fix(openai): restore ws usage window display

backend/internal/handler/openai_gateway_handler.go

@@ -305,6 +305,9 @@ func (h *OpenAIGatewayHandler) Responses(c *gin.Context) {
 			return
 		}
 		if result != nil {
+			if account.Type == service.AccountTypeOAuth {
+				h.gatewayService.UpdateCodexUsageSnapshotFromHeaders(c.Request.Context(), account.ID, result.ResponseHeaders)
+			}
 			h.gatewayService.ReportOpenAIAccountScheduleResult(account.ID, true, result.FirstTokenMs)
 		} else {
 			h.gatewayService.ReportOpenAIAccountScheduleResult(account.ID, true, nil)
@@ -840,6 +843,9 @@ func (h *OpenAIGatewayHandler) ResponsesWebSocket(c *gin.Context) {
 			if turnErr != nil || result == nil {
 				return
 			}
+			if account.Type == service.AccountTypeOAuth {
+				h.gatewayService.UpdateCodexUsageSnapshotFromHeaders(ctx, account.ID, result.ResponseHeaders)
+			}
 			h.gatewayService.ReportOpenAIAccountScheduleResult(account.ID, true, result.FirstTokenMs)
 			h.submitUsageRecordTask(func(taskCtx context.Context) {
 				if err := h.gatewayService.RecordUsage(taskCtx, &service.OpenAIRecordUsageInput{

backend/internal/service/account_usage_service.go

 package service
 
 import (
+	"bytes"
 	"context"
+	"encoding/json"
 	"fmt"
 	"log"
+	"net/http"
 	"strings"
 	"sync"
 	"time"
 
+	httppool "github.com/Wei-Shaw/sub2api/internal/pkg/httpclient"
+	openaipkg "github.com/Wei-Shaw/sub2api/internal/pkg/openai"
 	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
 	"github.com/Wei-Shaw/sub2api/internal/pkg/timezone"
 	"github.com/Wei-Shaw/sub2api/internal/pkg/usagestats"
@@ -90,6 +95,7 @@ type antigravityUsageCache struct {
 const (
 	apiCacheTTL         = 3 * time.Minute
 	windowStatsCacheTTL = 1 * time.Minute
+	openAIProbeCacheTTL = 10 * time.Minute
 )
 
 // UsageCache 封装账户使用量相关的缓存
@@ -97,6 +103,7 @@ type UsageCache struct {
 	apiCache         sync.Map // accountID -> *apiUsageCache
 	windowStatsCache sync.Map // accountID -> *windowStatsCache
 	antigravityCache sync.Map // accountID -> *antigravityUsageCache
+	openAIProbeCache sync.Map // accountID -> time.Time
 }
 
 // NewUsageCache 创建 UsageCache 实例
@@ -224,6 +231,14 @@ func (s *AccountUsageService) GetUsage(ctx context.Context, accountID int64) (*U
 		return nil, fmt.Errorf("get account failed: %w", err)
 	}
 
+	if account.Platform == PlatformOpenAI && account.Type == AccountTypeOAuth {
+		usage, err := s.getOpenAIUsage(ctx, account)
+		if err == nil {
+			s.tryClearRecoverableAccountError(ctx, account)
+		}
+		return usage, err
+	}
+
 	if account.Platform == PlatformGemini {
 		usage, err := s.getGeminiUsage(ctx, account)
 		if err == nil {
@@ -288,6 +303,161 @@ func (s *AccountUsageService) GetUsage(ctx context.Context, accountID int64) (*U
 	return nil, fmt.Errorf("account type %s does not support usage query", account.Type)
 }
 
+func (s *AccountUsageService) getOpenAIUsage(ctx context.Context, account *Account) (*UsageInfo, error) {
+	now := time.Now()
+	usage := &UsageInfo{UpdatedAt: &now}
+
+	if account == nil {
+		return usage, nil
+	}
+
+	if progress := buildCodexUsageProgressFromExtra(account.Extra, "5h", now); progress != nil {
+		usage.FiveHour = progress
+	}
+	if progress := buildCodexUsageProgressFromExtra(account.Extra, "7d", now); progress != nil {
+		usage.SevenDay = progress
+	}
+
+	if (usage.FiveHour == nil || usage.SevenDay == nil) && s.shouldProbeOpenAICodexSnapshot(account.ID, now) {
+		if updates, err := s.probeOpenAICodexSnapshot(ctx, account); err == nil && len(updates) > 0 {
+			mergeAccountExtra(account, updates)
+			if usage.UpdatedAt == nil {
+				usage.UpdatedAt = &now
+			}
+			if progress := buildCodexUsageProgressFromExtra(account.Extra, "5h", now); progress != nil {
+				usage.FiveHour = progress
+			}
+			if progress := buildCodexUsageProgressFromExtra(account.Extra, "7d", now); progress != nil {
+				usage.SevenDay = progress
+			}
+		}
+	}
+
+	if s.usageLogRepo == nil {
+		return usage, nil
+	}
+
+	if stats, err := s.usageLogRepo.GetAccountWindowStats(ctx, account.ID, now.Add(-5*time.Hour)); err == nil {
+		windowStats := windowStatsFromAccountStats(stats)
+		if hasMeaningfulWindowStats(windowStats) {
+			if usage.FiveHour == nil {
+				usage.FiveHour = &UsageProgress{Utilization: 0}
+			}
+			usage.FiveHour.WindowStats = windowStats
+		}
+	}
+
+	if stats, err := s.usageLogRepo.GetAccountWindowStats(ctx, account.ID, now.Add(-7*24*time.Hour)); err == nil {
+		windowStats := windowStatsFromAccountStats(stats)
+		if hasMeaningfulWindowStats(windowStats) {
+			if usage.SevenDay == nil {
+				usage.SevenDay = &UsageProgress{Utilization: 0}
+			}
+			usage.SevenDay.WindowStats = windowStats
+		}
+	}
+
+	return usage, nil
+}
+
+func (s *AccountUsageService) shouldProbeOpenAICodexSnapshot(accountID int64, now time.Time) bool {
+	if s == nil || s.cache == nil || accountID <= 0 {
+		return true
+	}
+	if cached, ok := s.cache.openAIProbeCache.Load(accountID); ok {
+		if ts, ok := cached.(time.Time); ok && now.Sub(ts) < openAIProbeCacheTTL {
+			return false
+		}
+	}
+	s.cache.openAIProbeCache.Store(accountID, now)
+	return true
+}
+
+func (s *AccountUsageService) probeOpenAICodexSnapshot(ctx context.Context, account *Account) (map[string]any, error) {
+	if account == nil || !account.IsOAuth() {
+		return nil, nil
+	}
+	accessToken := account.GetOpenAIAccessToken()
+	if accessToken == "" {
+		return nil, fmt.Errorf("no access token available")
+	}
+	modelID := openaipkg.DefaultTestModel
+	payload := createOpenAITestPayload(modelID, true)
+	payloadBytes, err := json.Marshal(payload)
+	if err != nil {
+		return nil, fmt.Errorf("marshal openai probe payload: %w", err)
+	}
+
+	reqCtx, cancel := context.WithTimeout(ctx, 15*time.Second)
+	defer cancel()
+	req, err := http.NewRequestWithContext(reqCtx, http.MethodPost, chatgptCodexURL, bytes.NewReader(payloadBytes))
+	if err != nil {
+		return nil, fmt.Errorf("create openai probe request: %w", err)
+	}
+	req.Host = "chatgpt.com"
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("Authorization", "Bearer "+accessToken)
+	req.Header.Set("Accept", "text/event-stream")
+	req.Header.Set("OpenAI-Beta", "responses=experimental")
+	req.Header.Set("Originator", "codex_cli_rs")
+	req.Header.Set("Version", codexCLIVersion)
+	req.Header.Set("User-Agent", codexCLIUserAgent)
+	if s.identityCache != nil {
+		if fp, fpErr := s.identityCache.GetFingerprint(reqCtx, account.ID); fpErr == nil && fp != nil && strings.TrimSpace(fp.UserAgent) != "" {
+			req.Header.Set("User-Agent", strings.TrimSpace(fp.UserAgent))
+		}
+	}
+	if chatgptAccountID := account.GetChatGPTAccountID(); chatgptAccountID != "" {
+		req.Header.Set("chatgpt-account-id", chatgptAccountID)
+	}
+
+	proxyURL := ""
+	if account.ProxyID != nil && account.Proxy != nil {
+		proxyURL = account.Proxy.URL()
+	}
+	client, err := httppool.GetClient(httppool.Options{
+		ProxyURL:              proxyURL,
+		Timeout:               15 * time.Second,
+		ResponseHeaderTimeout: 10 * time.Second,
+	})
+	if err != nil {
+		return nil, fmt.Errorf("build openai probe client: %w", err)
+	}
+	resp, err := client.Do(req)
+	if err != nil {
+		return nil, fmt.Errorf("openai codex probe request failed: %w", err)
+	}
+	defer func() { _ = resp.Body.Close() }()
+
+	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
+		return nil, fmt.Errorf("openai codex probe returned status %d", resp.StatusCode)
+	}
+	if snapshot := ParseCodexRateLimitHeaders(resp.Header); snapshot != nil {
+		updates := buildCodexUsageExtraUpdates(snapshot, time.Now())
+		if len(updates) > 0 {
+			go func(accountID int64, updates map[string]any) {
+				updateCtx, updateCancel := context.WithTimeout(context.Background(), 5*time.Second)
+				defer updateCancel()
+				_ = s.accountRepo.UpdateExtra(updateCtx, accountID, updates)
+			}(account.ID, updates)
+			return updates, nil
+		}
+	}
+	return nil, nil
+}
+
+func mergeAccountExtra(account *Account, updates map[string]any) {
+	if account == nil || len(updates) == 0 {
+		return
+	}
+	if account.Extra == nil {
+		account.Extra = make(map[string]any, len(updates))
+	}
+	for k, v := range updates {
+		account.Extra[k] = v
+	}
+}
+
 func (s *AccountUsageService) getGeminiUsage(ctx context.Context, account *Account) (*UsageInfo, error) {
 	now := time.Now()
 	usage := &UsageInfo{
@@ -519,6 +689,72 @@ func windowStatsFromAccountStats(stats *usagestats.AccountStats) *WindowStats {
 	}
 }
 
+func hasMeaningfulWindowStats(stats *WindowStats) bool {
+	if stats == nil {
+		return false
+	}
+	return stats.Requests > 0 || stats.Tokens > 0 || stats.Cost > 0 || stats.StandardCost > 0 || stats.UserCost > 0
+}
+
+func buildCodexUsageProgressFromExtra(extra map[string]any, window string, now time.Time) *UsageProgress {
+	if len(extra) == 0 {
+		return nil
+	}
+
+	var (
+		usedPercentKey string
+		resetAfterKey  string
+		resetAtKey     string
+	)
+
+	switch window {
+	case "5h":
+		usedPercentKey = "codex_5h_used_percent"
+		resetAfterKey = "codex_5h_reset_after_seconds"
+		resetAtKey = "codex_5h_reset_at"
+	case "7d":
+		usedPercentKey = "codex_7d_used_percent"
+		resetAfterKey = "codex_7d_reset_after_seconds"
+		resetAtKey = "codex_7d_reset_at"
+	default:
+		return nil
+	}
+
+	usedRaw, ok := extra[usedPercentKey]
+	if !ok {
+		return nil
+	}
+
+	progress := &UsageProgress{Utilization: parseExtraFloat64(usedRaw)}
+	if resetAtRaw, ok := extra[resetAtKey]; ok {
+		if resetAt, err := parseTime(fmt.Sprint(resetAtRaw)); err == nil {
+			progress.ResetsAt = &resetAt
+			progress.RemainingSeconds = int(time.Until(resetAt).Seconds())
+			if progress.RemainingSeconds < 0 {
+				progress.RemainingSeconds = 0
+			}
+		}
+	}
+	if progress.ResetsAt == nil {
+		if resetAfterSeconds := parseExtraInt(extra[resetAfterKey]); resetAfterSeconds > 0 {
+			base := now
+			if updatedAtRaw, ok := extra["codex_usage_updated_at"]; ok {
+				if updatedAt, err := parseTime(fmt.Sprint(updatedAtRaw)); err == nil {
+					base = updatedAt
+				}
+			}
+			resetAt := base.Add(time.Duration(resetAfterSeconds) * time.Second)
+			progress.ResetsAt = &resetAt
+			progress.RemainingSeconds = int(time.Until(resetAt).Seconds())
+			if progress.RemainingSeconds < 0 {
+				progress.RemainingSeconds = 0
+			}
+		}
+	}
+
+	return progress
+}
+
 func (s *AccountUsageService) GetAccountUsageStats(ctx context.Context, accountID int64, startTime, endTime time.Time) (*usagestats.AccountUsageStatsResponse, error) {
 	stats, err := s.usageLogRepo.GetAccountUsageStats(ctx, accountID, startTime, endTime)
 	if err != nil {

backend/internal/service/openai_gateway_service.go

@@ -210,6 +210,7 @@ type OpenAIForwardResult struct {
 	ReasoningEffort *string
 	Stream          bool
 	OpenAIWSMode    bool
+	ResponseHeaders http.Header
 	Duration        time.Duration
 	FirstTokenMs    *int
 }
@@ -3747,6 +3748,15 @@ func (s *OpenAIGatewayService) updateCodexUsageSnapshot(ctx context.Context, acc
 	}()
 }
 
+func (s *OpenAIGatewayService) UpdateCodexUsageSnapshotFromHeaders(ctx context.Context, accountID int64, headers http.Header) {
+	if accountID <= 0 || headers == nil {
+		return
+	}
+	if snapshot := ParseCodexRateLimitHeaders(headers); snapshot != nil {
+		s.updateCodexUsageSnapshot(ctx, accountID, snapshot)
+	}
+}
+
 func getOpenAIReasoningEffortFromReqBody(reqBody map[string]any) (value string, present bool) {
 	if reqBody == nil {
 		return "", false

backend/internal/service/openai_gateway_service_test.go

@@ -28,6 +28,22 @@ type stubOpenAIAccountRepo struct {
 	accounts []Account
 }
 
+type snapshotUpdateAccountRepo struct {
+	stubOpenAIAccountRepo
+	updateExtraCalls chan map[string]any
+}
+
+func (r *snapshotUpdateAccountRepo) UpdateExtra(ctx context.Context, id int64, updates map[string]any) error {
+	if r.updateExtraCalls != nil {
+		copied := make(map[string]any, len(updates))
+		for k, v := range updates {
+			copied[k] = v
+		}
+		r.updateExtraCalls <- copied
+	}
+	return nil
+}
+
 func (r stubOpenAIAccountRepo) GetByID(ctx context.Context, id int64) (*Account, error) {
 	for i := range r.accounts {
 		if r.accounts[i].ID == id {
@@ -1248,8 +1264,115 @@ func TestOpenAIValidateUpstreamBaseURLEnabledEnforcesAllowlist(t *testing.T) {
 	}
 }
 
-// ==================== P1-08 修复：model 替换性能优化测试 ====================
+func TestOpenAIUpdateCodexUsageSnapshotFromHeaders(t *testing.T) {
+	repo := &snapshotUpdateAccountRepo{updateExtraCalls: make(chan map[string]any, 1)}
+	svc := &OpenAIGatewayService{accountRepo: repo}
+	headers := http.Header{}
+	headers.Set("x-codex-primary-used-percent", "12")
+	headers.Set("x-codex-secondary-used-percent", "34")
+	headers.Set("x-codex-primary-window-minutes", "300")
+	headers.Set("x-codex-secondary-window-minutes", "10080")
+	headers.Set("x-codex-primary-reset-after-seconds", "600")
+	headers.Set("x-codex-secondary-reset-after-seconds", "86400")
+
+	svc.UpdateCodexUsageSnapshotFromHeaders(context.Background(), 123, headers)
+
+	select {
+	case updates := <-repo.updateExtraCalls:
+		require.Equal(t, 12.0, updates["codex_5h_used_percent"])
+		require.Equal(t, 34.0, updates["codex_7d_used_percent"])
+		require.Equal(t, 600, updates["codex_5h_reset_after_seconds"])
+		require.Equal(t, 86400, updates["codex_7d_reset_after_seconds"])
+	case <-time.After(2 * time.Second):
+		t.Fatal("expected UpdateExtra to be called")
+	}
+}
+
+func TestOpenAIResponsesRequestPathSuffix(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+	rec := httptest.NewRecorder()
+	c, _ := gin.CreateTestContext(rec)
+
+	tests := []struct {
+		name string
+		path string
+		want string
+	}{
+		{name: "exact v1 responses", path: "/v1/responses", want: ""},
+		{name: "compact v1 responses", path: "/v1/responses/compact", want: "/compact"},
+		{name: "compact alias responses", path: "/responses/compact/", want: "/compact"},
+		{name: "nested suffix", path: "/openai/v1/responses/compact/detail", want: "/compact/detail"},
+		{name: "unrelated path", path: "/v1/chat/completions", want: ""},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			c.Request = httptest.NewRequest(http.MethodPost, tt.path, nil)
+			require.Equal(t, tt.want, openAIResponsesRequestPathSuffix(c))
+		})
+	}
+}
+
+func TestOpenAIBuildUpstreamRequestOpenAIPassthroughPreservesCompactPath(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+	rec := httptest.NewRecorder()
+	c, _ := gin.CreateTestContext(rec)
+	c.Request = httptest.NewRequest(http.MethodPost, "/v1/responses/compact", bytes.NewReader([]byte(`{"model":"gpt-5"}`)))
+
+	svc := &OpenAIGatewayService{}
+	account := &Account{Type: AccountTypeOAuth}
+
+	req, err := svc.buildUpstreamRequestOpenAIPassthrough(c.Request.Context(), c, account, []byte(`{"model":"gpt-5"}`), "token")
+	require.NoError(t, err)
+	require.Equal(t, chatgptCodexURL+"/compact", req.URL.String())
+	require.Equal(t, "application/json", req.Header.Get("Accept"))
+	require.Equal(t, codexCLIVersion, req.Header.Get("Version"))
+	require.NotEmpty(t, req.Header.Get("Session_Id"))
+}
+
+func TestOpenAIBuildUpstreamRequestCompactForcesJSONAcceptForOAuth(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+	rec := httptest.NewRecorder()
+	c, _ := gin.CreateTestContext(rec)
+	c.Request = httptest.NewRequest(http.MethodPost, "/v1/responses/compact", bytes.NewReader([]byte(`{"model":"gpt-5"}`)))
+
+	svc := &OpenAIGatewayService{}
+	account := &Account{
+		Type:        AccountTypeOAuth,
+		Credentials: map[string]any{"chatgpt_account_id": "chatgpt-acc"},
+	}
+
+	req, err := svc.buildUpstreamRequest(c.Request.Context(), c, account, []byte(`{"model":"gpt-5"}`), "token", false, "", true)
+	require.NoError(t, err)
+	require.Equal(t, chatgptCodexURL+"/compact", req.URL.String())
+	require.Equal(t, "application/json", req.Header.Get("Accept"))
+	require.Equal(t, codexCLIVersion, req.Header.Get("Version"))
+	require.NotEmpty(t, req.Header.Get("Session_Id"))
+}
+
+func TestOpenAIBuildUpstreamRequestPreservesCompactPathForAPIKeyBaseURL(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+	rec := httptest.NewRecorder()
+	c, _ := gin.CreateTestContext(rec)
+	c.Request = httptest.NewRequest(http.MethodPost, "/responses/compact", bytes.NewReader([]byte(`{"model":"gpt-5"}`)))
+
+	svc := &OpenAIGatewayService{cfg: &config.Config{
+		Security: config.SecurityConfig{
+			URLAllowlist: config.URLAllowlistConfig{Enabled: false},
+		},
+	}}
+	account := &Account{
+		Type:        AccountTypeAPIKey,
+		Platform:    PlatformOpenAI,
+		Credentials: map[string]any{"base_url": "https://example.com/v1"},
+	}
+
+	req, err := svc.buildUpstreamRequest(c.Request.Context(), c, account, []byte(`{"model":"gpt-5"}`), "token", false, "", false)
+	require.NoError(t, err)
+	require.Equal(t, "https://example.com/v1/responses/compact", req.URL.String())
+}
 
+// ==================== P1-08 修复：model 替换性能优化测试 =============
 func TestReplaceModelInSSELine(t *testing.T) {
 	svc := &OpenAIGatewayService{}
 

backend/internal/service/openai_ws_forwarder.go

@@ -2309,6 +2309,7 @@ func (s *OpenAIGatewayService) forwardOpenAIWSV2(
 		ReasoningEffort: extractOpenAIReasoningEffort(reqBody, originalModel),
 		Stream:          reqStream,
 		OpenAIWSMode:    true,
+		ResponseHeaders: lease.HandshakeHeaders(),
 		Duration:        time.Since(startTime),
 		FirstTokenMs:    firstTokenMs,
 	}, nil
@@ -2919,6 +2920,7 @@ func (s *OpenAIGatewayService) ProxyResponsesWebSocketFromClient(
 					ReasoningEffort: extractOpenAIReasoningEffortFromBody(payload, originalModel),
 					Stream:          reqStream,
 					OpenAIWSMode:    true,
+					ResponseHeaders: lease.HandshakeHeaders(),
 					Duration:        time.Since(turnStart),
 					FirstTokenMs:    firstTokenMs,
 				}, nil

backend/internal/service/openai_ws_pool.go

@@ -126,6 +126,13 @@ func (l *openAIWSConnLease) HandshakeHeader(name string) string {
 	return l.conn.handshakeHeader(name)
 }
 
+func (l *openAIWSConnLease) HandshakeHeaders() http.Header {
+	if l == nil || l.conn == nil {
+		return nil
+	}
+	return cloneHeader(l.conn.handshakeHeaders)
+}
+
 func (l *openAIWSConnLease) IsPrewarmed() bool {
 	if l == nil || l.conn == nil {
 		return false

backend/internal/service/openai_ws_v2_passthrough_adapter.go

@@ -180,6 +180,7 @@ func (s *OpenAIGatewayService) proxyResponsesWebSocketV2Passthrough(
 					Model:           turn.RequestModel,
 					Stream:          true,
 					OpenAIWSMode:    true,
+					ResponseHeaders: cloneHeader(handshakeHeaders),
 					Duration:        turn.Duration,
 					FirstTokenMs:    turn.FirstTokenMs,
 				}
@@ -226,6 +227,7 @@ func (s *OpenAIGatewayService) proxyResponsesWebSocketV2Passthrough(
 		Model:           relayResult.RequestModel,
 		Stream:          true,
 		OpenAIWSMode:    true,
+		ResponseHeaders: cloneHeader(handshakeHeaders),
 		Duration:        relayResult.Duration,
 		FirstTokenMs:    relayResult.FirstTokenMs,
 	}

frontend/src/components/account/AccountUsageCell.vue

@@ -90,6 +90,36 @@
           color="emerald"
         />
       </div>
+      <div v-else-if="loading" class="space-y-1.5">
+        <div class="flex items-center gap-1">
+          <div class="h-3 w-[32px] animate-pulse rounded bg-gray-200 dark:bg-gray-700"></div>
+          <div class="h-1.5 w-8 animate-pulse rounded-full bg-gray-200 dark:bg-gray-700"></div>
+          <div class="h-3 w-[32px] animate-pulse rounded bg-gray-200 dark:bg-gray-700"></div>
+        </div>
+        <div class="flex items-center gap-1">
+          <div class="h-3 w-[32px] animate-pulse rounded bg-gray-200 dark:bg-gray-700"></div>
+          <div class="h-1.5 w-8 animate-pulse rounded-full bg-gray-200 dark:bg-gray-700"></div>
+          <div class="h-3 w-[32px] animate-pulse rounded bg-gray-200 dark:bg-gray-700"></div>
+        </div>
+      </div>
+      <div v-else-if="hasOpenAIUsageFallback" class="space-y-1">
+        <UsageProgressBar
+          v-if="usageInfo?.five_hour"
+          label="5h"
+          :utilization="usageInfo.five_hour.utilization"
+          :resets-at="usageInfo.five_hour.resets_at"
+          :window-stats="usageInfo.five_hour.window_stats"
+          color="indigo"
+        />
+        <UsageProgressBar
+          v-if="usageInfo?.seven_day"
+          label="7d"
+          :utilization="usageInfo.seven_day.utilization"
+          :resets-at="usageInfo.seven_day.resets_at"
+          :window-stats="usageInfo.seven_day.window_stats"
+          color="emerald"
+        />
+      </div>
       <div v-else class="text-xs text-gray-400">-</div>
     </template>
 
@@ -313,6 +343,9 @@ const shouldFetchUsage = computed(() => {
   if (props.account.platform === 'antigravity') {
     return props.account.type === 'oauth'
   }
+  if (props.account.platform === 'openai') {
+    return props.account.type === 'oauth'
+  }
   return false
 })
 
@@ -335,6 +368,11 @@ const hasCodexUsage = computed(() => {
   return codex5hWindow.value.usedPercent !== null || codex7dWindow.value.usedPercent !== null
 })
 
+const hasOpenAIUsageFallback = computed(() => {
+  if (props.account.platform !== 'openai' || props.account.type !== 'oauth') return false
+  return !!usageInfo.value?.five_hour || !!usageInfo.value?.seven_day
+})
+
 const codex5hUsedPercent = computed(() => codex5hWindow.value.usedPercent)
 const codex5hResetAt = computed(() => codex5hWindow.value.resetAt)
 const codex7dUsedPercent = computed(() => codex7dWindow.value.usedPercent)

frontend/src/components/account/__tests__/AccountUsageCell.spec.ts

@@ -67,4 +67,59 @@ describe('AccountUsageCell', () => {
 
     expect(wrapper.text()).toContain('admin.accounts.usageWindow.gemini3Image|70|2026-03-01T09:00:00Z')
   })
+
+  it('OpenAI OAuth 在无 codex 快照时会回退显示 usage 接口窗口', async () => {
+	getUsage.mockResolvedValue({
+	  five_hour: {
+	    utilization: 0,
+	    resets_at: null,
+	    remaining_seconds: 0,
+	    window_stats: {
+	      requests: 2,
+	      tokens: 27700,
+	      cost: 0.06,
+	      standard_cost: 0.06,
+	      user_cost: 0.06
+	    }
+	  },
+	  seven_day: {
+	    utilization: 0,
+	    resets_at: null,
+	    remaining_seconds: 0,
+	    window_stats: {
+	      requests: 2,
+	      tokens: 27700,
+	      cost: 0.06,
+	      standard_cost: 0.06,
+	      user_cost: 0.06
+	    }
+	  }
+	})
+
+	const wrapper = mount(AccountUsageCell, {
+	  props: {
+	    account: {
+	      id: 2002,
+	      platform: 'openai',
+	      type: 'oauth',
+	      extra: {}
+	    } as any
+	  },
+	  global: {
+	    stubs: {
+	      UsageProgressBar: {
+	        props: ['label', 'utilization', 'resetsAt', 'windowStats', 'color'],
+	        template: '<div class="usage-bar">{{ label }}|{{ utilization }}|{{ windowStats?.tokens }}</div>'
+	      },
+	      AccountQuotaInfo: true
+	    }
+	  }
+	})
+
+	await flushPromises()
+
+	expect(getUsage).toHaveBeenCalledWith(2002)
+	expect(wrapper.text()).toContain('5h|0|27700')
+	expect(wrapper.text()).toContain('7d|0|27700')
+  })
 })