fix(demo): allow Manager to seed demo data + surface seed errors

The dashboard demo-data banner is shown to Owner and Manager, but the /demo/seed endpoint required strictly Owner, so a Manager clicking it got a silent 403 (the banner had no error handler) — appearing as 'nothing happens, no tables or items'. The endpoint now allows Owner or Manager, and the banner shows the error on failure.

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

src/Meezi.API/Controllers/DemoSeedController.cs

@@ -25,7 +25,9 @@ public class DemoSeedController : CafeApiControllerBase
         CancellationToken ct)
     {
         if (EnsureCafeAccess(cafeId, tenant) is { } denied) return denied;
-        if (EnsureOwner(tenant) is { } ownerDenied) return ownerDenied;
+        // Demo data is a setup helper; Owner or Manager may run it (matches the
+        // dashboard banner, which is shown to both roles).
+        if (EnsureManager(tenant) is { } managerDenied) return managerDenied;
 
         var result = await _demoSeed.SeedAsync(cafeId, ct);
         return Ok(new ApiResponse<DemoSeedResult>(true, result));

web/dashboard/src/components/demo/demo-data-banner.tsx

@@ -3,7 +3,8 @@
 import { useState } from "react";
 import { useMutation, useQueryClient } from "@tanstack/react-query";
 import { Sparkles, Loader2 } from "lucide-react";
-import { apiPost } from "@/lib/api/client";
+import { ApiClientError, apiPost } from "@/lib/api/client";
+import { notify } from "@/lib/notify";
 import { useAuthStore } from "@/lib/stores/auth.store";
 import { Button } from "@/components/ui/button";
 import { cn } from "@/lib/utils";
@@ -39,6 +40,13 @@ export function DemoDataBanner({ invalidateKeys, className }: Props) {
         qc.invalidateQueries({ queryKey: key });
       }
     },
+    onError: (err) => {
+      notify.error(
+        err instanceof ApiClientError
+          ? err.message
+          : "افزودن داده‌های نمونه ناموفق بود. دوباره تلاش کنید."
+      );
+    },
   });
 
   if (!cafeId || (role !== "Owner" && role !== "Manager")) return null;

web/dashboard/src/i18n/routing.ts

@@ -4,6 +4,11 @@ import { createNavigation } from "next-intl/navigation";
 export const routing = defineRouting({
   locales: ["fa", "ar", "en"],
   defaultLocale: "fa",
+  // Iran-first: don't auto-pick the locale from the browser's Accept-Language
+  // (Persian users often have an en-US browser). A locale-less URL defaults to
+  // fa; the locale is otherwise taken from the URL prefix or the marketing-site
+  // link (e.g. app.meezi.ir/fa/login).
+  localeDetection: false,
 });
 
 export const { Link, redirect, usePathname, useRouter } =

web/website/src/app/[locale]/contact/page.tsx

@@ -41,7 +41,7 @@ const fa = {
       desc: "از داشبورد میزی در دسترس است",
       value: "چت زنده",
       cta: "ورود به داشبورد",
-      href: "https://app.meezi.ir",
+      href: "https://app.meezi.ir/fa",
     },
   ],
   officeTitle: "دفتر مرکزی",
@@ -79,7 +79,7 @@ const en = {
       desc: "Available inside the Meezi dashboard",
       value: "Live chat",
       cta: "Go to dashboard",
-      href: "https://app.meezi.ir",
+      href: "https://app.meezi.ir/en",
     },
   ],
   officeTitle: "Head Office",

web/website/src/components/layout/navbar.tsx

@@ -93,7 +93,7 @@ export function Navbar() {
             {locale === "fa" ? "EN" : "فا"}
           </button>
           <a
-            href="https://app.meezi.ir/login"
+            href={`https://app.meezi.ir/${locale}/login`}
             className="rounded-lg px-3 py-2 text-sm font-medium text-gray-600 transition-colors hover:bg-gray-100 hover:text-gray-900"
           >
             {t("login")}
@@ -143,7 +143,7 @@ export function Navbar() {
           </ul>
           <div className="mt-3 flex flex-col gap-2 border-t border-gray-100 pt-3">
             <a
-              href="https://app.meezi.ir/login"
+              href={`https://app.meezi.ir/${locale}/login`}
               className="block rounded-lg px-3 py-2.5 text-center text-sm font-medium text-gray-600 hover:bg-gray-50"
             >
               {t("login")}

web/website/src/components/sections/launch-countdown-section.tsx

@@ -101,7 +101,7 @@ export function LaunchCountdownSection() {
             </div>
 
             <a
-              href="https://app.meezi.ir/register"
+              href={`https://app.meezi.ir/${locale}/register`}
               className={cn(
                 "inline-flex items-center justify-center rounded-xl bg-brand-700 px-6 py-3 text-sm font-semibold text-white",
                 "transition hover:bg-brand-800 focus:outline-none focus-visible:ring-2 focus-visible:ring-brand-700 focus-visible:ring-offset-2"

web/website/src/components/sections/pricing-section.tsx

@@ -34,7 +34,7 @@ export function PricingSection() {
       priceNote: t("freePriceNote"),
       desc:      t("freeDesc"),
       cta:       t("ctaFree"),
-      href:      "https://app.meezi.ir/register",
+      href:      `https://app.meezi.ir/${locale}/register`,
       features:  [t("f1"), t("f2"), t("f3"), t("f4"), t("f5")],
       popular: false,
       variant: "outline",