Add ACMCC app source, Supabase backend, and project config

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

supabase/functions/get-google-maps-key/index.ts

@@ -0,0 +1,23 @@
+const corsHeaders = {
+  'Access-Control-Allow-Origin': '*',
+  'Access-Control-Allow-Headers': 'authorization, x-client-info, apikey, content-type',
+};
+
+Deno.serve(async (req) => {
+  if (req.method === 'OPTIONS') {
+    return new Response(null, { headers: corsHeaders });
+  }
+
+  const apiKey = Deno.env.get('GOOGLE_MAPS_API_KEY');
+  if (!apiKey) {
+    return new Response(
+      JSON.stringify({ error: 'Google Maps API key not configured' }),
+      { status: 500, headers: { ...corsHeaders, 'Content-Type': 'application/json' } }
+    );
+  }
+
+  return new Response(
+    JSON.stringify({ key: apiKey }),
+    { headers: { ...corsHeaders, 'Content-Type': 'application/json', 'Cache-Control': 'private, max-age=3600' } }
+  );
+});