fix(koja): default to fa (no browser locale guess); guard null discoverProfile

Koja auto-detected locale from the browser Accept-Language (en for many Persian users); set localeDetection:false so locale-less URLs default to fa. Also guarded cafe.discoverProfile across the cafe page, cafe card, and JSON-LD — a café without a discover profile crashed the page (500). The cafe page now resolves the café first and notFound()s an unknown slug before fetching menu/reviews.

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

web/koja/src/components/cafe/cafe-card.tsx

@@ -11,7 +11,8 @@ interface Props {
 export function CafeCard({ cafe, locale, href }: Props) {
   const isFa = locale === "fa";
   const name = isFa ? cafe.name : (cafe.name);
-  const priceTier = cafe.discoverProfile.priceTier;
+  const priceTier = cafe.discoverProfile?.priceTier ?? null;
+  const themes = cafe.discoverProfile?.themes ?? [];
   const priceLabel = priceTier ? (PRICE_TIER_LABELS[priceTier]?.[isFa ? "fa" : "en"] ?? priceTier) : null;
 
   return (
@@ -72,9 +73,9 @@ export function CafeCard({ cafe, locale, href }: Props) {
         )}
 
         {/* Tags */}
-        {cafe.discoverProfile.themes.length > 0 && (
+        {themes.length > 0 && (
           <div className="mt-2 flex flex-wrap gap-1">
-            {cafe.discoverProfile.themes.slice(0, 3).map((tag) => (
+            {themes.slice(0, 3).map((tag) => (
               <span
                 key={tag}
                 className="rounded-full bg-brand-50 px-2 py-0.5 text-[10px] font-medium text-brand-700"

web/koja/src/components/seo/cafe-json-ld.tsx

@@ -46,11 +46,11 @@ export function CafeJsonLd({ cafe, locale, baseUrl }: Props) {
         worstRating: "1",
       },
     } : {}),
-    ...(cafe.discoverProfile.themes.length ? {
+    ...(cafe.discoverProfile?.themes?.length ? {
       servesCuisine: cafe.discoverProfile.themes,
     } : {}),
     priceRange: (() => {
-      const tier = cafe.discoverProfile.priceTier;
+      const tier = cafe.discoverProfile?.priceTier;
       if (tier === "budget") return "﷼";
       if (tier === "moderate") return "﷼﷼";
       if (tier === "upscale") return "﷼﷼﷼";