big test rc

schemas/alter_users_rc_bigint.sql

@@ -0,0 +1,8 @@
+-- `users.rc` as type `real` is IEEE float32: above ~1e7, consecutive values are spaced
+-- by more than 1 (and by hundreds at ~4e9), so debits like -20 do not change the stored value.
+-- Run this in Supabase SQL before relying on `purchase_rc` or large RC balances.
+--
+-- After this, re-apply public.purchase_rc from schemas/rpc_purchase_rc.sql (no ::real casts).
+
+alter table public.users
+  alter column rc type bigint using round(coalesce(rc, 0))::bigint;