test(acceptance): 验证厂商三类额度与优先路由

为 provider-burst 固定三平台并发、RPM、TPM 和优先级组合，使用稳定 token 用量的本地视频负载验证同级按容量分流及低优先级溢出。\n\n报告升级为 v2，强制校验三类额度峰值精确命中上限、不越界、队列回收、三 Worker 分发以及重复提交和回调安全。\n\n验证：\n- env -u AI_GATEWAY_TEST_DATABASE_URL go test ./... -count=1\n- go vet ./...\n- bash -n scripts/acceptance/provider-burst.sh scripts/acceptance/run-local-acceptance.sh\n- shellcheck -x scripts/acceptance/provider-burst.sh scripts/acceptance/run-local-acceptance.sh

apps/api/internal/acceptanceemulator/server.go

@@ -78,11 +78,12 @@ type Report struct {
 }
 
 type videoTask struct {
-	ID        string
-	Model     string
-	CreatedAt time.Time
-	ReadyAt   time.Time
-	ImageRefs []imageReference
+	ID          string
+	Model       string
+	CreatedAt   time.Time
+	ReadyAt     time.Time
+	UsageTokens int
+	ImageRefs   []imageReference
 }
 
 type imageReference struct {
@@ -243,7 +244,7 @@ func (s *Server) submitVideo(w http.ResponseWriter, r *http.Request) {
 	id := "acceptance-video-" + strconv.FormatUint(s.nextID.Add(1), 10)
 	task := videoTask{
 		ID: id, Model: strings.TrimSpace(stringValue(body["model"])),
-		CreatedAt: s.now(), ReadyAt: s.now().Add(delay), ImageRefs: refs,
+		CreatedAt: s.now(), ReadyAt: s.now().Add(delay), UsageTokens: videoUsageTokens(body), ImageRefs: refs,
 	}
 	s.mu.Lock()
 	if existingID := s.videoByIdempotency[idempotencyKey]; existingID != "" {
@@ -298,7 +299,7 @@ func (s *Server) getVideo(w http.ResponseWriter, r *http.Request) {
 	writeJSON(w, http.StatusOK, map[string]any{
 		"id": id, "model": task.Model, "status": status, "content": content,
 		"created_at": task.CreatedAt.Unix(),
-		"usage":      map[string]any{"completion_tokens": 1, "total_tokens": 1},
+		"usage":      map[string]any{"completion_tokens": task.UsageTokens, "total_tokens": task.UsageTokens},
 	})
 }
 
@@ -674,12 +675,22 @@ func videoDelay(body map[string]any, longRun bool) time.Duration {
 	if longRun {
 		return 2*time.Minute + time.Duration(seed%61)*time.Second
 	}
+	if videoPromptContains(body, "acceptance-provider-quota") {
+		return 5*time.Second + time.Duration(seed%6)*time.Second
+	}
 	if videoPromptContains(body, "acceptance-capacity-ladder") {
 		return 30*time.Second + time.Duration(seed%16)*time.Second
 	}
 	return 5*time.Second + time.Duration(seed%11)*time.Second
 }
 
+func videoUsageTokens(body map[string]any) int {
+	if videoPromptContains(body, "acceptance-provider-quota") {
+		return 7
+	}
+	return 1
+}
+
 func videoPromptContains(body map[string]any, marker string) bool {
 	content, _ := body["content"].([]any)
 	for _, raw := range content {