCount, isSyncing, isOnline
- useOfflineSync hook: auto-syncs on reconnect/visibility-change
- SyncStatusIndicator chip in topbar (amber=offline, blue=syncing)
- submitOrderToApi falls back to local order on network failure
- Local orders skip payment flow; sync on reconnect

PWA (installable):
- @ducanh2912/next-pwa with Workbox runtime caching rules
- Web App Manifest (manifest.ts) — RTL/Farsi, theme #0F6E56
- PWA icons: 192px, 512px, maskable 512px
- next.config.ts replaces next.config.mjs

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

web/dashboard/src/components/support/ticket-status-badge.tsx

@@ -0,0 +1,67 @@
+"use client";
+
+import { useTranslations } from "next-intl";
+import { Badge } from "@/components/ui/badge";
+import { cn } from "@/lib/utils";
+
+export type TicketStatus =
+  | "Open"
+  | "InProgress"
+  | "WaitingMerchant"
+  | "Resolved"
+  | "Closed"
+  | string;
+
+export function isTicketClosed(status: TicketStatus): boolean {
+  return status === "Closed" || status === "Resolved";
+}
+
+export function TicketStatusBadge({
+  status,
+  className,
+}: {
+  status: TicketStatus;
+  className?: string;
+}) {
+  const t = useTranslations("support.status");
+
+  const label = (() => {
+    switch (status) {
+      case "Open":
+        return t("open");
+      case "InProgress":
+        return t("inProgress");
+      case "WaitingMerchant":
+        return t("waitingMerchant");
+      case "Resolved":
+        return t("resolved");
+      case "Closed":
+        return t("closed");
+      default:
+        return status;
+    }
+  })();
+
+  const styles = (() => {
+    switch (status) {
+      case "Open":
+        return "bg-amber-100 text-amber-900 border-amber-200";
+      case "InProgress":
+        return "bg-blue-100 text-blue-900 border-blue-200";
+      case "WaitingMerchant":
+        return "bg-[#E1F5EE] text-[#0F6E56] border-[#0F6E56]/20";
+      case "Resolved":
+        return "bg-muted text-muted-foreground";
+      case "Closed":
+        return "bg-muted text-muted-foreground";
+      default:
+        return "";
+    }
+  })();
+
+  return (
+    <Badge variant="outline" className={cn("border font-normal", styles, className)}>
+      {label}
+    </Badge>
+  );
+}