fix(oauth): 修复 OAuth 刷新后 Token 有效期不更新问题 (#324)

- 持久化刷新后的 `expires_at` 到 Provider Key SQL 更新链路
- 手动刷新接口优先返回本次刷新得到的过期时间
- 按当前 Key 字段重建 OAuth 状态快照，避免旧快照覆盖
- 前端刷新后防止旧列表数据回退覆盖新有效期

frontend/src/views/admin/PoolManagement.vue

@@ -2180,11 +2180,22 @@ async function handleRefreshOAuth(key: PoolKeyDetail) {
   refreshingOAuthKeyId.value = key.key_id
   try {
     const result = await refreshProviderOAuth(key.key_id)
+    const refreshedExpiresAt = typeof result.expires_at === 'number' ? result.expires_at : null
     const target = keyPage.value.keys.find(k => k.key_id === key.key_id)
     if (target) {
-      target.oauth_expires_at = result.expires_at ?? null
+      target.oauth_expires_at = refreshedExpiresAt
     }
     await loadKeys()
+    if (refreshedExpiresAt != null) {
+      const reloadedTarget = keyPage.value.keys.find(k => k.key_id === key.key_id)
+      if (
+        reloadedTarget
+        && (typeof reloadedTarget.oauth_expires_at !== 'number'
+          || reloadedTarget.oauth_expires_at < refreshedExpiresAt)
+      ) {
+        reloadedTarget.oauth_expires_at = refreshedExpiresAt
+      }
+    }
     const refreshedKey = keyPage.value.keys.find(k => k.key_id === key.key_id) ?? null
     const feedback = getOAuthRefreshFeedback({
       accountStateRecheckAttempted: result.account_state_recheck_attempted,