fix(actions): skip Supabase fetch at build time when env vars unset

The /indian-river-direct/stops page and sitemap prerender at build time
and call getPublicStopsForBrand / getActiveStopsForSitemap / getBrandSettingsPublic.
Those actions fetch NEXT_PUBLIC_SUPABASE_URL via Supabase REST. During
the GitHub/Gitea build, the Supabase secret is unset (or the value is
".supabase.co" which doesn't resolve), so the fetch errors with
ECONNREFUSED and the build aborts.

Return [] / not-configured when the env vars are missing so the prerender
can complete. Runtime behavior is unchanged when the vars are set.

src/actions/brand-settings.ts

@@ -271,8 +271,13 @@ export async function getBrandSettings(brandId: string): Promise<GetBrandSetting
 
 // Public version for storefront pages — uses slug, no auth required
 export async function getBrandSettingsPublic(brandSlug: string): Promise<GetBrandSettingsResult & { wholesaleEnabled?: boolean | null }> {
-  const supabaseUrl = process.env.NEXT_PUBLIC_SUPABASE_URL!;
-  const supabaseKey = process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY!;
+  const supabaseUrl = process.env.NEXT_PUBLIC_SUPABASE_URL;
+  const supabaseKey = process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY;
+  // Build-time prerender runs before Supabase env is configured. Return
+  // a not-configured result; the page falls back to slug-based defaults.
+  if (!supabaseUrl || !supabaseKey) {
+    return { success: false, error: "Supabase not configured", wholesaleEnabled: undefined };
+  }
 
   const response = await fetch(
     `${supabaseUrl}/rest/v1/rpc/get_brand_settings_by_slug`,

src/actions/stops.ts

@@ -110,8 +110,11 @@ export type StopForSitemap = {
 };
 
 export async function getActiveStopsForSitemap(): Promise<StopForSitemap[]> {
-  const supabaseUrl = process.env.NEXT_PUBLIC_SUPABASE_URL!;
-  const supabaseKey = process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY!;
+  const supabaseUrl = process.env.NEXT_PUBLIC_SUPABASE_URL;
+  const supabaseKey = process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY;
+  // Build-time prerender runs before Supabase env is configured. Returning
+  // an empty list lets the sitemap render with only the static URLs.
+  if (!supabaseUrl || !supabaseKey) return [];
 
   // Get all active stops with their brand slug
   const response = await fetch(
@@ -155,8 +158,12 @@ export async function getPublicStopsForBrand(
 ): Promise<PublicStop[]> {
   if (!brandSlug) return [];
 
-  const supabaseUrl = process.env.NEXT_PUBLIC_SUPABASE_URL!;
-  const supabaseKey = process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY!;
+  const supabaseUrl = process.env.NEXT_PUBLIC_SUPABASE_URL;
+  const supabaseKey = process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY;
+  // Build-time prerender runs before Supabase env is configured. Returning
+  // an empty list lets the page render with zero stops; at runtime the
+  // fetch path is unchanged.
+  if (!supabaseUrl || !supabaseKey) return [];
 
   const response = await fetch(
     `${supabaseUrl}/rest/v1/rpc/get_public_stops_for_brand`,