refactor(transactions): drop the new-since-last-visit counter

Keep only the per-row marking (accent border + tint); remove the count
shown above the list. Also drop what that left orphaned: the countNewSince
helper and its tests, and the two unused locale keys.

lang/es.json

@@ -203,9 +203,7 @@
     "8. Your Rights Under GDPR": "8. Tus Derechos Bajo GDPR",
     "9. Cookies and Tracking": "9. Cookies y Rastreo",
     "9. Disclaimers and Warranties": "9. Descargos de Responsabilidad y Garantías",
-    "1 new since your last visit": "1 nueva desde tu última visita",
     ":count matching transaction(s)": ":count transacción(es) coincidente(s)",
-    ":count new since your last visit": ":count nuevas desde tu última visita",
     ":count new transactions synced on Whisper Money": ":count nuevas transacciones sincronizadas en Whisper Money",
     ":count transaction": ":count transacción",
     ":count transaction(s) will be affected.": ":count transacción(es) serán afectadas.",

resources/js/lib/new-transactions.test.ts

@@ -1,6 +1,6 @@
 import { describe, expect, it } from 'vitest';
 
-import { countNewSince, isNewSince, newestCreatedAt } from './new-transactions';
+import { isNewSince, newestCreatedAt } from './new-transactions';
 
 const tx = (created_at: string) => ({ created_at });
 
@@ -35,27 +35,6 @@ describe('isNewSince', () => {
     });
 });
 
-describe('countNewSince', () => {
-    const transactions = [
-        tx('2026-06-29T10:00:00Z'),
-        tx('2026-06-20T08:00:00Z'), // seen, interleaved
-        tx('2026-06-28T09:00:00Z'),
-        tx('2026-06-19T08:00:00Z'), // seen
-    ];
-
-    it('counts every new row regardless of position', () => {
-        expect(countNewSince(transactions, '2026-06-25T00:00:00Z')).toBe(2);
-    });
-
-    it('returns 0 when nothing is new', () => {
-        expect(countNewSince(transactions, '2026-06-30T00:00:00Z')).toBe(0);
-    });
-
-    it('returns 0 on a first visit', () => {
-        expect(countNewSince(transactions, null)).toBe(0);
-    });
-});
-
 describe('newestCreatedAt', () => {
     it('returns null for an empty list', () => {
         expect(newestCreatedAt([])).toBeNull();

resources/js/lib/new-transactions.ts

@@ -69,19 +69,3 @@ export function isNewSince(
 
     return !Number.isNaN(createdMs) && createdMs > lastVisitMs;
 }
-
-/**
- * How many of the given transactions arrived since the last visit. Counts only
- * the loaded transactions, so it can undercount when newer rows live in a
- * not-yet-loaded page.
- */
-export function countNewSince(
-    transactions: Pick<Transaction, 'created_at'>[],
-    lastVisit: string | null,
-): number {
-    return transactions.reduce(
-        (count, transaction) =>
-            isNewSince(transaction, lastVisit) ? count + 1 : count,
-        0,
-    );
-}

resources/js/pages/transactions/index.tsx

@@ -84,7 +84,6 @@ import {
 } from '@/lib/cursor-pagination';
 import { consoleDebug } from '@/lib/debug';
 import {
-    countNewSince,
     isNewSince,
     loadLastVisit,
     newestCreatedAt,
@@ -309,7 +308,10 @@ function TransactionRowComponent({
                         (row.getIsSelected() || contextMenuOpen) && 'selected'
                     }
                     data-index={virtualRow.index}
-                    className={cn('cursor-pointer', isNew && 'bg-blue-500/5 dark:bg-blue-500/10')}
+                    className={cn(
+                        'cursor-pointer',
+                        isNew && 'bg-blue-500/5 dark:bg-blue-500/10',
+                    )}
                     onClick={handleRowClick}
                 >
                     {row