fix: address audit findings across websearch, notify, and channel pricing

Backend fixes:
- Fix balance notify ignoring percentage threshold type (was treating
  percentage value as fixed USD amount)
- Remove dead code parseJSONStringArray
- Add ImageOutputTokens to tryModelFilePricing calculation
- Unify zero-value check: cost == 0 → cost <= 0 in calculateTokenStatsCost
- Use MarshalNotifyEmails instead of json.Marshal for consistency
- Rename quotaDim.oldUsed → currentUsed for clarity
- Extract HTML email templates to const variables (function ≤30 lines)

Test fixes:
- Rewrite account_websearch_test.go for GetWebSearchEmulationMode tri-state
- Add 6 tryModelFilePricing test cases

Frontend fixes:
- Replace hardcoded '未命名' with i18n key
- Extract getBillingModeLabel/getBillingModeBadgeClass to shared utils
- Replace inline type with imported NotifyEmailEntry
- Pass platform to AccountStats pricing rules via inferRulePlatform()
- Add billing mode constants (BILLING_MODE_TOKEN/PER_REQUEST/IMAGE)

backend/internal/service/account_stats_pricing.go

@@ -57,7 +57,8 @@ func tryModelFilePricing(billingService *BillingService, model string, tokens Us
 	cost := float64(tokens.InputTokens)*pricing.InputPricePerToken +
 		float64(tokens.OutputTokens)*pricing.OutputPricePerToken +
 		float64(tokens.CacheCreationTokens)*pricing.CacheCreationPricePerToken +
-		float64(tokens.CacheReadTokens)*pricing.CacheReadPricePerToken
+		float64(tokens.CacheReadTokens)*pricing.CacheReadPricePerToken +
+		float64(tokens.ImageOutputTokens)*pricing.ImageOutputPricePerToken
 	if cost <= 0 {
 		return nil
 	}
@@ -194,7 +195,7 @@ func calculateTokenStatsCost(pricing *ChannelModelPricing, tokens UsageTokens) *
 		float64(tokens.CacheCreationTokens)*deref(pricing.CacheWritePrice) +
 		float64(tokens.CacheReadTokens)*deref(pricing.CacheReadPrice) +
 		float64(tokens.ImageOutputTokens)*deref(pricing.ImageOutputPrice)
-	if cost == 0 {
+	if cost <= 0 {
 		return nil
 	}
 	return &cost

backend/internal/service/account_stats_pricing_test.go

@@ -428,3 +428,102 @@ func TestTryCustomRules_RuleMatchesButModelNot_ContinuesToNext(t *testing.T) {
 	require.NotNil(t, result)
 	require.InDelta(t, 5.0, *result, 1e-12) // 使用规则2
 }
+
+// ---------------------------------------------------------------------------
+// tryModelFilePricing
+// ---------------------------------------------------------------------------
+
+// newTestBillingServiceWithPrices creates a BillingService with pre-populated
+// fallback prices for testing. No config or pricing service is needed.
+// The key must match what getFallbackPricing resolves to for a given model name.
+// E.g., model "claude-sonnet-4" resolves to key "claude-sonnet-4".
+func newTestBillingServiceWithPrices(prices map[string]*ModelPricing) *BillingService {
+	return &BillingService{
+		fallbackPrices: prices,
+	}
+}
+
+func TestTryModelFilePricing_Success(t *testing.T) {
+	bs := newTestBillingServiceWithPrices(map[string]*ModelPricing{
+		"claude-sonnet-4": {
+			InputPricePerToken:  0.001,
+			OutputPricePerToken: 0.002,
+		},
+	})
+	tokens := UsageTokens{InputTokens: 100, OutputTokens: 50}
+	result := tryModelFilePricing(bs, "claude-sonnet-4", tokens)
+	require.NotNil(t, result)
+	// 100*0.001 + 50*0.002 = 0.1 + 0.1 = 0.2
+	require.InDelta(t, 0.2, *result, 1e-12)
+}
+
+func TestTryModelFilePricing_PricingNotFound(t *testing.T) {
+	// "nonexistent-model" does not match any fallback pattern
+	bs := newTestBillingServiceWithPrices(map[string]*ModelPricing{})
+	tokens := UsageTokens{InputTokens: 100, OutputTokens: 50}
+	result := tryModelFilePricing(bs, "nonexistent-model", tokens)
+	require.Nil(t, result)
+}
+
+func TestTryModelFilePricing_NilFallback(t *testing.T) {
+	// getFallbackPricing returns nil when key maps to nil
+	bs := newTestBillingServiceWithPrices(map[string]*ModelPricing{
+		"claude-sonnet-4": nil,
+	})
+	tokens := UsageTokens{InputTokens: 100}
+	result := tryModelFilePricing(bs, "claude-sonnet-4", tokens)
+	require.Nil(t, result)
+}
+
+func TestTryModelFilePricing_ZeroCost(t *testing.T) {
+	bs := newTestBillingServiceWithPrices(map[string]*ModelPricing{
+		"claude-sonnet-4": {
+			InputPricePerToken:  0.001,
+			OutputPricePerToken: 0.002,
+		},
+	})
+	tokens := UsageTokens{} // all zero tokens → cost = 0 → nil
+	result := tryModelFilePricing(bs, "claude-sonnet-4", tokens)
+	require.Nil(t, result)
+}
+
+func TestTryModelFilePricing_WithImageOutput(t *testing.T) {
+	bs := newTestBillingServiceWithPrices(map[string]*ModelPricing{
+		"claude-sonnet-4": {
+			InputPricePerToken:       0.001,
+			OutputPricePerToken:      0.002,
+			ImageOutputPricePerToken: 0.01,
+		},
+	})
+	tokens := UsageTokens{
+		InputTokens:       100,
+		OutputTokens:      50,
+		ImageOutputTokens: 10,
+	}
+	result := tryModelFilePricing(bs, "claude-sonnet-4", tokens)
+	require.NotNil(t, result)
+	// 100*0.001 + 50*0.002 + 10*0.01 = 0.1 + 0.1 + 0.1 = 0.3
+	require.InDelta(t, 0.3, *result, 1e-12)
+}
+
+func TestTryModelFilePricing_WithCacheTokens(t *testing.T) {
+	bs := newTestBillingServiceWithPrices(map[string]*ModelPricing{
+		"claude-sonnet-4": {
+			InputPricePerToken:         0.001,
+			OutputPricePerToken:        0.002,
+			CacheCreationPricePerToken: 0.003,
+			CacheReadPricePerToken:     0.0005,
+		},
+	})
+	tokens := UsageTokens{
+		InputTokens:         100,
+		OutputTokens:        50,
+		CacheCreationTokens: 200,
+		CacheReadTokens:     300,
+	}
+	result := tryModelFilePricing(bs, "claude-sonnet-4", tokens)
+	require.NotNil(t, result)
+	// 100*0.001 + 50*0.002 + 200*0.003 + 300*0.0005
+	// = 0.1 + 0.1 + 0.6 + 0.15 = 0.95
+	require.InDelta(t, 0.95, *result, 1e-12)
+}

backend/internal/service/account_websearch_test.go

+//go:build unit
+
 package service
 
 import (
@@ -6,66 +8,98 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
-func TestAccount_IsWebSearchEmulationEnabled_Enabled(t *testing.T) {
+func TestGetWebSearchEmulationMode_Enabled(t *testing.T) {
 	a := &Account{
 		Platform: PlatformAnthropic,
 		Type:     AccountTypeAPIKey,
-		Extra:    map[string]any{featureKeyWebSearchEmulation: true},
+		Extra:    map[string]any{featureKeyWebSearchEmulation: "enabled"},
 	}
-	require.True(t, a.IsWebSearchEmulationEnabled())
+	require.Equal(t, WebSearchModeEnabled, a.GetWebSearchEmulationMode())
 }
 
-func TestAccount_IsWebSearchEmulationEnabled_Disabled(t *testing.T) {
+func TestGetWebSearchEmulationMode_Disabled(t *testing.T) {
 	a := &Account{
 		Platform: PlatformAnthropic,
 		Type:     AccountTypeAPIKey,
-		Extra:    map[string]any{featureKeyWebSearchEmulation: false},
+		Extra:    map[string]any{featureKeyWebSearchEmulation: "disabled"},
 	}
-	require.False(t, a.IsWebSearchEmulationEnabled())
+	require.Equal(t, WebSearchModeDisabled, a.GetWebSearchEmulationMode())
 }
 
-func TestAccount_IsWebSearchEmulationEnabled_MissingField(t *testing.T) {
+func TestGetWebSearchEmulationMode_Default(t *testing.T) {
 	a := &Account{
 		Platform: PlatformAnthropic,
 		Type:     AccountTypeAPIKey,
-		Extra:    map[string]any{},
+		Extra:    map[string]any{featureKeyWebSearchEmulation: "default"},
+	}
+	require.Equal(t, WebSearchModeDefault, a.GetWebSearchEmulationMode())
+}
+
+func TestGetWebSearchEmulationMode_UnknownString(t *testing.T) {
+	a := &Account{
+		Platform: PlatformAnthropic,
+		Type:     AccountTypeAPIKey,
+		Extra:    map[string]any{featureKeyWebSearchEmulation: "unknown"},
 	}
-	require.False(t, a.IsWebSearchEmulationEnabled())
+	require.Equal(t, WebSearchModeDefault, a.GetWebSearchEmulationMode())
 }
 
-func TestAccount_IsWebSearchEmulationEnabled_WrongType(t *testing.T) {
+func TestGetWebSearchEmulationMode_OldBoolTrue(t *testing.T) {
 	a := &Account{
 		Platform: PlatformAnthropic,
 		Type:     AccountTypeAPIKey,
-		Extra:    map[string]any{featureKeyWebSearchEmulation: "true"},
+		Extra:    map[string]any{featureKeyWebSearchEmulation: true},
 	}
-	require.False(t, a.IsWebSearchEmulationEnabled())
+	// bool is not a string, type assertion fails → default
+	require.Equal(t, WebSearchModeDefault, a.GetWebSearchEmulationMode())
 }
 
-func TestAccount_IsWebSearchEmulationEnabled_NilExtra(t *testing.T) {
-	a := &Account{Platform: PlatformAnthropic, Type: AccountTypeAPIKey, Extra: nil}
-	require.False(t, a.IsWebSearchEmulationEnabled())
+func TestGetWebSearchEmulationMode_OldBoolFalse(t *testing.T) {
+	a := &Account{
+		Platform: PlatformAnthropic,
+		Type:     AccountTypeAPIKey,
+		Extra:    map[string]any{featureKeyWebSearchEmulation: false},
+	}
+	require.Equal(t, WebSearchModeDefault, a.GetWebSearchEmulationMode())
 }
 
-func TestAccount_IsWebSearchEmulationEnabled_NilAccount(t *testing.T) {
+func TestGetWebSearchEmulationMode_NilAccount(t *testing.T) {
 	var a *Account
-	require.False(t, a.IsWebSearchEmulationEnabled())
+	require.Equal(t, WebSearchModeDefault, a.GetWebSearchEmulationMode())
 }
 
-func TestAccount_IsWebSearchEmulationEnabled_NonAnthropicPlatform(t *testing.T) {
+func TestGetWebSearchEmulationMode_NilExtra(t *testing.T) {
+	a := &Account{
+		Platform: PlatformAnthropic,
+		Type:     AccountTypeAPIKey,
+		Extra:    nil,
+	}
+	require.Equal(t, WebSearchModeDefault, a.GetWebSearchEmulationMode())
+}
+
+func TestGetWebSearchEmulationMode_MissingField(t *testing.T) {
+	a := &Account{
+		Platform: PlatformAnthropic,
+		Type:     AccountTypeAPIKey,
+		Extra:    map[string]any{},
+	}
+	require.Equal(t, WebSearchModeDefault, a.GetWebSearchEmulationMode())
+}
+
+func TestGetWebSearchEmulationMode_NonAnthropicPlatform(t *testing.T) {
 	a := &Account{
 		Platform: PlatformOpenAI,
 		Type:     AccountTypeAPIKey,
-		Extra:    map[string]any{featureKeyWebSearchEmulation: true},
+		Extra:    map[string]any{featureKeyWebSearchEmulation: "enabled"},
 	}
-	require.False(t, a.IsWebSearchEmulationEnabled())
+	require.Equal(t, WebSearchModeDefault, a.GetWebSearchEmulationMode())
 }
 
-func TestAccount_IsWebSearchEmulationEnabled_NonAPIKeyType(t *testing.T) {
+func TestGetWebSearchEmulationMode_NonAPIKeyType(t *testing.T) {
 	a := &Account{
 		Platform: PlatformAnthropic,
 		Type:     AccountTypeOAuth,
-		Extra:    map[string]any{featureKeyWebSearchEmulation: true},
+		Extra:    map[string]any{featureKeyWebSearchEmulation: "enabled"},
 	}
-	require.False(t, a.IsWebSearchEmulationEnabled())
+	require.Equal(t, WebSearchModeDefault, a.GetWebSearchEmulationMode())
 }

backend/internal/service/balance_notify_service.go

@@ -2,7 +2,6 @@ package service
 
 import (
 	"context"
-	"encoding/json"
 	"fmt"
 	"html"
 	"log/slog"
@@ -14,6 +13,10 @@ import (
 const (
 	emailSendTimeout = 30 * time.Second
 
+	// Threshold type values
+	thresholdTypeFixed      = "fixed"
+	thresholdTypePercentage = "percentage"
+
 	// Quota dimension labels
 	quotaDimDaily  = "daily"
 	quotaDimWeekly = "weekly"
@@ -48,6 +51,15 @@ func NewBalanceNotifyService(emailService *EmailService, settingRepo SettingRepo
 	}
 }
 
+// resolveBalanceThreshold returns the effective balance threshold.
+// For percentage type, it computes threshold = totalRecharged * percentage / 100.
+func resolveBalanceThreshold(threshold float64, thresholdType string, totalRecharged float64) float64 {
+	if thresholdType == thresholdTypePercentage && totalRecharged > 0 {
+		return totalRecharged * threshold / 100
+	}
+	return threshold
+}
+
 // CheckBalanceAfterDeduction checks if balance crossed below threshold after deduction.
 // oldBalance is the balance before deduction, cost is the amount deducted.
 // Notification is sent only on first crossing: oldBalance >= threshold && newBalance < threshold.
@@ -73,8 +85,13 @@ func (s *BalanceNotifyService) CheckBalanceAfterDeduction(ctx context.Context, u
 		return
 	}
 
+	effectiveThreshold := resolveBalanceThreshold(threshold, user.BalanceNotifyThresholdType, user.TotalRecharged)
+	if effectiveThreshold <= 0 {
+		return
+	}
+
 	newBalance := oldBalance - cost
-	if oldBalance >= threshold && newBalance < threshold {
+	if oldBalance >= effectiveThreshold && newBalance < effectiveThreshold {
 		siteName := s.getSiteName(ctx)
 		recipients := s.collectBalanceNotifyRecipients(user)
 		go func() {
@@ -83,7 +100,7 @@ func (s *BalanceNotifyService) CheckBalanceAfterDeduction(ctx context.Context, u
 					slog.Error("panic in balance notification", "recover", r)
 				}
 			}()
-			s.sendBalanceLowEmails(recipients, user.Username, user.Email, newBalance, threshold, siteName)
+			s.sendBalanceLowEmails(recipients, user.Username, user.Email, newBalance, effectiveThreshold, siteName)
 		}()
 	}
 }
@@ -94,14 +111,14 @@ type quotaDim struct {
 	enabled       bool
 	threshold     float64
 	thresholdType string // "fixed" (default) or "percentage"
-	oldUsed       float64
+	currentUsed   float64
 	limit         float64
 }
 
 // resolvedThreshold returns the effective threshold value.
 // For percentage type, it computes threshold = limit * percentage / 100.
 func (d quotaDim) resolvedThreshold() float64 {
-	if d.thresholdType == "percentage" && d.limit > 0 {
+	if d.thresholdType == thresholdTypePercentage && d.limit > 0 {
 		return d.limit * d.threshold / 100
 	}
 	return d.threshold
@@ -150,7 +167,7 @@ func (s *BalanceNotifyService) fetchFreshAccount(ctx context.Context, snapshot *
 }
 
 // checkQuotaDimCrossings iterates quota dimensions and sends alerts for threshold crossings.
-// freshAccount has post-increment values; oldUsed is reconstructed as freshUsed - cost.
+// freshAccount has post-increment values; pre-increment is reconstructed as currentUsed - cost.
 func (s *BalanceNotifyService) checkQuotaDimCrossings(freshAccount *Account, cost float64, adminEmails []string, siteName string) {
 	for _, dim := range buildQuotaDims(freshAccount) {
 		if !dim.enabled || dim.threshold <= 0 {
@@ -160,10 +177,10 @@ func (s *BalanceNotifyService) checkQuotaDimCrossings(freshAccount *Account, cos
 		if effectiveThreshold <= 0 {
 			continue
 		}
-		// dim.oldUsed is actually the post-increment value from fresh DB data;
+		// currentUsed is the post-increment value from fresh DB data;
 		// reconstruct pre-increment value to detect threshold crossing.
-		newUsed := dim.oldUsed
-		oldUsed := dim.oldUsed - cost
+		newUsed := dim.currentUsed
+		oldUsed := dim.currentUsed - cost
 		if oldUsed < effectiveThreshold && newUsed >= effectiveThreshold {
 			s.asyncSendQuotaAlert(adminEmails, freshAccount.Name, dim, newUsed, effectiveThreshold, siteName)
 		}
@@ -309,10 +326,9 @@ func (s *BalanceNotifyService) sendQuotaAlertEmails(adminEmails []string, accoun
 	s.sendEmails(adminEmails, subject, body, "account", accountName, "dimension", dimension)
 }
 
-// buildBalanceLowEmailBody builds HTML email for balance low notification.
-// Lines exceed 30 due to inline HTML template (not splittable).
-func (s *BalanceNotifyService) buildBalanceLowEmailBody(userName string, balance, threshold float64, siteName string) string {
-	return fmt.Sprintf(`<!DOCTYPE html>
+// balanceLowEmailTemplate is the HTML template for balance low notifications.
+// Format args: siteName, userName, userName, balance, threshold, threshold.
+const balanceLowEmailTemplate = `<!DOCTYPE html>
 <html>
 <head>
     <meta charset="UTF-8">
@@ -344,17 +360,11 @@ func (s *BalanceNotifyService) buildBalanceLowEmailBody(userName string, balance
         <div class="footer"><p>此邮件由系统自动发送，请勿回复。</p></div>
     </div>
 </body>
-</html>`, siteName, userName, userName, balance, threshold, threshold)
-}
+</html>`
 
-// buildQuotaAlertEmailBody builds HTML email for account quota alert.
-// Lines exceed 30 due to inline HTML template (not splittable).
-func (s *BalanceNotifyService) buildQuotaAlertEmailBody(accountName, dimLabel string, used, limit, threshold float64, siteName string) string {
-	limitStr := fmt.Sprintf("$%.2f", limit)
-	if limit <= 0 {
-		limitStr = "无限制 / Unlimited"
-	}
-	return fmt.Sprintf(`<!DOCTYPE html>
+// quotaAlertEmailTemplate is the HTML template for account quota alert notifications.
+// Format args: siteName, accountName, dimLabel, used, limitStr, threshold.
+const quotaAlertEmailTemplate = `<!DOCTYPE html>
 <html>
 <head>
     <meta charset="UTF-8">
@@ -389,18 +399,19 @@ func (s *BalanceNotifyService) buildQuotaAlertEmailBody(accountName, dimLabel st
         <div class="footer"><p>此邮件由系统自动发送，请勿回复。</p></div>
     </div>
 </body>
-</html>`, siteName, accountName, dimLabel, used, limitStr, threshold)
+</html>`
+
+// buildBalanceLowEmailBody builds HTML email for balance low notification.
+func (s *BalanceNotifyService) buildBalanceLowEmailBody(userName string, balance, threshold float64, siteName string) string {
+	return fmt.Sprintf(balanceLowEmailTemplate, siteName, userName, userName, balance, threshold, threshold)
 }
 
-// parseJSONStringArray parses a JSON string array, returns nil on error.
-func parseJSONStringArray(raw string) []string {
-	raw = strings.TrimSpace(raw)
-	if raw == "" || raw == "[]" {
-		return nil
-	}
-	var result []string
-	if err := json.Unmarshal([]byte(raw), &result); err != nil {
-		return nil
+// buildQuotaAlertEmailBody builds HTML email for account quota alert.
+func (s *BalanceNotifyService) buildQuotaAlertEmailBody(accountName, dimLabel string, used, limit, threshold float64, siteName string) string {
+	limitStr := fmt.Sprintf("$%.2f", limit)
+	if limit <= 0 {
+		limitStr = "无限制 / Unlimited"
 	}
-	return result
+	return fmt.Sprintf(quotaAlertEmailTemplate, siteName, accountName, dimLabel, used, limitStr, threshold)
 }
+

backend/internal/service/setting_service.go

@@ -627,11 +627,7 @@ func (s *SettingService) UpdateSettings(ctx context.Context, settings *SystemSet
 	updates[SettingKeyBalanceLowNotifyEnabled] = strconv.FormatBool(settings.BalanceLowNotifyEnabled)
 	updates[SettingKeyBalanceLowNotifyThreshold] = strconv.FormatFloat(settings.BalanceLowNotifyThreshold, 'f', 8, 64)
 	updates[SettingKeyAccountQuotaNotifyEnabled] = strconv.FormatBool(settings.AccountQuotaNotifyEnabled)
-	accountQuotaNotifyEmailsJSON, err := json.Marshal(settings.AccountQuotaNotifyEmails)
-	if err != nil {
-		return fmt.Errorf("marshal account quota notify emails: %w", err)
-	}
-	updates[SettingKeyAccountQuotaNotifyEmails] = string(accountQuotaNotifyEmailsJSON)
+	updates[SettingKeyAccountQuotaNotifyEmails] = MarshalNotifyEmails(settings.AccountQuotaNotifyEmails)
 
 	err = s.settingRepo.SetMultiple(ctx, updates)
 	if err == nil {

frontend/src/components/admin/usage/UsageTable.vue

@@ -87,7 +87,7 @@
 
         <template #cell-billing_mode="{ row }">
           <span class="inline-flex items-center rounded px-2 py-0.5 text-xs font-medium" :class="getBillingModeBadgeClass(row.billing_mode)">
-            {{ getBillingModeLabel(row.billing_mode) }}
+            {{ getBillingModeLabel(row.billing_mode, t) }}
           </span>
         </template>
 
@@ -346,6 +346,7 @@ import { formatCacheTokens, formatMultiplier } from '@/utils/formatters'
 import { formatTokenPricePerMillion } from '@/utils/usagePricing'
 import { getUsageServiceTierLabel } from '@/utils/usageServiceTier'
 import { resolveUsageRequestType } from '@/utils/usageRequestType'
+import { getBillingModeLabel, getBillingModeBadgeClass } from '@/utils/billingMode'
 import DataTable from '@/components/common/DataTable.vue'
 import EmptyState from '@/components/common/EmptyState.vue'
 import Icon from '@/components/icons/Icon.vue'
@@ -399,17 +400,6 @@ const getRequestTypeBadgeClass = (row: AdminUsageLog): string => {
   return 'bg-amber-100 text-amber-800 dark:bg-amber-900 dark:text-amber-200'
 }
 
-const getBillingModeLabel = (mode: string | null | undefined): string => {
-  if (mode === 'per_request') return t('admin.usage.billingModePerRequest')
-  if (mode === 'image') return t('admin.usage.billingModeImage')
-  return t('admin.usage.billingModeToken')
-}
-
-const getBillingModeBadgeClass = (mode: string | null | undefined): string => {
-  if (mode === 'per_request') return 'bg-blue-100 text-blue-800 dark:bg-blue-900 dark:text-blue-200'
-  if (mode === 'image') return 'bg-green-100 text-green-800 dark:bg-green-900 dark:text-green-200'
-  return 'bg-gray-100 text-gray-800 dark:bg-gray-700 dark:text-gray-200'
-}
 
 
 const formatUserAgent = (ua: string): string => {

frontend/src/i18n/locales/en.ts

@@ -1889,7 +1889,8 @@ export default {
         searchAccountPlaceholder: 'Search accounts...',
         ruleAccountsHint: 'Leave empty to match all accounts',
         ruleModelPricing: 'Model Pricing',
-        noGroupsInChannel: 'No groups selected in platform tabs above'
+        noGroupsInChannel: 'No groups selected in platform tabs above',
+        unnamed: 'Unnamed'
       }
     },
 

frontend/src/i18n/locales/zh.ts

@@ -1968,7 +1968,8 @@ export default {
         searchAccountPlaceholder: '搜索账号...',
         ruleAccountsHint: '留空表示匹配所有账号',
         ruleModelPricing: '模型定价',
-        noGroupsInChannel: '上方平台标签页中未选择分组'
+        noGroupsInChannel: '上方平台标签页中未选择分组',
+        unnamed: '未命名'
       }
     },
 

frontend/src/utils/billingMode.ts

+export const BILLING_MODE_TOKEN = 'token'
+export const BILLING_MODE_PER_REQUEST = 'per_request'
+export const BILLING_MODE_IMAGE = 'image'
+
+export function getBillingModeLabel(mode: string | null | undefined, t: (key: string) => string): string {
+  switch (mode) {
+    case BILLING_MODE_PER_REQUEST: return t('admin.usage.billingModePerRequest')
+    case BILLING_MODE_IMAGE: return t('admin.usage.billingModeImage')
+    default: return t('admin.usage.billingModeToken')
+  }
+}
+
+export function getBillingModeBadgeClass(mode: string | null | undefined): string {
+  switch (mode) {
+    case BILLING_MODE_PER_REQUEST: return 'bg-purple-100 text-purple-700 dark:bg-purple-900/30 dark:text-purple-300'
+    case BILLING_MODE_IMAGE: return 'bg-pink-100 text-pink-700 dark:bg-pink-900/30 dark:text-pink-300'
+    default: return 'bg-blue-100 text-blue-700 dark:bg-blue-900/30 dark:text-blue-300'
+  }
+}

frontend/src/views/admin/ChannelsView.vue

@@ -980,15 +980,26 @@ function clearAllRuleAccountSearchState() {
   showRuleAccountDropdown.value = {}
 }
 
+function inferRulePlatform(groupIds: number[]): string {
+  const platforms = new Set<string>()
+  for (const gid of groupIds) {
+    const group = allGroups.value.find(g => g.id === gid)
+    if (group) platforms.add(group.platform)
+  }
+  return platforms.size === 1 ? [...platforms][0] : ''
+}
+
 function accountStatsRulesToAPI(): AccountStatsPricingRule[] {
-  return form.account_stats_pricing_rules.map(rule => ({
+  return form.account_stats_pricing_rules.map(rule => {
+    const platform = inferRulePlatform(rule.group_ids)
+    return {
       name: rule.name,
       group_ids: rule.group_ids,
       account_ids: rule.account_ids,
       pricing: rule.pricing
         .filter(p => p.models.length > 0)
         .map(p => ({
-        platform: '',
+          platform,
           models: p.models,
           billing_mode: p.billing_mode,
           input_price: mTokToPerToken(p.input_price),
@@ -999,7 +1010,8 @@ function accountStatsRulesToAPI(): AccountStatsPricingRule[] {
           per_request_price: p.per_request_price != null && p.per_request_price !== '' ? Number(p.per_request_price) : null,
           intervals: formIntervalsToAPI(p.intervals || [])
         }))
-  }))
+    }
+  })
 }
 
 // ── Form ↔ API conversion ──
@@ -1329,7 +1341,7 @@ async function handleSubmit() {
       const intervalErr = validateIntervals(entry.intervals)
       if (intervalErr) {
         const platformLabel = t('admin.groups.platforms.' + section.platform, section.platform)
-        const modelLabel = entry.models.join(', ') || '未命名'
+        const modelLabel = entry.models.join(', ') || t('admin.channels.form.unnamed')
         appStore.showError(`${platformLabel} - ${modelLabel}: ${intervalErr}`)
         activeTab.value = section.platform
         return

frontend/src/views/admin/SettingsView.vue

@@ -2804,7 +2804,7 @@ import type {
   WebSearchProviderConfig,
   WebSearchTestResult,
 } from '@/api/admin/settings'
-import type { AdminGroup, Proxy } from '@/types'
+import type { AdminGroup, Proxy, NotifyEmailEntry } from '@/types'
 import type { ProviderInstance } from '@/types/payment'
 import AppLayout from '@/components/layout/AppLayout.vue'
 import Icon from '@/components/icons/Icon.vue'
@@ -3028,7 +3028,7 @@ const form = reactive<SettingsForm>({
   balance_low_notify_enabled: false,
   balance_low_notify_threshold: 0,
   account_quota_notify_enabled: false,
-  account_quota_notify_emails: [] as { email: string; disabled: boolean; verified: boolean }[]
+  account_quota_notify_emails: [] as NotifyEmailEntry[]
 })
 
 // Proxies for web search emulation ProxySelector

frontend/src/views/user/UsageView.vue

@@ -192,7 +192,7 @@
           <template #cell-billing_mode="{ row }">
             <span class="inline-flex items-center rounded px-1.5 py-0.5 text-xs font-medium"
                   :class="getBillingModeBadgeClass(row.billing_mode)">
-              {{ getBillingModeLabel(row.billing_mode) }}
+              {{ getBillingModeLabel(row.billing_mode, t) }}
             </span>
           </template>
 
@@ -524,6 +524,7 @@ import { formatCacheTokens, formatMultiplier } from '@/utils/formatters'
 import { formatTokenPricePerMillion } from '@/utils/usagePricing'
 import { getUsageServiceTierLabel } from '@/utils/usageServiceTier'
 import { resolveUsageRequestType } from '@/utils/usageRequestType'
+import { getBillingModeLabel, getBillingModeBadgeClass } from '@/utils/billingMode'
 
 const { t } = useI18n()
 const appStore = useAppStore()
@@ -644,17 +645,6 @@ const getRequestTypeBadgeClass = (log: UsageLog): string => {
   return 'bg-amber-100 text-amber-800 dark:bg-amber-900 dark:text-amber-200'
 }
 
-const getBillingModeLabel = (mode: string | null | undefined): string => {
-  if (mode === 'per_request') return t('admin.usage.billingModePerRequest')
-  if (mode === 'image') return t('admin.usage.billingModeImage')
-  return t('admin.usage.billingModeToken')
-}
-
-const getBillingModeBadgeClass = (mode: string | null | undefined): string => {
-  if (mode === 'per_request') return 'bg-blue-100 text-blue-800 dark:bg-blue-900/30 dark:text-blue-200'
-  if (mode === 'image') return 'bg-green-100 text-green-800 dark:bg-green-900/30 dark:text-green-200'
-  return 'bg-gray-100 text-gray-800 dark:bg-gray-700 dark:text-gray-300'
-}
 
 const getRequestTypeExportText = (log: UsageLog): string => {
   const requestType = resolveUsageRequestType(log)
@@ -866,7 +856,7 @@ const exportToCSV = async () => {
         formatReasoningEffort(log.reasoning_effort),
         log.inbound_endpoint || '',
         getRequestTypeExportText(log),
-        getBillingModeLabel(log.billing_mode),
+        getBillingModeLabel(log.billing_mode, t),
         log.input_tokens,
         log.output_tokens,
         log.cache_read_tokens,