Add ACMCC app source, Supabase backend, and project config

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

supabase/migrations/20260423033742_09cc316d-e990-4ac7-a76d-ddb74242af93.sql

@@ -0,0 +1,14 @@
+CREATE POLICY "Homeowners can view own unit ledger entries"
+ON public.owner_ledger_entries
+FOR SELECT
+TO authenticated
+USING (
+  EXISTS (
+    SELECT 1
+    FROM public.owners o
+    WHERE o.user_id = auth.uid()
+      AND o.association_id = owner_ledger_entries.association_id
+      AND o.unit_id IS NOT NULL
+      AND o.unit_id = owner_ledger_entries.unit_id
+  )
+);