Add ACMCC app source, Supabase backend, and project config

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

supabase/migrations/20260514233934_d4d7d2a3-f6d4-4960-9f0e-dd6d54cea58e.sql

@@ -0,0 +1,28 @@
+CREATE OR REPLACE FUNCTION public.is_arc_committee_member_of_association(_user_id uuid, _association_id uuid)
+RETURNS boolean
+LANGUAGE sql
+STABLE
+SECURITY DEFINER
+SET search_path TO 'public'
+AS $$
+  SELECT EXISTS (
+    SELECT 1
+    FROM public.arc_committee_members acm
+    JOIN auth.users u ON lower(u.email) = lower(acm.email)
+    WHERE u.id = _user_id
+      AND acm.association_id = _association_id
+      AND acm.is_active = true
+      AND acm.email IS NOT NULL
+  );
+$$;
+
+DROP POLICY IF EXISTS "ARC committee members can view association ARC applications" ON public.arc_applications;
+
+CREATE POLICY "ARC committee members can view association ARC applications"
+ON public.arc_applications
+FOR SELECT
+TO authenticated
+USING (
+  public.has_role(auth.uid(), 'arc_member'::public.app_role)
+  AND public.is_arc_committee_member_of_association(auth.uid(), association_id)
+);