fix(acceptance): 修复线上双站压测失真

将线上压力生成器拆分为宁波、香港宿主机上的 K3s 外进程，按全局序号分片并保守合并站点报告，避免操作者本机上行带宽成为容量瓶颈。\n\n为每次负载执行生成独立幂等键和 Run 级图片变体，阻止三轮验收重放旧任务或复用历史媒体缓存，并新增直接 OSS 物化一致性门禁。\n\n验证：Go 全量测试、go vet、迁移安全检查、bash -n、ShellCheck、manual-release-test 和双宿主机 linux/amd64 启动冒烟通过。

apps/api/cmd/acceptance-load/main.go

@@ -56,6 +56,9 @@ type options struct {
 	mixedDuration  time.Duration
 	imageRate      float64
 	videoRate      float64
+	shardIndex     int
+	shardCount     int
+	executionID    string
 }
 
 type report struct {
@@ -194,12 +197,18 @@ func parseOptions() (options, error) {
 	var mixedDuration time.Duration
 	var imageRate float64
 	var videoRate float64
+	var shardIndex int
+	var shardCount int
+	var executionID string
 	flag.StringVar(&profile, "profile", env("AI_GATEWAY_ACCEPTANCE_PROFILE", "simulated-all"), "simulated-all, Gemini profile, video profile, or real-canary")
 	flag.StringVar(&reportPath, "report", env("AI_GATEWAY_ACCEPTANCE_REPORT", ""), "secret-safe JSON report path")
 	flag.DurationVar(&timeout, "timeout", 45*time.Minute, "overall timeout")
 	flag.DurationVar(&mixedDuration, "duration", envDuration("AI_GATEWAY_ACCEPTANCE_MIXED_DURATION", 10*time.Minute), "mixed workload duration")
 	flag.Float64Var(&imageRate, "image-rate", envFloat("AI_GATEWAY_ACCEPTANCE_IMAGE_RATE", 0), "mixed image requests per second")
 	flag.Float64Var(&videoRate, "video-rate", envFloat("AI_GATEWAY_ACCEPTANCE_VIDEO_RATE", 0), "mixed video requests per second")
+	flag.IntVar(&shardIndex, "shard-index", 0, "zero-based distributed load shard index")
+	flag.IntVar(&shardCount, "shard-count", 1, "distributed load shard count")
+	flag.StringVar(&executionID, "execution-id", "", "unique workload execution identifier")
 	flag.Parse()
 	opts := options{
 		gateways:       splitCSV(os.Getenv("AI_GATEWAY_ACCEPTANCE_GATEWAYS")),
@@ -218,9 +227,21 @@ func parseOptions() (options, error) {
 		mixedDuration:  mixedDuration,
 		imageRate:      imageRate,
 		videoRate:      videoRate,
+		shardIndex:     shardIndex,
+		shardCount:     shardCount,
+		executionID:    strings.ToLower(strings.TrimSpace(executionID)),
 	}
-	if len(opts.gateways) != 2 {
-		return options{}, errors.New("AI_GATEWAY_ACCEPTANCE_GATEWAYS must contain exactly two API base URLs")
+	if opts.executionID == "" {
+		opts.executionID = opts.profile
+	}
+	if matched, _ := regexp.MatchString(`^[a-z0-9][a-z0-9-]{0,127}$`, opts.executionID); !matched {
+		return options{}, errors.New("execution-id must contain only lowercase letters, numbers, and hyphens")
+	}
+	if opts.shardCount < 1 || opts.shardCount > 32 || opts.shardIndex < 0 || opts.shardIndex >= opts.shardCount {
+		return options{}, fmt.Errorf("invalid load shard %d/%d", opts.shardIndex, opts.shardCount)
+	}
+	if len(opts.gateways) < 1 || len(opts.gateways) > 2 || (opts.shardCount == 1 && len(opts.gateways) != 2) {
+		return options{}, errors.New("AI_GATEWAY_ACCEPTANCE_GATEWAYS must contain two API base URLs, or one URL for a distributed shard")
 	}
 	for index := range opts.gateways {
 		opts.gateways[index] = strings.TrimRight(opts.gateways[index], "/")
@@ -262,6 +283,17 @@ func parseOptions() (options, error) {
 	return opts, nil
 }
 
+func (o options) shardRequestCount(total int) int {
+	if total <= o.shardIndex {
+		return 0
+	}
+	return (total-1-o.shardIndex)/o.shardCount + 1
+}
+
+func (o options) logicalRequestIndex(localIndex int) int {
+	return o.shardIndex + localIndex*o.shardCount
+}
+
 func run(ctx context.Context, opts options) ([]phaseResult, error) {
 	var tlsConfig *tls.Config
 	if opts.gatewayTLSName != "" || opts.gatewayCAFile != "" {
@@ -289,23 +321,26 @@ func run(ctx context.Context, opts options) ([]phaseResult, error) {
 	runPhase := func(name string) error {
 		var result phaseResult
 		if profile, ok := acceptanceworkload.GeminiProfileByName(name); ok {
-			result = runGemini(ctx, client, opts, name, profile.Requests, profile.InputBytes, profile.OutputBytes, false)
+			result = runGemini(
+				ctx, client, opts, name, opts.shardRequestCount(profile.Requests),
+				profile.InputBytes, profile.OutputBytes, false, opts.shardIndex, opts.shardCount,
+			)
 		} else {
 			switch name {
 			case "smoke-gemini":
-				result = runGemini(ctx, client, opts, name, 4, 256<<10, 256<<10, false)
+				result = runGemini(ctx, client, opts, name, opts.shardRequestCount(4), 256<<10, 256<<10, false, opts.shardIndex, opts.shardCount)
 			case "smoke-video":
-				result = runVideo(ctx, client, opts, name, 10, false, opts.emulatorFixtureURLs(), false, 0)
+				result = runVideo(ctx, client, opts, name, opts.shardRequestCount(10), false, opts.emulatorFixtureURLs(), false, opts.shardIndex, opts.shardCount)
 			case "video-throughput":
-				result = runVideo(ctx, client, opts, name, 1200, false, opts.emulatorFixtureURLs(), false, 0)
+				result = runVideo(ctx, client, opts, name, opts.shardRequestCount(1200), false, opts.emulatorFixtureURLs(), false, opts.shardIndex, opts.shardCount)
 			case "video-recovery":
-				result = runVideo(ctx, client, opts, name, 96, true, opts.emulatorFixtureURLs(), false, 0)
+				result = runVideo(ctx, client, opts, name, opts.shardRequestCount(96), true, opts.emulatorFixtureURLs(), false, opts.shardIndex, opts.shardCount)
 			case "mixed-soak", "mixed-overload":
 				result = runMixed(ctx, client, opts, name == "mixed-overload")
 			case "real-gemini-canary":
-				result = runGemini(ctx, client, opts, name, 1, 256<<10, 0, true)
+				result = runGemini(ctx, client, opts, name, 1, 256<<10, 0, true, 0, 1)
 			case "real-video-canary":
-				result = runVideo(ctx, client, opts, name, 1, false, opts.realImageURLs, true, 0)
+				result = runVideo(ctx, client, opts, name, 1, false, opts.realImageURLs, true, 0, 1)
 			default:
 				return fmt.Errorf("unknown phase %q", name)
 			}
@@ -338,7 +373,12 @@ func runGemini(
 	inputBytes int,
 	expectedOutputBytes int,
 	realUpstream bool,
+	requestOffset int,
+	requestStride int,
 ) phaseResult {
+	if requestStride < 1 {
+		requestStride = 1
+	}
 	startedAt := time.Now()
 	expectedHash := ""
 	if expectedOutputBytes > 0 {
@@ -358,6 +398,7 @@ func runGemini(
 		wg.Add(1)
 		go func() {
 			defer wg.Done()
+			logicalIndex := requestOffset + index*requestStride
 			select {
 			case slots <- struct{}{}:
 			case <-ctx.Done():
@@ -365,8 +406,8 @@ func runGemini(
 			}
 			defer func() { <-slots }()
 			requestStarted := time.Now()
-			endpoint := opts.gateways[index%len(opts.gateways)] + "/v1beta/models/" + url.PathEscape(opts.geminiModel) + ":generateContent"
-			requestBody := streamGeminiRequestBody(paddedPNGVariant(inputBytes, index+1))
+			endpoint := opts.gateways[logicalIndex%len(opts.gateways)] + "/v1beta/models/" + url.PathEscape(opts.geminiModel) + ":generateContent"
+			requestBody := streamGeminiRequestBody(paddedPNGVariant(inputBytes, geminiInputVariant(opts.runID+"/"+opts.executionID, logicalIndex)))
 			req, err := http.NewRequestWithContext(
 				ctx,
 				http.MethodPost,
@@ -377,7 +418,7 @@ func runGemini(
 				_ = requestBody.Close()
 			}
 			if err == nil {
-				opts.setHeaders(req, index, realUpstream)
+				opts.setHeaders(req, logicalIndex, realUpstream)
 				req.Header.Set("Content-Type", "application/json")
 				var response *http.Response
 				response, err = client.Do(req)
@@ -472,7 +513,11 @@ func runVideo(
 	imageURLs []string,
 	realUpstream bool,
 	requestOffset int,
+	requestStride int,
 ) phaseResult {
+	if requestStride < 1 {
+		requestStride = 1
+	}
 	startedAt := time.Now()
 	combinationCount := 128
 	if realUpstream {
@@ -494,7 +539,7 @@ func runVideo(
 		wg.Add(1)
 		go func() {
 			defer wg.Done()
-			logicalIndex := index + requestOffset
+			logicalIndex := requestOffset + index*requestStride
 			requestStarted := time.Now()
 			startedTasks[index] = requestStarted
 			imageCount := acceptanceworkload.VideoImageCount(logicalIndex)
@@ -590,7 +635,7 @@ func runVideo(
 			continue
 		}
 		index, taskID := index, taskID
-		logicalIndex := index + requestOffset
+		logicalIndex := requestOffset + index*requestStride
 		wg.Add(1)
 		go func() {
 			defer wg.Done()
@@ -685,7 +730,7 @@ func runMixed(
 				generating = false
 				continue
 			}
-			requestIndex := requests
+			requestIndex := opts.logicalRequestIndex(requests)
 			requests++
 			imageAccumulator += opts.imageRate
 			isImage := imageAccumulator >= totalRate
@@ -698,7 +743,7 @@ func runMixed(
 				defer func() { <-slots }()
 				var result phaseResult
 				if isImage {
-					result = runGemini(runCtx, client, opts, "mixed-image", 1, 256<<10, 256<<10, false)
+					result = runGemini(runCtx, client, opts, "mixed-image", 1, 256<<10, 256<<10, false, requestIndex, 1)
 				} else {
 					result = runVideo(
 						runCtx,
@@ -710,6 +755,7 @@ func runMixed(
 						opts.emulatorFixtureURLs(),
 						false,
 						requestIndex,
+						1,
 					)
 				}
 				latency := time.Since(startedAt)
@@ -940,6 +986,9 @@ func (o options) setHeaders(request *http.Request, requestIndex int, realUpstrea
 	request.Header.Set("Authorization", "Bearer "+o.apiKeys[requestIndex%len(o.apiKeys)])
 	request.Header.Set(runHeader, o.runID)
 	request.Header.Set(tokenHeader, o.runToken)
+	if request.Method == http.MethodPost {
+		request.Header.Set("Idempotency-Key", fmt.Sprintf("acceptance-%s-%s-%d", o.runID, o.executionID, requestIndex))
+	}
 	if realUpstream {
 		request.Header.Set(upstreamHeader, "real")
 	}
@@ -1115,6 +1164,11 @@ func paddedPNG(size int) []byte {
 	return paddedPNGVariant(size, 0)
 }
 
+func geminiInputVariant(runID string, logicalIndex int) int {
+	digest := sha256.Sum256([]byte(fmt.Sprintf("%s:%d", strings.TrimSpace(runID), logicalIndex)))
+	return int(binary.BigEndian.Uint64(digest[:8]) & uint64(^uint(0)>>1))
+}
+
 func paddedPNGVariant(size int, variant int) []byte {
 	base, _ := base64.StdEncoding.DecodeString("iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNk+A8AAQUBAScY42YAAAAASUVORK5CYII=")
 	if size <= len(base) {

apps/api/cmd/acceptance-load/main_test.go

@@ -146,7 +146,7 @@ func TestGeminiLoadIsSplitAcrossTwoGatewayAPIs(t *testing.T) {
 		gateways: []string{first.URL, second.URL}, apiKeys: []string{"key-1", "key-2"}, runID: "run-1",
 		runToken: "token-1", geminiModel: "gemini-image-test",
 	}
-	result := runGemini(t.Context(), http.DefaultClient, opts, "dual-api", 8, 256<<10, 256<<10, false)
+	result := runGemini(t.Context(), http.DefaultClient, opts, "dual-api", 8, 256<<10, 256<<10, false, 0, 1)
 	if result.err != nil || result.report.Completed != 8 {
 		t.Fatalf("result=%+v err=%v", result.report, result.err)
 	}
@@ -158,6 +158,53 @@ func TestGeminiLoadIsSplitAcrossTwoGatewayAPIs(t *testing.T) {
 	}
 }
 
+func TestDistributedShardIndexesCoverWorkloadWithoutOverlap(t *testing.T) {
+	first := options{shardIndex: 0, shardCount: 2}
+	second := options{shardIndex: 1, shardCount: 2}
+	if first.shardRequestCount(1001) != 501 || second.shardRequestCount(1001) != 500 {
+		t.Fatalf("shard counts=%d/%d", first.shardRequestCount(1001), second.shardRequestCount(1001))
+	}
+	seen := map[int]bool{}
+	for local := 0; local < first.shardRequestCount(1001); local++ {
+		seen[first.logicalRequestIndex(local)] = true
+	}
+	for local := 0; local < second.shardRequestCount(1001); local++ {
+		index := second.logicalRequestIndex(local)
+		if seen[index] {
+			t.Fatalf("duplicate logical index %d", index)
+		}
+		seen[index] = true
+	}
+	if len(seen) != 1001 {
+		t.Fatalf("covered indexes=%d", len(seen))
+	}
+}
+
+func TestGeminiInputVariantIsRunScoped(t *testing.T) {
+	if geminiInputVariant("run-a", 7) == geminiInputVariant("run-b", 7) {
+		t.Fatal("different Run IDs produced the same input variant")
+	}
+	if geminiInputVariant("run-a", 7) == geminiInputVariant("run-a", 8) {
+		t.Fatal("different logical indexes produced the same input variant")
+	}
+}
+
+func TestAcceptanceIdempotencyKeyIncludesExecutionAndLogicalIndex(t *testing.T) {
+	request := httptest.NewRequest(http.MethodPost, "https://gateway.example/v1", nil)
+	opts := options{
+		apiKeys: []string{"key-1"}, runID: "run-1", runToken: "token-1", executionID: "p24-2-gemini-baseline",
+	}
+	opts.setHeaders(request, 17, false)
+	if got := request.Header.Get("Idempotency-Key"); got != "acceptance-run-1-p24-2-gemini-baseline-17" {
+		t.Fatalf("idempotency key=%q", got)
+	}
+	poll := httptest.NewRequest(http.MethodGet, "https://gateway.example/result", nil)
+	opts.setHeaders(poll, 17, false)
+	if got := poll.Header.Get("Idempotency-Key"); got != "" {
+		t.Fatalf("GET request unexpectedly has idempotency key %q", got)
+	}
+}
+
 func TestValidateVideoAssetDownloadsFinalMedia(t *testing.T) {
 	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, request *http.Request) {
 		if request.Header.Get("Authorization") != "" {

docs/operations/production-acceptance.md

@@ -8,7 +8,8 @@
 
 验收脚本是显式生产写操作，会暂停新正式任务、调整 Worker 容量并在恢复场景删除一个
 Worker Pod。它不会自动发布新版本；只能针对已经发布、完整 SHA 和 digest 固定的 manifest
-执行。进入线上前必须先通过[本地三节点同构验收](local-isomorphic-acceptance.md)。
+执行。默认先通过[本地三节点同构验收](local-isomorphic-acceptance.md)；用户明确授权在线验收时，
+可以记录审计豁免并跳过本地阶段，但不能把跳过记录成通过。
 
 ## 隔离与流量门禁
 
@@ -61,10 +62,12 @@ WebP、合法 4K 图片和越过 Seedance 2.0 官方输入边界的 `6144x2160`
 收集器。它校验参考图数量、角色、格式、尺寸与内容哈希，并统计重复上游提交和重复回调。
 
 默认通过 `AI_GATEWAY_ACCEPTANCE_IDENTITY_SHARDS=32` 幂等准备 32 个仅属于验收用户组的
-身份、API Key 和独立钱包，并按请求序号轮询使用。这样可模拟真实多租户并发，避免把 1000
+身份、API Key 和独立钱包，并按全局请求序号轮询使用。每次负载执行都有独立 execution ID，
+它同时进入幂等键和输入图片哈希，因此三次重复验收既不会重放旧任务，也不会命中前一轮的
+输入资产缓存。这样可模拟真实多租户并发，避免把 1000
 个任务全部压在同一钱包行锁上；每个任务仍执行真实预留、结算和重复扣费检查。该值可在
 `1..128` 内通过环境变量调整，Run 只保存 Key/User ID 对，Key Secret 仅通过 stdin 传入
-集群内压测进程，不进入 Pod spec、数据库 Run 配置、报告或日志。
+双站压测进程，不进入 Pod spec、数据库 Run 配置、报告或日志。
 
 ## Worker 配置
 
@@ -96,7 +99,7 @@ AI_GATEWAY_WORKER_REPLICAS_HONGKONG
 重新编码，避免执行槽升档时把大图峰值内存同比放大。2 GiB Worker 的起始值为 `2`；它不占用
 视频提交后的上游等待槽，只有实测单 Pod RSS 和节点预算允许时才单独升档。
 
-API Pod 使用独立发布配置 `AI_GATEWAY_API_DATABASE_MAX_CONNS`，生产同构验收默认使用 `64`；
+API Pod 使用独立发布配置 `AI_GATEWAY_API_DATABASE_MAX_CONNS`，生产同构验收默认使用 `31`；
 也可通过 `AI_GATEWAY_ACCEPTANCE_API_DATABASE_MAX_CONNS` 覆盖本次验收值，无需修改 Go 代码。
 所有 API/Worker Pool 的 `AI_GATEWAY_DATABASE_MIN_IDLE_CONNS` 固定为 `4`，仅预热必要连接，
 `AI_GATEWAY_DATABASE_MAX_CONN_IDLE_SECONDS` 为 `30`，突发扩出的空闲连接会及时回落，
@@ -135,6 +138,12 @@ PNG 并通过验收 Key 上传到 Gateway。生产快照默认在已部署的 AP
 `AI_GATEWAY_ACCEPTANCE_GATEWAY_TLS_SERVER_NAME=ai.51easyai.com`。压测器会继续校验正式
 证书，并同时使用该域名作为 HTTP Host；这不是跳过 TLS 校验。
 
+线上高负载不再由操作者本机单进程跨公网发送。脚本构建同一源码的静态 linux/amd64
+压测器，校验 SHA-256 后以 `0600` 临时环境分别运行在宁波、香港宿主机的 K3s 之外；两个
+进程同时只访问本站 TLS 入口，并按奇偶全局序号分担请求。这样避免本机上行带宽成为容量
+瓶颈，同时仍覆盖正式 TLS/Nginx 入口。站点报告按请求数相加、耗时取较慢站点、p50/p95/p99
+取两站较差值进行保守合并。进程、私有环境和远端部分报告在 Run 退出时按精确路径清理。
+
 ```bash
 scripts/cluster/run-production-acceptance.sh \
   --execute dist/releases/<完整SHA>.json \

scripts/acceptance/run-local-acceptance.sh

@@ -161,7 +161,8 @@ run_load() {
   AI_GATEWAY_ACCEPTANCE_RUN_TOKEN="$acceptance_run_token" \
   AI_GATEWAY_ACCEPTANCE_GEMINI_MODEL="$acceptance_gemini_model" \
   AI_GATEWAY_ACCEPTANCE_VIDEO_MODEL="$acceptance_video_model" \
-    "$load_binary" -profile "$profile" -report "$report_path" "$@" \
+    "$load_binary" -profile "$profile" -report "$report_path" \
+      -execution-id "$(basename "$report_path" .json)" "$@" \
       >"$stdout_temporary" &
   load_pid=$!
   active_load_pid=$load_pid

scripts/cluster/run-production-acceptance.sh

@@ -74,7 +74,7 @@ if [[ $skip_local_acceptance != true ]]; then
 fi
 
 load_cluster_env
-require_commands curl git go jq node openssl sed
+require_commands curl git go jq node openssl sed shasum
 
 : "${AI_GATEWAY_ACCEPTANCE_ADMIN_TOKEN:=}"
 : "${AI_GATEWAY_ACCEPTANCE_API_KEY:=}"
@@ -225,6 +225,7 @@ acceptance_group_id=
 acceptance_participants_json='[]'
 AI_GATEWAY_ACCEPTANCE_API_KEYS=$AI_GATEWAY_ACCEPTANCE_API_KEY
 acceptance_load_binary=$temporary_root/easyai-ai-gateway-acceptance-load
+acceptance_load_linux_binary=$temporary_root/easyai-ai-gateway-acceptance-load-linux-amd64
 acceptance_snapshot_binary=$temporary_root/easyai-ai-gateway-acceptance-snapshot
 current_production_snapshot=$temporary_root/current-production-snapshot.json
 local_snapshot_config_hash=
@@ -235,6 +236,7 @@ if [[ $skip_local_acceptance != true ]]; then
 fi
 active_load_pid=
 active_pressure_pid=
+remote_load_drivers_installed=false
 capacity_profiles_payload=
 image_stable_throughput=
 image_admitted_throughput=
@@ -254,6 +256,9 @@ cleanup() {
     kill "$active_pressure_pid" >/dev/null 2>&1 || true
     wait "$active_pressure_pid" >/dev/null 2>&1 || true
   fi
+  if [[ $remote_load_drivers_installed == true ]]; then
+    cleanup_remote_load_drivers >/dev/null 2>&1 || true
+  fi
   if (( status != 0 )) && [[ -n $run_id && $failure_recorded != true ]]; then
     set +e
     apply_capacity_profile "$stable_profile" >/dev/null 2>&1
@@ -307,6 +312,8 @@ bootstrap_acceptance_admin_token
   cd "$cluster_root/apps/api"
   env -u AI_GATEWAY_TEST_DATABASE_URL go build \
     -trimpath -o "$acceptance_load_binary" ./cmd/acceptance-load
+  env -u AI_GATEWAY_TEST_DATABASE_URL CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build \
+    -trimpath -o "$acceptance_load_linux_binary" ./cmd/acceptance-load
   env -u AI_GATEWAY_TEST_DATABASE_URL go build \
     -trimpath -o "$acceptance_snapshot_binary" ./cmd/acceptance-snapshot
 )
@@ -1750,24 +1757,14 @@ run_mixed_load_profile() {
   local video_rate=$4
   local report_path=$5
   local timeout_value=$6
-  local load_stdout=$temporary_root/load-$profile-stdout.json
-  AI_GATEWAY_ACCEPTANCE_GATEWAYS="$AI_GATEWAY_ACCEPTANCE_GATEWAYS" \
-  AI_GATEWAY_ACCEPTANCE_GATEWAY_TLS_SERVER_NAME="$AI_GATEWAY_ACCEPTANCE_GATEWAY_TLS_SERVER_NAME" \
-  AI_GATEWAY_ACCEPTANCE_EMULATOR_URL='http://easyai-acceptance-emulator.easyai.svc.cluster.local:8090' \
-  AI_GATEWAY_ACCEPTANCE_API_KEYS="$AI_GATEWAY_ACCEPTANCE_API_KEYS" \
-  AI_GATEWAY_ACCEPTANCE_RUN_ID="$run_id" \
-  AI_GATEWAY_ACCEPTANCE_RUN_TOKEN="$run_token" \
-  AI_GATEWAY_ACCEPTANCE_GEMINI_MODEL="$AI_GATEWAY_ACCEPTANCE_GEMINI_MODEL" \
-  AI_GATEWAY_ACCEPTANCE_VIDEO_MODEL="$AI_GATEWAY_ACCEPTANCE_VIDEO_MODEL" \
-  AI_GATEWAY_ACCEPTANCE_REAL_IMAGE_URLS="$AI_GATEWAY_ACCEPTANCE_REAL_IMAGE_URLS" \
-    "$acceptance_load_binary" \
-      -profile "$profile" \
-      -duration "$duration" \
-      -image-rate "$image_rate" \
-      -video-rate "$video_rate" \
-      -timeout "$timeout_value" \
-      -report "$report_path" >"$load_stdout"
-  jq -e '.secretSafe == true and .passed == true' "$report_path" >/dev/null
+  local site_image_rate site_video_rate
+  site_image_rate=$(awk -v value="$image_rate" 'BEGIN {printf "%.9f", value/2}')
+  site_video_rate=$(awk -v value="$video_rate" 'BEGIN {printf "%.9f", value/2}')
+  run_distributed_load_profile "$profile" "$report_path" \
+    -duration "$duration" \
+    -image-rate "$site_image_rate" \
+    -video-rate "$site_video_rate" \
+    -timeout "$timeout_value"
 }
 
 run_mixed_soak_and_overload() {
@@ -1904,10 +1901,196 @@ activate_certified_autoscaling() {
   verify_runtime_gates
 }
 
+remote_load_binary_path() {
+  [[ $run_id =~ ^[0-9a-f-]{36}$ ]]
+  printf '/root/easyai-acceptance-load-%s' "$run_id"
+}
+
+remote_load_env_path() {
+  local site=$1
+  [[ $site == ningbo || $site == hongkong ]]
+  [[ $run_id =~ ^[0-9a-f-]{36}$ ]]
+  printf '/root/easyai-acceptance-load-%s-%s.env' "$run_id" "$site"
+}
+
+cleanup_remote_load_drivers() {
+  [[ $run_id =~ ^[0-9a-f-]{36}$ ]] || return 0
+  local binary_path ningbo_env hongkong_env
+  binary_path=$(remote_load_binary_path)
+  ningbo_env=$(remote_load_env_path ningbo)
+  hongkong_env=$(remote_load_env_path hongkong)
+  cluster_ssh "$CLUSTER_NINGBO_HOST" \
+    "pkill -TERM -f '^$binary_path( |$)' >/dev/null 2>&1 || true; [[ ! -e '$binary_path' ]] || unlink '$binary_path'; [[ ! -e '$ningbo_env' ]] || unlink '$ningbo_env'" || true
+  cluster_ssh "$CLUSTER_HONGKONG_HOST" \
+    "pkill -TERM -f '^$binary_path( |$)' >/dev/null 2>&1 || true; [[ ! -e '$binary_path' ]] || unlink '$binary_path'; [[ ! -e '$hongkong_env' ]] || unlink '$hongkong_env'" || true
+  remote_load_drivers_installed=false
+}
+
+write_remote_load_env() {
+  local output=$1
+  local gateway=$2
+  install -m 0600 /dev/null "$output"
+  {
+    printf 'AI_GATEWAY_ACCEPTANCE_GATEWAYS=%q\n' "$gateway"
+    printf 'AI_GATEWAY_ACCEPTANCE_GATEWAY_TLS_SERVER_NAME=%q\n' "$AI_GATEWAY_ACCEPTANCE_GATEWAY_TLS_SERVER_NAME"
+    printf 'AI_GATEWAY_ACCEPTANCE_EMULATOR_URL=%q\n' 'http://easyai-acceptance-emulator.easyai.svc.cluster.local:8090'
+    printf 'AI_GATEWAY_ACCEPTANCE_API_KEYS=%q\n' "$AI_GATEWAY_ACCEPTANCE_API_KEYS"
+    printf 'AI_GATEWAY_ACCEPTANCE_RUN_ID=%q\n' "$run_id"
+    printf 'AI_GATEWAY_ACCEPTANCE_RUN_TOKEN=%q\n' "$run_token"
+    printf 'AI_GATEWAY_ACCEPTANCE_GEMINI_MODEL=%q\n' "$AI_GATEWAY_ACCEPTANCE_GEMINI_MODEL"
+    printf 'AI_GATEWAY_ACCEPTANCE_VIDEO_MODEL=%q\n' "$AI_GATEWAY_ACCEPTANCE_VIDEO_MODEL"
+    printf 'AI_GATEWAY_ACCEPTANCE_REAL_IMAGE_URLS=%q\n' "$AI_GATEWAY_ACCEPTANCE_REAL_IMAGE_URLS"
+  } >>"$output"
+}
+
+install_remote_load_drivers() {
+  [[ $remote_load_drivers_installed == false ]] || return 0
+  local binary_path local_digest remote_digest site host gateway env_file remote_env
+  binary_path=$(remote_load_binary_path)
+  local_digest=$(shasum -a 256 "$acceptance_load_linux_binary" | awk '{print $1}')
+  local -a sites=(ningbo hongkong)
+  local -a hosts=("$CLUSTER_NINGBO_HOST" "$CLUSTER_HONGKONG_HOST")
+  local -a gateways=("https://${CLUSTER_NINGBO_HOST#root@}" "https://${CLUSTER_HONGKONG_HOST#root@}")
+  for site_index in 0 1; do
+    site=${sites[$site_index]}
+    host=${hosts[$site_index]}
+    gateway=${gateways[$site_index]}
+    env_file=$temporary_root/remote-load-$site.env
+    remote_env=$(remote_load_env_path "$site")
+    write_remote_load_env "$env_file" "$gateway"
+    cluster_scp "$acceptance_load_linux_binary" "$host:$binary_path" >/dev/null
+    cluster_scp "$env_file" "$host:$remote_env" >/dev/null
+    cluster_ssh "$host" "chmod 0755 '$binary_path'; chmod 0600 '$remote_env'; sha256sum '$binary_path'" >"$temporary_root/remote-load-$site.sha256"
+    remote_digest=$(awk '{print $1}' "$temporary_root/remote-load-$site.sha256")
+    [[ $remote_digest == "$local_digest" ]]
+  done
+  remote_load_drivers_installed=true
+  echo 'acceptance_load_drivers=PASS sites=2 placement=k3s_external_host_processes digest_verified=true'
+}
+
+run_remote_load_site() {
+  local site=$1
+  local host=$2
+  local profile=$3
+  local artifact=$4
+  local shard_index=$5
+  shift 5
+  [[ $site == ningbo || $site == hongkong ]]
+  [[ $profile =~ ^[a-z-]+$ && $artifact =~ ^[a-z0-9-]+\.json$ ]]
+  local binary_path remote_env remote_report local_report status=0
+  binary_path=$(remote_load_binary_path)
+  remote_env=$(remote_load_env_path "$site")
+  remote_report=/root/easyai-acceptance-load-"$run_id"-"$artifact"
+  local_report=$temporary_root/"$site"-"$artifact"
+  cluster_ssh "$host" bash -s -- \
+    "$binary_path" "$remote_env" "$profile" "$remote_report" "$shard_index" 2 "${artifact%.json}" "$@" \
+    >"$temporary_root/$site-$artifact.stdout" <<'REMOTE' || status=$?
+set -euo pipefail
+binary_path=$1
+env_file=$2
+profile=$3
+report=$4
+shard_index=$5
+shard_count=$6
+execution_id=$7
+shift 7
+set -a
+# shellcheck source=/dev/null
+source "$env_file"
+set +a
+"$binary_path" -profile "$profile" -report "$report" \
+  -shard-index "$shard_index" -shard-count "$shard_count" \
+  -execution-id "$execution_id" "$@"
+REMOTE
+  cluster_scp "$host:$remote_report" "$local_report" >/dev/null || return 1
+  cluster_ssh "$host" "[[ ! -e '$remote_report' ]] || unlink '$remote_report'" >/dev/null || true
+  jq -e --arg runId "$run_id" --arg profile "$profile" \
+    '.schemaVersion == "acceptance-load-report/v1" and .runId == $runId and .profile == $profile and .secretSafe == true' \
+    "$local_report" >/dev/null || return 1
+  return "$status"
+}
+
+merge_remote_load_reports() {
+  local profile=$1
+  local ningbo_report=$2
+  local hongkong_report=$3
+  local output=$4
+  jq -s --arg profile "$profile" '
+    def sum_field($name): [.[].phases[0][$name] // 0] | add;
+    def max_field($name): [.[].phases[0][$name] // 0] | max;
+    . as $reports
+    | {
+        schemaVersion:"acceptance-load-report/v1",
+        runId:$reports[0].runId,
+        profile:$profile,
+        startedAt:([$reports[].startedAt] | min),
+        finishedAt:([$reports[].finishedAt] | max),
+        passed:([$reports[].passed] | all),
+        phases:[{
+          name:$profile,
+          requests:sum_field("requests"),
+          completed:sum_field("completed"),
+          failed:sum_field("failed"),
+          durationMs:max_field("durationMs"),
+          submissionDurationMs:max_field("submissionDurationMs"),
+          p50Ms:max_field("p50Ms"),
+          p95Ms:max_field("p95Ms"),
+          p99Ms:max_field("p99Ms"),
+          decodedOutputBytes:sum_field("decodedOutputBytes"),
+          outputSha256:([$reports[].phases[0].outputSha256 // ""] | map(select(length>0)) | first // ""),
+          uniqueTaskIds:sum_field("uniqueTaskIds"),
+          uniqueImageCombinations:max_field("uniqueImageCombinations"),
+          forcedConversionTasks:sum_field("forcedConversionTasks"),
+          throttled:sum_field("throttled"),
+          unexpected5xx:sum_field("unexpected5xx"),
+          offeredRatePerSecond:sum_field("offeredRatePerSecond")
+        }],
+        failure:([$reports[] | select(.passed == false) | .failure] | first // null),
+        failureOperation:([$reports[] | select(.passed == false) | .failureOperation] | first // null),
+        aggregation:{
+          sites:["ningbo","hongkong"],
+          percentileMethod:"conservative_max_of_site_percentiles",
+          durationMethod:"max_site_duration",
+          placement:"k3s_external_host_processes"
+        },
+        secretSafe:true
+      }
+    | with_entries(select(.value != null))
+  ' "$ningbo_report" "$hongkong_report" >"$output"
+  chmod 0600 "$output"
+}
+
+run_distributed_load_profile() {
+  local profile=$1
+  local report_path=$2
+  shift 2
+  install_remote_load_drivers
+  local artifact base ningbo_report hongkong_report ningbo_pid hongkong_pid
+  local ningbo_status=0 hongkong_status=0
+  base=$(basename "$report_path" .json)
+  artifact=$base.json
+  run_remote_load_site ningbo "$CLUSTER_NINGBO_HOST" "$profile" "$artifact" 0 "$@" &
+  ningbo_pid=$!
+  run_remote_load_site hongkong "$CLUSTER_HONGKONG_HOST" "$profile" "$artifact" 1 "$@" &
+  hongkong_pid=$!
+  wait "$ningbo_pid" || ningbo_status=$?
+  wait "$hongkong_pid" || hongkong_status=$?
+  ningbo_report=$temporary_root/ningbo-$artifact
+  hongkong_report=$temporary_root/hongkong-$artifact
+  [[ -f $ningbo_report && -f $hongkong_report ]] || return 1
+  merge_remote_load_reports "$profile" "$ningbo_report" "$hongkong_report" "$report_path"
+  (( ningbo_status == 0 && hongkong_status == 0 )) || return 1
+  jq -e '.secretSafe == true and .passed == true' "$report_path" >/dev/null
+}
+
 run_load_profile() {
   local profile=$1
   local report_path=$2
   [[ $profile =~ ^[a-z-]+$ ]] || return 1
+  if [[ $profile != real-canary ]]; then
+    run_distributed_load_profile "$profile" "$report_path"
+    return
+  fi
   local load_stdout=$temporary_root/load-$profile-stdout.json
   AI_GATEWAY_ACCEPTANCE_GATEWAYS="$AI_GATEWAY_ACCEPTANCE_GATEWAYS" \
   AI_GATEWAY_ACCEPTANCE_GATEWAY_TLS_SERVER_NAME="$AI_GATEWAY_ACCEPTANCE_GATEWAY_TLS_SERVER_NAME" \
@@ -1919,6 +2102,7 @@ run_load_profile() {
   AI_GATEWAY_ACCEPTANCE_VIDEO_MODEL="$AI_GATEWAY_ACCEPTANCE_VIDEO_MODEL" \
   AI_GATEWAY_ACCEPTANCE_REAL_IMAGE_URLS="$AI_GATEWAY_ACCEPTANCE_REAL_IMAGE_URLS" \
     "$acceptance_load_binary" -profile "$profile" -report "$report_path" \
+      -execution-id "$(basename "$report_path" .json)" \
       >"$load_stdout"
   jq -e '.secretSafe == true and .passed == true' "$report_path" >/dev/null
 }
@@ -2617,6 +2801,7 @@ finish_and_report() {
   local gemini_invalid video_invalid reference_count_3 reference_count_6 reference_count_9
   local reference_role_count first_frame_role_count last_frame_role_count
   local unique_image_hashes unique_video_tasks
+  local unique_gemini_input_hashes direct_gemini_input_assets
   local duplicate_remote_tasks duplicate_terminal_events duplicate_settlements
   local duplicate_wallet_transactions duplicate_callback_rows pending_settlements pending_callbacks
   local missing_billings
@@ -2625,6 +2810,19 @@ finish_and_report() {
   gemini_task_count=$(database_query "SELECT count(*) FROM gateway_tasks WHERE acceptance_run_id='$run_id'::uuid AND kind='images.edits' AND run_mode='acceptance';")
   forced_tasks=$(database_query "SELECT count(*) FROM gateway_tasks WHERE acceptance_run_id='$run_id'::uuid AND request::text LIKE '%acceptance-force-conversion%';")
   compact_payloads=$(database_query "SELECT count(*) FROM gateway_tasks WHERE acceptance_run_id='$run_id'::uuid AND kind='images.edits' AND (pg_column_size(request) >= 1048576 OR pg_column_size(result) >= 1048576);")
+  unique_gemini_input_hashes=$(database_query "
+SELECT count(DISTINCT request #>> '{image,assetRef,sha256}')
+FROM gateway_tasks
+WHERE acceptance_run_id='$run_id'::uuid
+  AND kind='images.edits'
+  AND run_mode='acceptance';")
+  direct_gemini_input_assets=$(database_query "
+SELECT count(*)
+FROM gateway_tasks
+WHERE acceptance_run_id='$run_id'::uuid
+  AND kind='images.edits'
+  AND run_mode='acceptance'
+  AND request #>> '{image,assetRef,storageProvider}' = 'aliyun_oss_direct';")
   submissions=$(jq -r '.videoSubmissions' "$emulator_report")
   duplicates=$(jq -r '.duplicates' "$callback_report")
   callbacks=$(jq -r '.deliveries' "$callback_report")
@@ -2653,6 +2851,10 @@ finish_and_report() {
      $missing_idempotency == 0 && $compact_payloads == 0 ]] ||
     fail_acceptance_gate idempotency_and_materialization \
       'duplicate submission, missing idempotency key, or inline database media detected'
+  [[ $unique_gemini_input_hashes == "$gemini_task_count" &&
+     $direct_gemini_input_assets == "$gemini_task_count" ]] ||
+    fail_acceptance_gate gemini_input_materialization \
+      'Gemini inputs were reused across executions or bypassed direct OSS materialization'
   [[ $gemini_invalid == 0 && $video_invalid == 0 ]] ||
     fail_acceptance_gate provider_protocol_validity 'Gemini or Volces protocol validation failed'
   [[ $reference_count_3 -gt 0 && $reference_count_6 -gt 0 && $reference_count_9 -gt 0 ]] ||
@@ -2796,6 +2998,8 @@ WHERE task.acceptance_run_id='$run_id'::uuid
     --argjson lastFrameRoleCount "$last_frame_role_count" \
     --argjson uniqueImageHashes "$unique_image_hashes" \
     --argjson uniqueVideoTasks "$unique_video_tasks" \
+    --argjson uniqueGeminiInputHashes "$unique_gemini_input_hashes" \
+    --argjson directGeminiInputAssets "$direct_gemini_input_assets" \
     --argjson duplicateRemoteTasks "$duplicate_remote_tasks" \
     --argjson duplicateTerminalEvents "$duplicate_terminal_events" \
     --argjson duplicateSettlements "$duplicate_settlements" \
@@ -2838,7 +3042,9 @@ WHERE task.acceptance_run_id='$run_id'::uuid
           last_frame:$lastFrameRoleCount
         },
         uniqueImageHashes:$uniqueImageHashes,
-        uniqueVideoTasks:$uniqueVideoTasks
+        uniqueVideoTasks:$uniqueVideoTasks,
+        uniqueGeminiInputHashes:$uniqueGeminiInputHashes,
+        directGeminiInputAssets:$directGeminiInputAssets
       },
       databaseConsistency:{
         duplicateRemoteTasks:$duplicateRemoteTasks,