fix(keys): reactivate exhausted keys set to unlimited

backend/internal/service/api_key_service.go

@@ -574,8 +574,8 @@ func (s *APIKeyService) Update(ctx context.Context, id int64, userID int64, req
 	// Update quota fields
 	if req.Quota != nil {
 		apiKey.Quota = *req.Quota
-		// If quota is increased and status was quota_exhausted, reactivate
-		if apiKey.Status == StatusAPIKeyQuotaExhausted && *req.Quota > apiKey.QuotaUsed {
+		// If quota now has room, or is changed to unlimited, reactivate exhausted keys.
+		if apiKey.Status == StatusAPIKeyQuotaExhausted && (*req.Quota <= 0 || *req.Quota > apiKey.QuotaUsed) {
 			apiKey.Status = StatusActive
 		}
 	}

backend/internal/service/api_key_service_delete_test.go

@@ -27,7 +27,9 @@ type apiKeyRepoStub struct {
 	apiKey             *APIKey // GetKeyAndOwnerID 的返回值
 	getByIDErr         error   // GetKeyAndOwnerID 的错误返回值
 	deleteErr          error   // Delete 的错误返回值
+	updateErr          error   // Update 的错误返回值
 	deletedIDs         []int64 // 记录已删除的 API Key ID 列表
+	updatedKeys        []APIKey
 	allowListByUserID  bool
 	listByUserIDKeys   []APIKey
 	listByUserIDErr    error
@@ -74,7 +76,10 @@ func (s *apiKeyRepoStub) GetByKeyForAuth(ctx context.Context, key string) (*APIK
 }
 
 func (s *apiKeyRepoStub) Update(ctx context.Context, key *APIKey) error {
-	panic("unexpected Update call")
+	if key != nil {
+		s.updatedKeys = append(s.updatedKeys, *key)
+	}
+	return s.updateErr
 }
 
 // Delete 记录被删除的 API Key ID 并返回预设的错误。

backend/internal/service/api_key_service_quota_test.go

@@ -174,3 +174,27 @@ func TestAPIKeyService_UpdateQuotaUsed_UsesAtomicStatePath(t *testing.T) {
 	require.Equal(t, 0, repo.getByIDCalls, "fast path should not re-read API key by id")
 	require.Equal(t, []string{svc.authCacheKey("sk-test-quota")}, cache.deleteAuthKeys)
 }
+
+func TestAPIKeyService_Update_ReactivatesQuotaExhaustedWhenQuotaUnlimited(t *testing.T) {
+	repo := &apiKeyRepoStub{
+		apiKey: &APIKey{
+			ID:        10,
+			UserID:    7,
+			Key:       "sk-test-unlimited",
+			Status:    StatusAPIKeyQuotaExhausted,
+			Quota:     10,
+			QuotaUsed: 12,
+		},
+	}
+	svc := &APIKeyService{apiKeyRepo: repo}
+	quota := 0.0
+
+	updated, err := svc.Update(context.Background(), 10, 7, UpdateAPIKeyRequest{Quota: &quota})
+
+	require.NoError(t, err)
+	require.Equal(t, StatusActive, updated.Status)
+	require.Equal(t, 0.0, updated.Quota)
+	require.Len(t, repo.updatedKeys, 1)
+	require.Equal(t, StatusActive, repo.updatedKeys[0].Status)
+	require.Equal(t, 0.0, repo.updatedKeys[0].Quota)
+}

frontend/src/views/user/KeysView.vue

@@ -1068,7 +1068,7 @@ import TablePageLayout from '@/components/layout/TablePageLayout.vue'
 	import EndpointPopover from '@/components/keys/EndpointPopover.vue'
 	import GroupBadge from '@/components/common/GroupBadge.vue'
 	import GroupOptionItem from '@/components/common/GroupOptionItem.vue'
-	import type { ApiKey, Group, PublicSettings, SubscriptionType, GroupPlatform } from '@/types'
+	import type { ApiKey, Group, PublicSettings, SubscriptionType, GroupPlatform, UpdateApiKeyRequest } from '@/types'
 import type { Column } from '@/components/common/types'
 import type { BatchApiKeyUsageStats } from '@/api/usage'
 import { formatDateTime } from '@/utils/format'
@@ -1211,6 +1211,13 @@ const statusOptions = computed(() => [
   { value: 'inactive', label: t('common.inactive') }
 ])
 
+const shouldSubmitEditStatus = (key: ApiKey, status: 'active' | 'inactive') => {
+  if (key.status === 'quota_exhausted' || key.status === 'expired') {
+    return status === 'active'
+  }
+  return true
+}
+
 // Filter dropdown options
 const groupFilterOptions = computed(() => [
   { value: '', label: t('keys.allGroups') },
@@ -1542,10 +1549,9 @@ const handleSubmit = async () => {
   submitting.value = true
   try {
     if (showEditModal.value && selectedKey.value) {
-      await keysAPI.update(selectedKey.value.id, {
+      const updates: UpdateApiKeyRequest = {
         name: formData.value.name,
         group_id: formData.value.group_id,
-        status: formData.value.status,
         ip_whitelist: ipWhitelist,
         ip_blacklist: ipBlacklist,
         quota: quota,
@@ -1553,7 +1559,11 @@ const handleSubmit = async () => {
         rate_limit_5h: rateLimitData.rate_limit_5h,
         rate_limit_1d: rateLimitData.rate_limit_1d,
         rate_limit_7d: rateLimitData.rate_limit_7d,
-      })
+      }
+      if (shouldSubmitEditStatus(selectedKey.value, formData.value.status)) {
+        updates.status = formData.value.status
+      }
+      await keysAPI.update(selectedKey.value.id, updates)
       appStore.showSuccess(t('keys.keyUpdatedSuccess'))
     } else {
       const customKey = formData.value.use_custom_key ? formData.value.custom_key : undefined