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));

src/Meezi.Infrastructure/Data/DiscoverShowcaseSeeder.cs

@@ -11,6 +11,28 @@ namespace Meezi.Infrastructure.Data;
 /// <summary>Seeds 30 Persian showcase cafés for public discover (development only).</summary>
 public static class DiscoverShowcaseSeeder
 {
+    // Approximate city centres. Each café is scattered around its city with a
+    // small deterministic offset (derived from its id) so the marketing map
+    // shows a realistic cluster of blinking lights instead of one stacked dot.
+    private static readonly Dictionary<string, (double Lat, double Lng, double Spread)> CityGeo = new()
+    {
+        ["تهران"] = (35.70, 51.39, 0.13),
+        ["کرج"] = (35.83, 50.99, 0.07),
+    };
+
+    private static (double Lat, double Lng) GeoFor(string id, string city)
+    {
+        var (lat, lng, spread) = CityGeo.TryGetValue(city, out var g) ? g : (35.70, 51.39, 0.13);
+        unchecked
+        {
+            var h = 17;
+            foreach (var ch in id) h = (h * 31) + ch;
+            var ox = (((h & 0xFFFF) / 65535.0) - 0.5) * 2 * spread;
+            var oy = ((((h >> 16) & 0xFFFF) / 65535.0) - 0.5) * 2 * spread;
+            return (Math.Round(lat + oy, 5), Math.Round(lng + ox, 5));
+        }
+    }
+
     private static readonly string[] ReviewAuthors = ["سارا", "علی", "مینا", "رضا", "نازنین"];
     private static readonly string[] ReviewComments =
     [
@@ -27,6 +49,7 @@ public static class DiscoverShowcaseSeeder
         foreach (var spec in DiscoverShowcaseCatalog.Cafes)
         {
             var cafe = await db.Cafes.FirstOrDefaultAsync(c => c.Id == spec.Id);
+            var (geoLat, geoLng) = GeoFor(spec.Id, spec.City);
             if (cafe is null)
             {
                 cafe = new Cafe
@@ -37,6 +60,8 @@ public static class DiscoverShowcaseSeeder
                     Slug = spec.Slug,
                     City = spec.City,
                     Address = spec.Address,
+                    Latitude = geoLat,
+                    Longitude = geoLng,
                     Description = spec.Description,
                     PlanTier = spec.PlanTier,
                     PreferredLanguage = "fa",
@@ -100,6 +125,12 @@ public static class DiscoverShowcaseSeeder
                     cafe.IsVerified = true;
                     changed = true;
                 }
+                if (cafe.Latitude is null || cafe.Longitude is null)
+                {
+                    cafe.Latitude = geoLat;
+                    cafe.Longitude = geoLng;
+                    changed = true;
+                }
                 if (changed)
                     await db.SaveChangesAsync();
             }

src/Meezi.Infrastructure/Data/PlatformDataSeeder.cs

@@ -29,6 +29,10 @@ public static class PlatformDataSeeder
         // fresh deploy. Idempotent. Phone is overridable via "Seed:SystemAdminPhone".
         await EnsureOwnerAdminAsync(db, config, logger);
 
+        // Production-safe: give cafés without a map pin an approximate location
+        // from their city, so the public map lights up. Idempotent (fills nulls).
+        await BackfillCafeLocationsAsync(db, logger);
+
         if (!env.IsDevelopment())
         {
             // Production: also ensure integration settings (Kavenegar enabled/template,
@@ -45,6 +49,79 @@ public static class PlatformDataSeeder
         await EnsureIntegrationSettingsAsync(db, logger);
     }
 
+    // Approximate centres for the major Iranian cities cafés sign up from.
+    private static readonly Dictionary<string, (double Lat, double Lng)> CityCentres = new(StringComparer.Ordinal)
+    {
+        ["تهران"] = (35.70, 51.39),
+        ["کرج"] = (35.84, 50.99),
+        ["مشهد"] = (36.30, 59.61),
+        ["اصفهان"] = (32.66, 51.67),
+        ["شیراز"] = (29.59, 52.53),
+        ["تبریز"] = (38.08, 46.29),
+        ["قم"] = (34.64, 50.88),
+        ["اهواز"] = (31.32, 48.67),
+        ["کرمانشاه"] = (34.31, 47.07),
+        ["رشت"] = (37.28, 49.58),
+        ["ارومیه"] = (37.55, 45.07),
+        ["همدان"] = (34.80, 48.52),
+        ["یزد"] = (31.90, 54.37),
+        ["اراک"] = (34.09, 49.69),
+        ["کرمان"] = (30.28, 57.08),
+        ["بندرعباس"] = (27.18, 56.27),
+        ["قزوین"] = (36.28, 50.00),
+        ["ساری"] = (36.57, 53.06),
+        ["گرگان"] = (36.84, 54.44),
+        ["زنجان"] = (36.68, 48.49),
+        ["کیش"] = (26.56, 53.98),
+    };
+
+    /// <summary>
+    /// Gives cafés that have no map pin an approximate location at their city
+    /// centre (plus a small deterministic per-café offset so multiple cafés in
+    /// one city don't stack on a single point). Only fills rows where Latitude or
+    /// Longitude is null and the city is recognised; owners can drop an exact pin
+    /// later from Settings. Idempotent — never overwrites an existing pin.
+    /// </summary>
+    private static async Task BackfillCafeLocationsAsync(AppDbContext db, ILogger logger)
+    {
+        var cafes = await db.Cafes
+            .Where(c => c.DeletedAt == null
+                && (c.Latitude == null || c.Longitude == null)
+                && c.City != null)
+            .ToListAsync();
+        if (cafes.Count == 0) return;
+
+        var updated = 0;
+        foreach (var cafe in cafes)
+        {
+            var city = cafe.City!.Trim();
+            if (!CityCentres.TryGetValue(city, out var centre)) continue;
+            var (lat, lng) = ScatterAround(cafe.Id, centre.Lat, centre.Lng, 0.05);
+            cafe.Latitude = lat;
+            cafe.Longitude = lng;
+            updated++;
+        }
+
+        if (updated > 0)
+        {
+            await db.SaveChangesAsync();
+            logger.LogInformation(
+                "Cafe location backfill: set approximate coordinates for {Count} café(s) from city centre", updated);
+        }
+    }
+
+    private static (double Lat, double Lng) ScatterAround(string id, double lat, double lng, double spread)
+    {
+        unchecked
+        {
+            var h = 17;
+            foreach (var ch in id) h = (h * 31) + ch;
+            var ox = (((h & 0xFFFF) / 65535.0) - 0.5) * 2 * spread;
+            var oy = ((((h >> 16) & 0xFFFF) / 65535.0) - 0.5) * 2 * spread;
+            return (Math.Round(lat + oy, 5), Math.Round(lng + ox, 5));
+        }
+    }
+
     /// <summary>
     /// Ensures the platform owner's system-admin account exists in EVERY environment
     /// (including production), so the admin panel is reachable on a fresh deploy.

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",