Fix budget sign logic: CC CREDIT=spend, CC DEBIT=refund (type-flip aware)

src/app/(app)/budgets/page.tsx

@@ -27,7 +27,14 @@ export default async function BudgetsPage({ searchParams }: { searchParams: Sear
     }),
     prisma.$queryRaw<{ budgetId: string; total: bigint }[]>`
       SELECT t."budgetId",
-        COALESCE(SUM(CASE WHEN t.type = 'DEBIT' THEN t."amountCents" ELSE -t."amountCents" END), 0)::bigint AS total
+        COALESCE(SUM(
+          CASE
+            WHEN a.type = 'CREDIT_CARD' AND t.type = 'CREDIT' THEN  t."amountCents"
+            WHEN a.type = 'CREDIT_CARD' AND t.type = 'DEBIT'   THEN -t."amountCents"
+            WHEN t.type = 'DEBIT'                              THEN  t."amountCents"
+            ELSE                                                    -t."amountCents"
+          END
+        ), 0)::bigint AS total
       FROM "Transaction" t
       JOIN "Account" a ON t."accountId" = a.id
       WHERE a."userId" = ${userId}