Add ACMCC app source, Supabase backend, and project config

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

supabase/migrations/20260420231116_52f28248-66d4-4fdb-8214-1b1e7ab90eb6.sql

@@ -0,0 +1,13 @@
+-- Replace the broken anon insert policy with one that validates via SECURITY DEFINER function (bypasses RLS on violations)
+DROP POLICY IF EXISTS "Anon can submit violation responses for valid violation" ON public.violation_responses;
+
+CREATE POLICY "Anon can submit violation responses for valid violation"
+ON public.violation_responses
+FOR INSERT
+TO anon, authenticated
+WITH CHECK (
+  EXISTS (
+    SELECT 1 FROM public.lookup_violation_for_response(violation_id) lv
+    WHERE lv.id = violation_id
+  )
+);