fix(byo): read a stale gap in hours and days (TASK-645 item 7)

frontend/src/i18n/locales/en.json

@@ -1605,6 +1605,9 @@
     "available": "Ready on Commonly",
     "revoked": "Disconnected: key revoked",
     "stale": "Not seen in {{count}} min",
+    "staleHours": "Not seen in {{count}} h",
+    "staleDays_one": "Not seen in {{count}} day",
+    "staleDays_other": "Not seen in {{count}} days",
     "never": "Not connected yet",
     "reconnect": "Reconnect",
     "reconnectWaiting": "Waiting for your computer to reconnect this agent.",

frontend/src/i18n/locales/zh-CN.json

@@ -1665,6 +1665,8 @@
     "available": "可在 Commonly 使用",
     "revoked": "密钥已撤销，连接已断开",
     "stale": "已{{count}}分钟未连接",
+    "staleHours": "已{{count}}小时未连接",
+    "staleDays_other": "已{{count}}天未连接",
     "never": "尚未连接",
     "reconnect": "重新连接",
     "reconnectWaiting": "正在等待电脑重新连接此智能体。",

frontend/src/v2/__tests__/agentConnection.test.ts

@@ -20,3 +20,14 @@ it('shows elapsed minutes from the last poll', () => {
   expect(connectionLabel({ state: 'stale', lastSeenAt: '2026-10-23T15:54:00Z' }, t,
     Date.parse('2026-10-23T16:00:00Z'))).toBe('Not seen in 6 min');
 });
+
+it('reads an hour-plus gap in hours, and a day-plus gap in days', () => {
+  const now = Date.parse('2026-10-30T16:00:00Z');
+  // 6390 minutes is 106 hours: four days, the case that read "6390 min" on the page.
+  expect(connectionLabel({ state: 'stale', lastSeenAt: new Date(now - 6390 * 60000).toISOString() }, (k, o) => `${k}:${o?.count}`, now))
+    .toBe('agentConnection.staleDays:4');
+  expect(connectionLabel({ state: 'stale', lastSeenAt: new Date(now - 90 * 60000).toISOString() }, (k, o) => `${k}:${o?.count}`, now))
+    .toBe('agentConnection.staleHours:1');
+  expect(connectionLabel({ state: 'stale', lastSeenAt: new Date(now - 59 * 60000).toISOString() }, (k, o) => `${k}:${o?.count}`, now))
+    .toBe('agentConnection.stale:59');
+});

frontend/src/v2/utils/agentConnection.ts

@@ -14,5 +14,8 @@ export const connectionLabel = (
   if (connection.state === 'connected') return t('agentConnection.connected');
   const seen = connection.lastSeenAt ? new Date(connection.lastSeenAt).getTime() : NaN;
   const minutes = Number.isFinite(seen) ? Math.max(1, Math.floor((now - seen) / 60000)) : 1;
-  return t('agentConnection.stale', { count: minutes });
+  // Past an hour, minutes stop helping: 6390 min reads as four days.
+  if (minutes < 60) return t('agentConnection.stale', { count: minutes });
+  if (minutes < 1440) return t('agentConnection.staleHours', { count: Math.floor(minutes / 60) });
+  return t('agentConnection.staleDays', { count: Math.floor(minutes / 1440) });
 };