Add ACMCC app source, Supabase backend, and project config

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

supabase/migrations/20260406192928_7cbdc224-7ed2-487e-b055-a844e90a180b.sql

@@ -0,0 +1,18 @@
+WITH ranked AS (
+  SELECT id,
+         ROW_NUMBER() OVER (
+           PARTITION BY owner_id, reference_type, reference_id
+           ORDER BY created_at ASC, id ASC
+         ) AS rn
+  FROM public.owner_ledger_entries
+  WHERE reference_type = 'buildium'
+    AND reference_id IS NOT NULL
+)
+DELETE FROM public.owner_ledger_entries ole
+USING ranked
+WHERE ole.id = ranked.id
+  AND ranked.rn > 1;
+
+CREATE UNIQUE INDEX IF NOT EXISTS owner_ledger_entries_buildium_reference_unique
+ON public.owner_ledger_entries (owner_id, reference_type, reference_id)
+WHERE reference_type = 'buildium' AND reference_id IS NOT NULL;