Remove CC type flip — normalizer already produces correct DEBIT/CREDIT for Discover CC

src/app/api/upload/route.ts

@@ -74,13 +74,7 @@ export async function POST(req: Request) {
     config = result.data
   }
 
-  const rawNormalized = normalizeRows(allRows, accountId, config)
-
-  // Credit card CSVs have inverted sign semantics: CREDIT = charge, DEBIT = refund.
-  // Flip types so the rest of the app can treat DEBIT = spending universally.
-  const normalized = account.type === 'CREDIT_CARD'
-    ? rawNormalized.map((r) => ({ ...r, type: r.type === 'CREDIT' ? 'DEBIT' as const : 'CREDIT' as const }))
-    : rawNormalized
+  const normalized = normalizeRows(allRows, accountId, config)
 
   // Apply budget auto-assign rules (first match wins)
   const budgetRules = await prisma.budgetRule.findMany({
@@ -125,21 +119,6 @@ export async function POST(req: Request) {
       skipDuplicates: true,
     })
 
-    // For CC accounts, also correct the type on any rows that already existed
-    // (uploaded before the CREDIT↔DEBIT flip was introduced).
-    if (account.type === 'CREDIT_CARD') {
-      const debitHashes = rowsWithBudgets.filter((r) => r.type === 'DEBIT').map((r) => r.dedupeHash)
-      const creditHashes = rowsWithBudgets.filter((r) => r.type === 'CREDIT').map((r) => r.dedupeHash)
-      await Promise.all([
-        debitHashes.length > 0
-          ? prisma.transaction.updateMany({ where: { dedupeHash: { in: debitHashes }, type: 'CREDIT' }, data: { type: 'DEBIT' } })
-          : Promise.resolve(),
-        creditHashes.length > 0
-          ? prisma.transaction.updateMany({ where: { dedupeHash: { in: creditHashes }, type: 'DEBIT' }, data: { type: 'CREDIT' } })
-          : Promise.resolve(),
-      ])
-    }
-
     const skippedCount = normalized.length - importedCount
 
     // Recompute current balance