Add ACMCC app source, Supabase backend, and project config

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

supabase/migrations/20260320205815_e97603d5-d1b5-4a61-a3ee-c909d2400b08.sql

@@ -0,0 +1,14 @@
+
+-- Step 1: Add account_number column to units (rename from buildium_account_number)
+ALTER TABLE public.units RENAME COLUMN buildium_account_number TO account_number;
+
+-- Step 2: Migrate any account_number data from owners to their linked units (if unit doesn't already have one)
+UPDATE public.units u
+SET account_number = o.account_number
+FROM public.owners o
+WHERE o.unit_id = u.id
+  AND o.account_number IS NOT NULL
+  AND (u.account_number IS NULL OR u.account_number = '');
+
+-- Step 3: Drop account_number from owners
+ALTER TABLE public.owners DROP COLUMN account_number;