fix(account): prevent quota-exceeded API key/Bedrock accounts from being scheduled

Add quota exceeded check to IsSchedulable() and refactor
shouldClearStickySession to delegate to IsSchedulable(), eliminating
duplicated logic and fixing missed overload/rate-limit/expired checks.
Frontend displays quota exceeded status independently via quota fields.

backend/internal/service/account.go

@@ -121,6 +121,9 @@ func (a *Account) IsSchedulable() bool {
 	if a.TempUnschedulableUntil != nil && now.Before(*a.TempUnschedulableUntil) {
 		return false
 	}
+	if a.IsAPIKeyOrBedrock() && a.IsQuotaExceeded() {
+		return false
+	}
 	return true
 }
 

backend/internal/service/account_quota_schedulable_test.go

@@ -0,0 +1,123 @@
+//go:build unit
+
+package service
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestAccountIsSchedulable_QuotaExceeded(t *testing.T) {
+	now := time.Now()
+
+	tests := []struct {
+		name    string
+		account *Account
+		want    bool
+	}{
+		{
+			name: "apikey daily quota exceeded",
+			account: &Account{
+				Status:      StatusActive,
+				Schedulable: true,
+				Type:        AccountTypeAPIKey,
+				Extra: map[string]any{
+					"quota_daily_limit": 10.0,
+					"quota_daily_used":  10.0,
+					"quota_daily_start": now.Add(-1 * time.Hour).Format(time.RFC3339),
+				},
+			},
+			want: false,
+		},
+		{
+			name: "apikey weekly quota exceeded",
+			account: &Account{
+				Status:      StatusActive,
+				Schedulable: true,
+				Type:        AccountTypeAPIKey,
+				Extra: map[string]any{
+					"quota_weekly_limit": 50.0,
+					"quota_weekly_used":  50.0,
+					"quota_weekly_start": now.Add(-2 * 24 * time.Hour).Format(time.RFC3339),
+				},
+			},
+			want: false,
+		},
+		{
+			name: "apikey total quota exceeded",
+			account: &Account{
+				Status:      StatusActive,
+				Schedulable: true,
+				Type:        AccountTypeAPIKey,
+				Extra: map[string]any{
+					"quota_limit": 100.0,
+					"quota_used":  100.0,
+				},
+			},
+			want: false,
+		},
+		{
+			name: "apikey quota not exceeded",
+			account: &Account{
+				Status:      StatusActive,
+				Schedulable: true,
+				Type:        AccountTypeAPIKey,
+				Extra: map[string]any{
+					"quota_daily_limit": 10.0,
+					"quota_daily_used":  5.0,
+					"quota_daily_start": now.Add(-1 * time.Hour).Format(time.RFC3339),
+				},
+			},
+			want: true,
+		},
+		{
+			name: "apikey expired daily period restores schedulable",
+			account: &Account{
+				Status:      StatusActive,
+				Schedulable: true,
+				Type:        AccountTypeAPIKey,
+				Extra: map[string]any{
+					"quota_daily_limit": 10.0,
+					"quota_daily_used":  10.0,
+					"quota_daily_start": now.Add(-25 * time.Hour).Format(time.RFC3339),
+				},
+			},
+			want: true,
+		},
+		{
+			name: "oauth ignores quota exceeded",
+			account: &Account{
+				Status:      StatusActive,
+				Schedulable: true,
+				Type:        AccountTypeOAuth,
+				Extra: map[string]any{
+					"quota_daily_limit": 10.0,
+					"quota_daily_used":  10.0,
+					"quota_daily_start": now.Add(-1 * time.Hour).Format(time.RFC3339),
+				},
+			},
+			want: true,
+		},
+		{
+			name: "bedrock quota exceeded",
+			account: &Account{
+				Status:      StatusActive,
+				Schedulable: true,
+				Type:        AccountTypeBedrock,
+				Extra: map[string]any{
+					"quota_limit": 200.0,
+					"quota_used":  200.0,
+				},
+			},
+			want: false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			require.Equal(t, tt.want, tt.account.IsSchedulable())
+		})
+	}
+}

backend/internal/service/gateway_service.go

@@ -435,26 +435,19 @@ func prefetchedStickyAccountIDFromContext(ctx context.Context, groupID *int64) i
 }
 
 // shouldClearStickySession 检查账号是否处于不可调度状态，需要清理粘性会话绑定。
-// 当账号状态为错误、禁用、不可调度、处于临时不可调度期间，
-// 或请求的模型处于限流状态时，返回 true。
-// 这确保后续请求不会继续使用不可用的账号。
+// 委托 IsSchedulable() 判断账号级可调度性（状态、配额、过载、限流等），
+// 额外检查模型级限流。
 //
 // shouldClearStickySession checks if an account is in an unschedulable state
 // and the sticky session binding should be cleared.
-// Returns true when account status is error/disabled, schedulable is false,
-// within temporary unschedulable period, or the requested model is rate-limited.
-// This ensures subsequent requests won't continue using unavailable accounts.
+// Delegates to IsSchedulable() for account-level checks, plus model-level rate limiting.
 func shouldClearStickySession(account *Account, requestedModel string) bool {
 	if account == nil {
 		return false
 	}
-	if account.Status == StatusError || account.Status == StatusDisabled || !account.Schedulable {
+	if !account.IsSchedulable() {
 		return true
 	}
-	if account.TempUnschedulableUntil != nil && time.Now().Before(*account.TempUnschedulableUntil) {
-		return true
-	}
-	// 检查模型限流和 scope 限流，有限流即清除粘性会话
 	if remaining := account.GetRateLimitRemainingTimeWithContext(context.Background(), requestedModel); remaining > 0 {
 		return true
 	}

backend/internal/service/sticky_session_test.go

@@ -15,20 +15,8 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
-// TestShouldClearStickySession 测试粘性会话清理判断逻辑。
-// 验证在以下情况下是否正确判断需要清理粘性会话：
-//   - nil 账号：不清理（返回 false）
-//   - 状态为错误或禁用：清理
-//   - 不可调度：清理
-//   - 临时不可调度且未过期：清理
-//   - 临时不可调度已过期：不清理
-//   - 正常可调度状态：不清理
-//   - 模型限流（任意时长）：清理
-//
-// TestShouldClearStickySession tests the sticky session clearing logic.
-// Verifies correct behavior for various account states including:
-// nil account, error/disabled status, unschedulable, temporary unschedulable,
-// and model rate limiting scenarios.
+// TestShouldClearStickySession tests sticky session clearing via IsSchedulable() delegation
+// plus model-level rate limiting.
 func TestShouldClearStickySession(t *testing.T) {
 	now := time.Now()
 	future := now.Add(1 * time.Hour)
@@ -101,6 +89,56 @@ func TestShouldClearStickySession(t *testing.T) {
 			requestedModel: "claude-opus-4", // 请求不同模型
 			want:           false,           // 不同模型不受影响
 		},
+		{
+			name: "apikey quota exceeded",
+			account: &Account{
+				Status:      StatusActive,
+				Schedulable: true,
+				Type:        AccountTypeAPIKey,
+				Extra: map[string]any{
+					"quota_daily_limit": 10.0,
+					"quota_daily_used":  10.0,
+					"quota_daily_start": now.Add(-1 * time.Hour).Format(time.RFC3339),
+				},
+			},
+			requestedModel: "",
+			want:           true,
+		},
+		{
+			name: "oauth quota exceeded not cleared",
+			account: &Account{
+				Status:      StatusActive,
+				Schedulable: true,
+				Type:        AccountTypeOAuth,
+				Extra: map[string]any{
+					"quota_daily_limit": 10.0,
+					"quota_daily_used":  10.0,
+					"quota_daily_start": now.Add(-1 * time.Hour).Format(time.RFC3339),
+				},
+			},
+			requestedModel: "",
+			want:           false,
+		},
+		{
+			name: "overloaded account",
+			account: &Account{
+				Status:       StatusActive,
+				Schedulable:  true,
+				OverloadUntil: &future,
+			},
+			requestedModel: "",
+			want:           true,
+		},
+		{
+			name: "account-level rate limited",
+			account: &Account{
+				Status:           StatusActive,
+				Schedulable:      true,
+				RateLimitResetAt: &future,
+			},
+			requestedModel: "",
+			want:           true,
+		},
 	}
 
 	for _, tt := range tests {

frontend/src/components/account/AccountStatusIndicator.vue

@@ -284,6 +284,16 @@ const hasError = computed(() => {
   return props.account.status === 'error'
 })
 
+const isQuotaExceeded = computed(() => {
+  const exceeded = (used?: number | null, limit?: number | null) =>
+    typeof limit === 'number' && limit > 0 && typeof used === 'number' && used >= limit
+  return (
+    exceeded(props.account.quota_used, props.account.quota_limit) ||
+    exceeded(props.account.quota_daily_used, props.account.quota_daily_limit) ||
+    exceeded(props.account.quota_weekly_used, props.account.quota_weekly_limit)
+  )
+})
+
 // Computed: countdown text for rate limit (429)
 const rateLimitCountdown = computed(() => {
   return formatCountdown(props.account.rate_limit_reset_at)
@@ -307,19 +317,16 @@ const statusClass = computed(() => {
   if (isTempUnschedulable.value) {
     return 'badge-warning'
   }
+  if (props.account.status !== 'active') {
+    return props.account.status === 'error' ? 'badge-danger' : 'badge-gray'
+  }
+  if (isQuotaExceeded.value) {
+    return 'badge-warning'
+  }
   if (!props.account.schedulable) {
     return 'badge-gray'
   }
-  switch (props.account.status) {
-    case 'active':
   return 'badge-success'
-    case 'inactive':
-      return 'badge-gray'
-    case 'error':
-      return 'badge-danger'
-    default:
-      return 'badge-gray'
-  }
 })
 
 // Computed: status text
@@ -330,6 +337,12 @@ const statusText = computed(() => {
   if (isTempUnschedulable.value) {
     return t('admin.accounts.status.tempUnschedulable')
   }
+  if (props.account.status !== 'active') {
+    return t(`admin.accounts.status.${props.account.status}`)
+  }
+  if (isQuotaExceeded.value) {
+    return t('admin.accounts.status.quotaExceeded')
+  }
   if (!props.account.schedulable) {
     return t('admin.accounts.status.paused')
   }

frontend/src/i18n/locales/en.ts

@@ -2126,6 +2126,7 @@ export default {
         rateLimited: 'Rate Limited',
         overloaded: 'Overloaded',
         tempUnschedulable: 'Temp Unschedulable',
+        quotaExceeded: 'Quota Exceeded',
         unschedulable: 'Unschedulable',
         rateLimitedUntil: 'Rate limited and removed from scheduling. Auto resumes at {time}',
         rateLimitedAutoResume: 'Auto resumes in {time}',

frontend/src/i18n/locales/zh.ts

@@ -2315,6 +2315,7 @@ export default {
         rateLimited: '限流中',
         overloaded: '过载中',
         tempUnschedulable: '临时不可调度',
+        quotaExceeded: '配额超限',
         unschedulable: '不可调度',
         rateLimitedUntil: '限流中，当前不参与调度，预计 {time} 自动恢复',
         rateLimitedAutoResume: '{time} 自动恢复',