chore(workbench): remove legacy trace gap-fill remnants

docs/reference/cloud-workbench.md

@@ -31,9 +31,9 @@ Cloud Web 的通用加载态使用 `web/hwlab-cloud-web/src/components/common/Lo
 
 Session rail 是该规则的高频区域。`/v1/agent/conversations` 还未返回时，即使 workspace 中已有 `selectedConversationId`、sessionId、traceId 或 selected conversation snapshot，也不能把选中 session stub 渲染成单条 `.session-tab`，更不能让它占满整个 session 列表高度。加载窗口应只显示 `LoadingState`，并隐藏当前 trace 元信息、复制/删除等依赖真实 active tab 的动作；待 conversations ready 后再渲染真实 session tabs，或在真实空集合时显示空态。
 
-Session rail 的后台恢复刷新必须有硬边界。显式用户动作或强一致操作（例如选择会话、删除当前会话）可以立即刷新会话列表；SSE error、active trace REST gap-fill、terminal refresh、trace hydration 等后台补偿路径不得绕过 session list 的冷却/合并机制去强制刷新完整列表。后台路径应优先补当前 trace、turn status、message projection 和必要的 trace events；需要刷新 session rail 时走统一的 scheduled refresh，并按 session/list key 合并已有 timer，避免网络抖动或 EventSource error storm 把 `/v1/workbench/sessions` 放大成浏览器内存和 CDP responsiveness 红灯。
+Session rail 的后台恢复刷新必须有硬边界。显式用户动作或强一致操作（例如选择会话、删除当前会话）可以立即刷新会话列表；SSE error、active trace sync replay、terminal refresh、trace hydration 等后台补偿路径不得绕过 session list 的冷却/合并机制去强制刷新完整列表。后台路径应优先补当前 trace、turn status、message projection 和必要的 trace events；需要刷新 session rail 时走统一的 scheduled refresh，并按 session/list key 合并已有 timer，避免网络抖动或 EventSource error storm 把 `/v1/workbench/sessions` 放大成浏览器内存和 CDP responsiveness 红灯。
 
-Workbench realtime 恢复与 REST gap-fill 必须统一接入已经迁移的 OpenCode-style runtime 模块。`workbench-stream-transport` 只拥有 SSE lifecycle、cursor 和 recovery reason；`workbench-realtime-plan` 只把 transport action 转成纯 plan；`workbench-refresh-runtime`、keyed singleflight、scheduled task runtime、trace hydration queue、server-state reducer 和 session cache 是恢复读取的唯一 substrate。`workbench.ts` 不得再持有新的 in-flight map、timer map、cursor map、REST gap-fill queue 或第二套 recovery coordinator。`force` 是用户显式操作和恢复优先级语义，不得绕过同 key 的 singleflight、cooldown、min interval 或 storm budget；这些预算、退避、并发、页数、重试和窗口参数只由 node/lane YAML-backed runtime policy 注入，SPEC 只声明字段族、责任边界和验收读取方式，不写死数值。
+Workbench realtime 恢复与 sync replay 必须统一接入已经迁移的 OpenCode-style runtime 模块。`workbench-stream-transport` 只拥有 SSE lifecycle、cursor 和 recovery reason；`workbench-realtime-plan` 只把 transport action 转成纯 plan；`workbench-refresh-runtime`、keyed singleflight、scheduled task runtime、trace hydration queue、server-state reducer 和 session cache 是恢复读取的唯一 substrate。`workbench.ts` 不得再持有新的 in-flight map、timer map、cursor map、REST recovery queue 或第二套 recovery coordinator。`force` 是用户显式操作和恢复优先级语义，不得绕过同 key 的 singleflight、cooldown、min interval 或 storm budget；这些预算、退避、并发、页数、重试和窗口参数只由 node/lane YAML-backed runtime policy 注入，SPEC 只声明字段族、责任边界和验收读取方式，不写死数值。
 
 Workbench Realtime Authority v2 的自动恢复只允许消费 SSE typed event 和 `/v1/workbench/sync` replay。`/workbench/sync` 返回的 durable `delta.messages`、`delta.turns` 等 family object 必须在前端 authority 层投影成带 `realtimeAuthority`、entity family/id/version 和 projection revision 的 `message.snapshot`、`turn.snapshot` 等 typed event，再进入统一 reducer；不得把 family delta 当成不可应用的普通对象，也不得用 `/v1/workbench/sessions/:id/messages`、`/v1/workbench/turns/:id` 或 `/v1/workbench/traces/:id/events` 自动 fan-out 补洞。跨 tab/page 的 `session-projection` signal 只能触发同一 `/workbench/sync` replay 或临时 optimistic echo，最终必须由 durable sync delta 覆盖并让 control/observer 页在同一个 session 上收敛到相同 messages/turn projection。`workbench-server-state` 的 `message.snapshot` guard 只能拒绝无 messageId、无 trace 或当前会话没有同 trace 上下文的孤儿 agent snapshot；durable user fact 之后到达的同 trace agent snapshot 必须可追加。新增修复应覆盖“observer 从空消息状态应用 sync replay 后得到 user/agent messages 与 turn status”的最小测试，并用 web-probe `observe analyze` 确认没有 persistent `cross-page-projection-divergence` 或 automatic recovery legacy fan-out 红项。
 

internal/cloud/server-code-agent-http.ts

@@ -2546,8 +2546,9 @@ function codeAgentCompatProjectionPayload(payload = {}, context = {}) {
     staleMs: projection.staleMs ?? null,
     blocker: projection.blocker ?? null,
     workbench: traceId ? {
-      turnUrl: `/v1/workbench/turns/${encodeURIComponent(traceId)}`,
-      traceEventsUrl: `/v1/workbench/traces/${encodeURIComponent(traceId)}/events`
+      detailOnly: true,
+      turnDetailUrl: `/v1/workbench/turns/${encodeURIComponent(traceId)}`,
+      traceEventsDetailUrl: `/v1/workbench/traces/${encodeURIComponent(traceId)}/events`
     } : null,
     valuesRedacted: true,
     secretMaterialStored: false

internal/cloud/web-performance.test.ts

@@ -262,6 +262,7 @@ test("web performance summary exposes Workbench p75 and low-sample diagnostics w
   assert.ok(summary.dashboard.trends.some((trend) => trend.id === "workbench-experience" && trend.points.some((point) => point.label === "提交到首个可见结果")));
   assert.ok(summary.dashboard.distributions.some((distribution) => distribution.id === "samples" && distribution.buckets.some((bucket) => bucket.label === "低样本")));
   assert.ok(summary.workbenchJourneys.some((row) => row.metric === "submit_to_first_visible" && row.backend === "agentrun-v01/codex" && row.p75 >= row.p50 && row.lowSample === true && row.sampleState === "low-sample"));
+  assert.ok(summary.workbenchJourneys.some((row) => row.metric === "session_switch_first_visible" && row.transport === "detail_history"));
   assert.ok(summary.workbenchEventPhases.some((row) => row.phase === "created_to_append" && row.eventType === "backend" && row.transport === "sse"));
   assert.ok(summary.workbenchBackendEvents.some((row) => row.metric === "backend_event_to_visible" && row.eventType === "terminal" && row.backend === "agentrun-v01/codex"));
   assert.equal(summary.summary.problemCount, 0);

internal/cloud/web-performance.ts

@@ -41,7 +41,7 @@ const WORKBENCH_EVENT_PHASES = new Set([
   "api_accepted_to_backend_event"
 ]);
 const WORKBENCH_EVENT_TYPES = new Set(["assistant", "tool_call", "backend", "terminal", "error", "status", "request", "result", "unknown"]);
-const WORKBENCH_TRANSPORTS = new Set(["sse", "rest_gap", "poll", "none", "unknown"]);
+const WORKBENCH_TRANSPORTS = new Set(["sse", "sync_replay", "detail_history", "poll", "none", "unknown"]);
 const WORKBENCH_OUTCOMES = new Set(["ok", "timeout", "error", "dropped", "stale", "partial", "empty", "network", "denied", "unknown"]);
 const WORKBENCH_ENTRIES = new Set(["new", "existing", "steer", "retry", "unknown"]);
 const WORKBENCH_VISIBILITY = new Set(["foreground", "background", "hidden", "unknown"]);
@@ -432,7 +432,7 @@ export function createWebPerformanceStore(options: WebPerformanceStoreOptions =
       cache: optionalEnum(input.cache, WORKBENCH_CACHE_STATES, "unknown"),
       auth_state: optionalEnum(input.authState ?? field(input, "auth_state"), WORKBENCH_AUTH_STATES, "unknown"),
       backend: normalizeBackendLabel(input.backend),
-      transport: optionalEnum(input.transport, WORKBENCH_TRANSPORTS, "unknown"),
+      transport: normalizeWorkbenchTransport(input.transport),
       visibility: optionalEnum(input.visibility, WORKBENCH_VISIBILITY, "unknown"),
       outcome: optionalEnum(input.outcome, WORKBENCH_OUTCOMES, "ok")
     };
@@ -450,7 +450,7 @@ export function createWebPerformanceStore(options: WebPerformanceStoreOptions =
       phase,
       event_type: normalizeEventType(input.eventType ?? field(input, "event_type")),
       backend: normalizeBackendLabel(input.backend),
-      transport: optionalEnum(input.transport, WORKBENCH_TRANSPORTS, "unknown"),
+      transport: normalizeWorkbenchTransport(input.transport),
       outcome: optionalEnum(input.outcome, WORKBENCH_OUTCOMES, "ok")
     };
     return { series: "workbench_event_phase", metric: phase, value, labels };
@@ -464,7 +464,7 @@ export function createWebPerformanceStore(options: WebPerformanceStoreOptions =
       ...baseLabels,
       event_type: normalizeEventType(input.eventType ?? field(input, "event_type")),
       backend: normalizeBackendLabel(input.backend),
-      transport: optionalEnum(input.transport, WORKBENCH_TRANSPORTS, "unknown"),
+      transport: normalizeWorkbenchTransport(input.transport),
       outcome: optionalEnum(input.outcome, WORKBENCH_OUTCOMES, "ok")
     };
     return { series: "workbench_backend_event_visible", metric: "backend_event_to_visible", value, labels };
@@ -2128,7 +2128,7 @@ function eventTypeLabel(value: string) {
 }
 
 function transportLabel(value: string) {
-  const labels: Record<string, string> = { sse: "实时流", rest_gap: "REST 补洞", poll: "轮询", none: "无", unknown: "未知" };
+  const labels: Record<string, string> = { sse: "实时流", sync_replay: "同步回放", detail_history: "明细/历史", poll: "轮询", none: "无", unknown: "未知" };
   return labels[value] ?? value;
 }
 
@@ -2193,6 +2193,12 @@ function optionalEnum(value: unknown, allowed: Set<string>, fallback: string) {
   return allowed.has(text) ? text : fallback;
 }
 
+function normalizeWorkbenchTransport(value: unknown) {
+  const text = sanitizeMetricName(value, "unknown");
+  const aliased = text === "rest_gap" ? "detail_history" : text;
+  return WORKBENCH_TRANSPORTS.has(aliased) ? aliased : "unknown";
+}
+
 function normalizeEventType(value: unknown) {
   const text = sanitizeMetricName(value, "unknown");
   const aliased = text === "assistant_message" ? "assistant" : text === "tool" ? "tool_call" : text;

web/hwlab-cloud-web/scripts/check.ts

@@ -48,7 +48,7 @@ const requiredFiles = Object.freeze([
   "src/stores/workbench-timeline-model.ts",
   "src/stores/workbench-session-cache.ts",
   "src/composables/useWorkbenchScrollRuntime.ts",
-  "src/composables/useTraceSubscription.ts",
+  "src/composables/workbench-trace-snapshot.ts",
   "src/composables/useAutoRefresh.ts",
   "src/composables/useClipboard.ts",
   "src/composables/useForm.ts",
@@ -193,8 +193,8 @@ assertIncludes(workbenchColadaSource, "staleTime", "Workbench query min-interval
 assertIncludes(workbenchPerformanceSource, "recordWorkbenchRuntimeDiagnostic", "Workbench performance probe must record runtime diagnostics for monitor root cause visibility");
 assertIncludes(workbenchPerformanceSource, "clearResourceTimings", "Workbench performance probe must bound browser ResourceTiming retention after API enrichment");
 assertIncludes(workbenchStoreSource, "recordWorkbenchRuntimeDiagnostic", "Workbench store must surface SSE recovery diagnostics to the performance probe");
-assertIncludes(workbenchRealtimePlanSource, "new Set(recovery.actions)", "Realtime recovery planner must consume transport-owned actions explicitly");
-assertIncludes(workbenchRealtimePlanSource, "actions.has(\"schedule-session-list\")", "Realtime stream errors must schedule bounded session list refreshes only when transport requests that action");
+assertIncludes(workbenchRealtimePlanSource, "recovery.actions.includes(\"sync-replay\")", "Realtime recovery planner must consume transport-owned actions explicitly");
+assert.doesNotMatch(workbenchRealtimePlanSource, /schedule-session-list/u, "Realtime recovery planner must not restore legacy session-list repair actions");
 assertIncludes(workbenchRealtimePlanSource, "authority: \"automatic-recovery\"", "Realtime recovery planner must classify transport recovery as automatic recovery authority");
 assert.doesNotMatch(workbenchRealtimePlanSource, /force:\s*true/u, "Realtime recovery planner must not turn transport recovery into force-refresh work");
 assertIncludes(workbenchColadaSource, "const state = await queryCache.refresh(entry);", "Workbench reads must preserve Colada staleTime/min-interval governance");
@@ -204,7 +204,7 @@ assertIncludes(workbenchStoreSource, "workbenchColadaQueries.fetchSession", "Rea
 assertIncludes(workbenchStoreSource, "runtimePolicy.workbenchSessionDetailMinRefreshMs", "Realtime session detail recovery budget must come from runtime policy");
 assert.doesNotMatch(workbenchStoreSource, /refreshRealtimeSessionMessages[\s\S]{0,900}refreshSessionMessageProjectionPage\(id, \{ force: true \}\)/u, "Realtime session message recovery must not force-bypass the message projection refresh budget");
 assert.doesNotMatch(workbenchStoreSource, /handleRealtimeStreamError[\s\S]{0,1200}refreshSessions\([^;]+force:\s*true/u, "Realtime stream errors must not force-refresh the full session list");
-assert.doesNotMatch(workbenchStoreSource, /refreshActiveTraceFromRest[\s\S]{0,1200}refreshSessions\([^;]+force:\s*true/u, "Active trace REST gap-fill must not force-refresh the full session list");
+assert.doesNotMatch(workbenchStoreSource, /refreshActiveTraceFromRest[\s\S]{0,1200}refreshSessions\([^;]+force:\s*true/u, "Active trace sync replay must not force-refresh the full session list");
 assert.doesNotMatch(workbenchStoreSource, /refreshTerminalTraceFromRest[\s\S]{0,1200}refreshSessions\([^;]+force:\s*true/u, "Terminal trace REST refresh must not force-refresh the full session list");
 assert.doesNotMatch(workbenchStoreSource, /message\.runnerTrace(?:\?\.|\.)status/u, "Workbench message lifecycle must not be inferred from runnerTrace.status");
 assert.doesNotMatch(conversationPanelSource, /message\.runnerTrace(?:\?\.|\.)status/u, "ConversationPanel must not override message completion from runnerTrace.status");

web/hwlab-cloud-web/scripts/workbench-performance.test.ts

@@ -264,15 +264,15 @@ test("Workbench submit first visible waits for terminal final or tool output", (
   const appendedAt = new Date(wallBase - 11_500).toISOString();
   const backendEvent = { label: "agentrun:run:createdAgentRun", backend: "agentrun-v01/codex", createdAt, appendedAt, message: "AgentRun created." } as TraceEvent;
   startWorkbenchSubmitJourney({ traceId: "trc_secret", sessionId: "ses_secret", entry: "existing", backend: "codex", transport: "sse" });
-  markWorkbenchTraceEventsReceived({ traceId: "trc_secret", transport: "rest_gap", events: [backendEvent] });
+  markWorkbenchTraceEventsReceived({ traceId: "trc_secret", transport: "detail_history", events: [backendEvent] });
   markWorkbenchTraceProjected("trc_secret");
   acknowledgeWorkbenchVisible({ messages: [traceOnlyAgentMessage("ses_secret", "trc_secret", [backendEvent])], activeSessionId: "ses_secret", detailLoading: false });
 
   const backendOnlyEvents = drainWorkbenchPerformanceEventsForTest();
   assert.equal(backendOnlyEvents.some((event) => event.kind === "workbench_journey" && event.journey === "submit_to_first_visible"), false);
   assert.equal(backendOnlyEvents.some((event) => event.kind === "workbench_event_phase" && event.phase === "sse_to_receive"), false);
-  assert.ok(backendOnlyEvents.some((event) => event.kind === "workbench_event_phase" && event.phase === "created_to_append" && event.eventType === "backend" && event.transport === "rest_gap"));
-  assert.ok(backendOnlyEvents.some((event) => event.kind === "workbench_event_phase" && event.phase === "receive_to_project" && event.eventType === "backend" && event.transport === "rest_gap"));
+  assert.ok(backendOnlyEvents.some((event) => event.kind === "workbench_event_phase" && event.phase === "created_to_append" && event.eventType === "backend" && event.transport === "detail_history"));
+  assert.ok(backendOnlyEvents.some((event) => event.kind === "workbench_event_phase" && event.phase === "receive_to_project" && event.eventType === "backend" && event.transport === "detail_history"));
   assert.equal(backendOnlyEvents.some((event) => event.kind === "workbench_backend_event_visible" && event.eventType === "backend" && event.outcome === "stale"), false);
 
   acknowledgeWorkbenchVisible({ messages: [traceOnlyAgentMessage("ses_secret", "trc_secret", [{ type: "assistant_message", status: "running", message: "progress only" } as TraceEvent])], activeSessionId: "ses_secret", detailLoading: false });

web/hwlab-cloud-web/scripts/workbench-r1-parity.test.ts

@@ -3,7 +3,7 @@ import test from "node:test";
 
 import type { AgentRunProvenance, ChatMessage, TraceEvent } from "../src/types/index.ts";
 import { canCancelMessage, canRetryMessage, messageTraceId, renderSafeMarkdown, traceEventBody, traceEventLabel, traceIdentityText, visibleTraceEvents } from "../src/components/workbench/message-rendering.ts";
-import { mergeRunnerTrace } from "../src/composables/useTraceSubscription.ts";
+import { mergeRunnerTrace } from "../src/composables/workbench-trace-snapshot.ts";
 import { traceDisplayRows, traceNoiseEventCount } from "../../../tools/src/hwlab-cli/trace-renderer.ts";
 
 test("R1 markdown rendering keeps structure and strips unsafe HTML", () => {

web/hwlab-cloud-web/scripts/workbench-realtime-runtime.test.ts

@@ -38,7 +38,7 @@ test("Workbench runtime policy reads injected config while preserving defaults",
     workbenchSessionDetailMinRefreshMs: 1234,
     workbenchSessionMessagesWindowLimit: 9,
     workbenchTraceMessagesWindowLimit: 4,
-    workbenchRealtimeErrorGapFillMinMs: 0,
+    workbenchRealtimeErrorSyncReplayMinMs: 0,
     workbenchRealtimeFlushMaxItemsPerChunk: 2,
     workbenchRealtimeFlushMaxChunkMs: 6,
     workbenchRealtimeFlushYieldMs: 5,
@@ -50,7 +50,7 @@ test("Workbench runtime policy reads injected config while preserving defaults",
   assert.equal(policy.workbenchSessionDetailMinRefreshMs, 1234);
   assert.equal(policy.workbenchSessionMessagesWindowLimit, 9);
   assert.equal(policy.workbenchTraceMessagesWindowLimit, 4);
-  assert.equal(policy.workbenchRealtimeErrorGapFillMinMs, 0);
+  assert.equal(policy.workbenchRealtimeErrorSyncReplayMinMs, 0);
   assert.equal(policy.workbenchRealtimeFlushMaxItemsPerChunk, 2);
   assert.equal(policy.workbenchRealtimeFlushMaxChunkMs, 6);
   assert.equal(policy.workbenchRealtimeFlushYieldMs, 5);

web/hwlab-cloud-web/src/api/workbench-events.ts

@@ -1,5 +1,5 @@
 // SPEC: PJ2026-0106050514 Workbench实时运行面 draft-2026-06-30-p0-1297-spec-first; PJ2026-010403 API契约 draft-2026-06-18-r1; PJ2026-010401 Web工作台 draft-2026-06-18-r1; PJ2026-01060505 Workbench Performance draft-2026-06-17-p0; PJ2026-010401080313 Workbench实时权威 draft-2026-07-08-p0-workbench-realtime-authority-v2.
-// Responsibility: Workbench SSE client. Realtime events accelerate UI projection; REST snapshots remain gap-fill authority.
+// Responsibility: Workbench SSE client. Realtime events and sync replay are projection authority; REST routes are detail/history reads.
 
 import { fetchJson, type ApiRequestOptions } from "@/api/client";
 import type { ApiResult, ChatMessage, ProjectionDiagnostic, TraceEvent } from "@/types";

web/hwlab-cloud-web/src/composables/workbench-trace-snapshot.test.ts

@@ -2,7 +2,7 @@ import assert from "node:assert/strict";
 import { test } from "bun:test";
 
 import type { ChatMessage, TraceEvent } from "@/types";
-import { mergeRunnerTrace } from "./useTraceSubscription";
+import { mergeRunnerTrace } from "./workbench-trace-snapshot";
 
 function event(projectedSeq: number, label = `event-${projectedSeq}`): TraceEvent {
   return { projectedSeq, label, type: "event" };

web/hwlab-cloud-web/src/composables/workbench-trace-snapshot.ts

@@ -1,8 +1,7 @@
 // SPEC: PJ2026-0104010803 Workbench唯一投影 draft-2026-06-18-p0-unique-projection; PJ2026-010401 Web工作台 draft-2026-06-18-r1.
-// Responsibility: Trace snapshot helpers and legacy subscription adapter backed by Workbench read-model APIs.
+// Responsibility: Trace snapshot helpers for Workbench realtime authority reducers.
 
-import { workbenchAPI, type ActivityRefSource } from "@/api";
-import type { AgentChatResponse, AgentChatResultResponse, AgentRunProvenance, ChatMessage, ProjectionDiagnostic, TraceEvent, WorkbenchTurnTimingProjection } from "@/types";
+import type { AgentChatResultResponse, AgentRunProvenance, ChatMessage, ProjectionDiagnostic, TraceEvent, WorkbenchTurnTimingProjection } from "@/types";
 import { firstNonEmptyString } from "@/utils";
 
 export interface TraceSnapshot {
@@ -40,31 +39,6 @@ export interface TraceSnapshot {
   updatedAt?: string;
 }
 
-export interface TraceSubscriptionConfig {
-  traceId: string;
-  initial: AgentChatResponse;
-  onActivity: () => void;
-  onSnapshot: (snapshot: TraceSnapshot) => void;
-  onComplete: (result: AgentChatResultResponse) => void;
-  onInfrastructureError: (error: string) => void;
-  signal: AbortSignal;
-  inactivityTimeoutMs: number;
-  activityRef: ActivityRefSource;
-}
-
-const TRACE_POLL_INTERVAL_MS = 1500;
-const TRACE_LIVE_PAGE_LIMIT = 80;
-const TRACE_LIVE_MAX_PAGES_PER_POLL = 4;
-
-export function isTerminalStatus(status: string | undefined): boolean {
-  if (!status) return false;
-  return ["completed", "failed", "blocked", "timeout", "cancelled", "canceled"].includes(String(status));
-}
-
-export function isResultUrlStatus(response: AgentChatResponse): boolean {
-  return Boolean(response.resultUrl) && (response.status === "running" || response.status === "accepted" || isTerminalStatus(response.status));
-}
-
 export function snapshotToRunnerTrace(snapshot: TraceSnapshot): NonNullable<ChatMessage["runnerTrace"]> {
   const events = Array.isArray(snapshot.events) ? snapshot.events : [];
   return {
@@ -348,195 +322,3 @@ export function mergeTraceResults(terminal: AgentChatResultResponse, trace: Trac
     lastEventLabel: mergedTrace.lastEventLabel ?? terminal.lastEventLabel ?? undefined
   };
 }
-
-export async function subscribeToTrace(config: TraceSubscriptionConfig): Promise<void> {
-  const { traceId, initial, onActivity, onSnapshot, onComplete, onInfrastructureError, signal, inactivityTimeoutMs, activityRef } = config;
-  if (isTerminalStatus(initial.status)) {
-    const snapshot = resultToTraceSnapshot(traceId, initial as AgentChatResultResponse, "turn-api");
-    onSnapshot(snapshot);
-    onComplete(mergeTraceResults(initial as AgentChatResultResponse, snapshot));
-    return;
-  }
-  if (!initial.turnUrl && !traceId) {
-    onInfrastructureError("Code Agent initial response is missing traceId for turn status polling");
-    return;
-  }
-
-  let lastSnapshotKey = "";
-  let traceAfterProjectedSeq = 0;
-  let accumulatedTrace: TraceSnapshot | null = null;
-
-  const fetchLiveTracePages = async (): Promise<TraceSnapshot | null> => {
-    for (let page = 0; page < TRACE_LIVE_MAX_PAGES_PER_POLL; page += 1) {
-      const previousProjectedSeq = traceAfterProjectedSeq;
-      const tracePolled = await workbenchAPI.traceEvents(traceId, inactivityTimeoutMs, activityRef, { afterProjectedSeq: traceAfterProjectedSeq, limit: TRACE_LIVE_PAGE_LIMIT });
-      if (signal.aborted) return accumulatedTrace;
-      if (!tracePolled.ok || !tracePolled.data) return accumulatedTrace;
-      onActivity();
-      const pageSnapshot = resultToTraceSnapshot(traceId, tracePolled.data, "trace-api");
-      accumulatedTrace = mergeTraceSnapshots(accumulatedTrace, pageSnapshot);
-      const nextProjectedSeq = traceSnapshotNextProjectedSeq(pageSnapshot, traceAfterProjectedSeq);
-      if (nextProjectedSeq > traceAfterProjectedSeq) traceAfterProjectedSeq = nextProjectedSeq;
-      if (pageSnapshot.hasMore !== true || nextProjectedSeq <= previousProjectedSeq) break;
-    }
-    return accumulatedTrace;
-  };
-
-  for (;;) {
-    if (signal.aborted) return;
-    await sleep(TRACE_POLL_INTERVAL_MS);
-    if (signal.aborted) return;
-
-    const turnPolled = await workbenchAPI.turn(traceId, inactivityTimeoutMs, activityRef);
-    if (signal.aborted) return;
-
-    if (turnPolled.ok && turnPolled.data) {
-      onActivity();
-      const turnSnapshot = resultToTraceSnapshot(traceId, turnPolled.data, "turn-api");
-      const liveTrace = await fetchLiveTracePages();
-      if (signal.aborted) return;
-      const snapshot = traceSnapshotWithTurnStatus(liveTrace ?? turnSnapshot, turnSnapshot);
-      const snapshotKey = traceSnapshotSignalKey(snapshot);
-      if (snapshotKey !== lastSnapshotKey) {
-        lastSnapshotKey = snapshotKey;
-        onSnapshot(snapshot);
-      }
-      if (turnPolled.data.terminal === true || isTerminalStatus(turnPolled.data.status)) {
-        onComplete(mergeTraceResults(turnPolled.data, accumulatedTrace ?? snapshot));
-        return;
-      }
-    } else if (!turnPolled.ok && turnPolled.status >= 500) {
-      // Backend hiccup: keep polling and let inactivity-timeout classify a real outage.
-    } else {
-      onInfrastructureError(turnPolled.error ?? "Code Agent turn status poll failed (non-5xx)");
-      return;
-    }
-  }
-}
-
-function resultToTraceSnapshot(traceId: string, result: AgentChatResultResponse, eventSource = "trace-api"): TraceSnapshot {
-  const events = Array.isArray(result.events) ? result.events : Array.isArray(result.traceEvents) ? result.traceEvents : [];
-  const lastEvent = events.at(-1);
-  const timing = result.timing ?? null;
-  return {
-    traceId: result.traceId ?? traceId,
-    status: result.status,
-    sessionId: result.sessionId ?? null,
-    threadId: result.threadId ?? null,
-    events,
-    eventCount: result.eventCount ?? events.length,
-    eventsCompacted: result.runnerTrace?.eventsCompacted,
-    fullTraceLoaded: result.fullTraceLoaded,
-    hasMore: result.hasMore,
-    truncated: result.truncated,
-    nextProjectedSeq: typeof result.nextProjectedSeq === "number" ? result.nextProjectedSeq : null,
-    range: result.range as TraceSnapshot["range"],
-    agentRun: result.agentRun,
-    traceStatus: result.traceStatus,
-    retention: result.retention,
-    terminalEvidence: result.terminalEvidence,
-    traceSummary: result.traceSummary,
-    error: result.error,
-    timing,
-    startedAt: result.startedAt ?? timing?.startedAt ?? null,
-    lastEventAt: result.lastEventAt ?? timing?.lastEventAt ?? null,
-    finishedAt: result.finishedAt ?? timing?.finishedAt ?? null,
-    durationMs: result.durationMs ?? timing?.durationMs ?? null,
-    projection: result.projection ?? result.runnerTrace?.projection ?? null,
-    projectionStatus: result.projectionStatus ?? result.runnerTrace?.projectionStatus ?? null,
-    projectionHealth: result.projectionHealth ?? result.runnerTrace?.projectionHealth ?? null,
-    staleMs: result.staleMs ?? result.runnerTrace?.staleMs ?? null,
-    blocker: result.blocker ?? result.runnerTrace?.blocker ?? null,
-    lastEventLabel: result.lastEventLabel ?? lastEvent?.label ?? lastEvent?.type,
-    eventSource,
-    updatedAt: new Date().toISOString()
-  };
-}
-
-function mergeTraceSnapshots(previous: TraceSnapshot | null, next: TraceSnapshot): TraceSnapshot {
-  if (!previous) return next;
-  const previousEvents = Array.isArray(previous.events) ? previous.events : [];
-  const nextEvents = Array.isArray(next.events) ? next.events : [];
-  const events = mergeTraceEvents(previousEvents, nextEvents);
-  const timing = mergeTraceTimingProjection(previous, next);
-  return {
-    ...previous,
-    ...next,
-    events,
-    eventCount: next.eventCount ?? previous.eventCount ?? events.length,
-    timing,
-    startedAt: timing?.startedAt ?? next.startedAt ?? next.timing?.startedAt ?? previous.startedAt ?? previous.timing?.startedAt ?? null,
-    lastEventAt: timing?.lastEventAt ?? next.lastEventAt ?? next.timing?.lastEventAt ?? previous.lastEventAt ?? previous.timing?.lastEventAt ?? null,
-    finishedAt: timing?.finishedAt ?? next.finishedAt ?? next.timing?.finishedAt ?? previous.finishedAt ?? previous.timing?.finishedAt ?? null,
-    durationMs: timing?.durationMs ?? next.durationMs ?? next.timing?.durationMs ?? previous.durationMs ?? previous.timing?.durationMs ?? null,
-    lastEventLabel: next.lastEventLabel ?? previous.lastEventLabel ?? undefined,
-    updatedAt: next.updatedAt ?? previous.updatedAt ?? new Date().toISOString()
-  };
-}
-
-function traceSnapshotWithTurnStatus(trace: TraceSnapshot, turn: TraceSnapshot): TraceSnapshot {
-  const timing = mergeTraceTimingProjection(trace, turn);
-  return {
-    ...trace,
-    traceId: trace.traceId ?? turn.traceId,
-    status: turn.status ?? trace.status,
-    sessionId: trace.sessionId ?? turn.sessionId,
-    threadId: trace.threadId ?? turn.threadId,
-    agentRun: trace.agentRun ?? turn.agentRun,
-    traceStatus: trace.traceStatus ?? turn.traceStatus,
-    terminalEvidence: trace.terminalEvidence ?? turn.terminalEvidence,
-    traceSummary: trace.traceSummary ?? turn.traceSummary,
-    error: trace.error ?? turn.error,
-    timing,
-    startedAt: timing?.startedAt ?? turn.startedAt ?? turn.timing?.startedAt ?? trace.startedAt ?? trace.timing?.startedAt ?? null,
-    lastEventAt: timing?.lastEventAt ?? turn.lastEventAt ?? turn.timing?.lastEventAt ?? trace.lastEventAt ?? trace.timing?.lastEventAt ?? null,
-    finishedAt: timing?.finishedAt ?? turn.finishedAt ?? turn.timing?.finishedAt ?? trace.finishedAt ?? trace.timing?.finishedAt ?? null,
-    durationMs: timing?.durationMs ?? turn.durationMs ?? turn.timing?.durationMs ?? trace.durationMs ?? trace.timing?.durationMs ?? null,
-    projection: trace.projection ?? turn.projection ?? null,
-    projectionStatus: trace.projectionStatus ?? turn.projectionStatus ?? null,
-    projectionHealth: trace.projectionHealth ?? turn.projectionHealth ?? null,
-    staleMs: trace.staleMs ?? turn.staleMs ?? null,
-    blocker: trace.blocker ?? turn.blocker ?? null,
-    waitingFor: trace.waitingFor ?? turn.waitingFor,
-    updatedAt: new Date().toISOString()
-  };
-}
-
-function traceSnapshotNextProjectedSeq(snapshot: TraceSnapshot, fallback: number): number {
-  const direct = Number(snapshot.nextProjectedSeq ?? snapshot.range?.toProjectedSeq);
-  if (Number.isFinite(direct) && direct >= 0) return Math.trunc(direct);
-  const events = Array.isArray(snapshot.events) ? snapshot.events : [];
-  return events.reduce((max, event) => {
-    const seq = traceEventProjectedSeq(event);
-    return Number.isFinite(seq) && seq > max ? Math.trunc(seq) : max;
-  }, fallback);
-}
-
-function traceSnapshotSignalKey(snapshot: TraceSnapshot): string {
-  const events = Array.isArray(snapshot.events) ? snapshot.events : [];
-  return [
-    snapshot.status ?? "",
-    snapshot.traceStatus ?? "",
-    snapshot.eventCount ?? events.length,
-    events.length,
-    snapshot.nextProjectedSeq ?? snapshot.range?.toProjectedSeq ?? "",
-    snapshot.lastEventAt ?? snapshot.timing?.lastEventAt ?? "",
-    snapshot.durationMs ?? snapshot.timing?.durationMs ?? "",
-    snapshot.hasMore === true ? "more" : "caught-up",
-    snapshot.fullTraceLoaded === true ? "loaded" : "partial",
-    snapshot.lastEventLabel ?? "",
-    traceSnapshotErrorKey(snapshot.error),
-    snapshot.projectionHealth ?? snapshot.projection?.projectionHealth ?? "",
-    snapshot.projection?.blocker?.code ?? snapshot.blocker?.code ?? ""
-  ].join("|");
-}
-
-function traceSnapshotErrorKey(error: TraceSnapshot["error"]): string {
-  if (!error) return "";
-  if (typeof error === "string") return error;
-  return firstNonEmptyString(error.code, error.message) ?? "";
-}
-
-function sleep(ms: number): Promise<void> {
-  return new Promise((resolve) => window.setTimeout(resolve, ms));
-}

web/hwlab-cloud-web/src/config/workbench-runtime-policy.ts

@@ -25,12 +25,12 @@ export interface WorkbenchRuntimePolicy {
   sessionListRealtimeRefreshDelayMs: number;
   sessionListTerminalRefreshDelayMs: number;
   sessionListMinRefreshIntervalMs: number;
-  workbenchRealtimeErrorGapFillMinMs: number;
+  workbenchRealtimeErrorSyncReplayMinMs: number;
   workbenchRealtimeFlushMaxItemsPerChunk: number;
   workbenchRealtimeFlushMaxChunkMs: number;
   workbenchRealtimeFlushYieldMs: number;
-  workbenchActiveTraceRestGapFillInitialMs: number;
-  workbenchActiveTraceRestGapFillRepeatMs: number;
+  workbenchActiveTraceSyncReplayInitialMs: number;
+  workbenchActiveTraceSyncReplayRepeatMs: number;
 }
 
 const DEFAULT_WORKBENCH_RUNTIME_POLICY: WorkbenchRuntimePolicy = Object.freeze({
@@ -57,12 +57,12 @@ const DEFAULT_WORKBENCH_RUNTIME_POLICY: WorkbenchRuntimePolicy = Object.freeze({
   sessionListRealtimeRefreshDelayMs: 5_000,
   sessionListTerminalRefreshDelayMs: 1_500,
   sessionListMinRefreshIntervalMs: 15_000,
-  workbenchRealtimeErrorGapFillMinMs: 2_000,
+  workbenchRealtimeErrorSyncReplayMinMs: 2_000,
   workbenchRealtimeFlushMaxItemsPerChunk: 4,
   workbenchRealtimeFlushMaxChunkMs: 8,
   workbenchRealtimeFlushYieldMs: 0,
-  workbenchActiveTraceRestGapFillInitialMs: 2_500,
-  workbenchActiveTraceRestGapFillRepeatMs: 5_000
+  workbenchActiveTraceSyncReplayInitialMs: 2_500,
+  workbenchActiveTraceSyncReplayRepeatMs: 5_000
 });
 
 export function workbenchRuntimePolicy(input: unknown = runtimePolicyConfig()): WorkbenchRuntimePolicy {
@@ -91,12 +91,12 @@ export function workbenchRuntimePolicy(input: unknown = runtimePolicyConfig()):
     sessionListRealtimeRefreshDelayMs: nonNegativeNumber(source.sessionListRealtimeRefreshDelayMs, DEFAULT_WORKBENCH_RUNTIME_POLICY.sessionListRealtimeRefreshDelayMs),
     sessionListTerminalRefreshDelayMs: nonNegativeNumber(source.sessionListTerminalRefreshDelayMs, DEFAULT_WORKBENCH_RUNTIME_POLICY.sessionListTerminalRefreshDelayMs),
     sessionListMinRefreshIntervalMs: nonNegativeNumber(source.sessionListMinRefreshIntervalMs, DEFAULT_WORKBENCH_RUNTIME_POLICY.sessionListMinRefreshIntervalMs),
-    workbenchRealtimeErrorGapFillMinMs: nonNegativeNumber(source.workbenchRealtimeErrorGapFillMinMs, DEFAULT_WORKBENCH_RUNTIME_POLICY.workbenchRealtimeErrorGapFillMinMs),
+    workbenchRealtimeErrorSyncReplayMinMs: nonNegativeNumber(source.workbenchRealtimeErrorSyncReplayMinMs ?? source.workbenchRealtimeErrorGapFillMinMs, DEFAULT_WORKBENCH_RUNTIME_POLICY.workbenchRealtimeErrorSyncReplayMinMs),
     workbenchRealtimeFlushMaxItemsPerChunk: positiveInteger(source.workbenchRealtimeFlushMaxItemsPerChunk, DEFAULT_WORKBENCH_RUNTIME_POLICY.workbenchRealtimeFlushMaxItemsPerChunk),
     workbenchRealtimeFlushMaxChunkMs: nonNegativeNumber(source.workbenchRealtimeFlushMaxChunkMs, DEFAULT_WORKBENCH_RUNTIME_POLICY.workbenchRealtimeFlushMaxChunkMs),
     workbenchRealtimeFlushYieldMs: nonNegativeNumber(source.workbenchRealtimeFlushYieldMs, DEFAULT_WORKBENCH_RUNTIME_POLICY.workbenchRealtimeFlushYieldMs),
-    workbenchActiveTraceRestGapFillInitialMs: nonNegativeNumber(source.workbenchActiveTraceRestGapFillInitialMs, DEFAULT_WORKBENCH_RUNTIME_POLICY.workbenchActiveTraceRestGapFillInitialMs),
-    workbenchActiveTraceRestGapFillRepeatMs: nonNegativeNumber(source.workbenchActiveTraceRestGapFillRepeatMs, DEFAULT_WORKBENCH_RUNTIME_POLICY.workbenchActiveTraceRestGapFillRepeatMs)
+    workbenchActiveTraceSyncReplayInitialMs: nonNegativeNumber(source.workbenchActiveTraceSyncReplayInitialMs ?? source.workbenchActiveTraceRestGapFillInitialMs, DEFAULT_WORKBENCH_RUNTIME_POLICY.workbenchActiveTraceSyncReplayInitialMs),
+    workbenchActiveTraceSyncReplayRepeatMs: nonNegativeNumber(source.workbenchActiveTraceSyncReplayRepeatMs ?? source.workbenchActiveTraceRestGapFillRepeatMs, DEFAULT_WORKBENCH_RUNTIME_POLICY.workbenchActiveTraceSyncReplayRepeatMs)
   };
 }
 

web/hwlab-cloud-web/src/stores/workbench-message-projection-runtime.ts

@@ -1,7 +1,7 @@
 // SPEC: PJ2026-0106050514 Workbench实时运行面 draft-2026-06-30-p0-1297-spec-first; PJ2026-0104010803 Workbench唯一投影 draft-2026-06-18-p0-unique-projection.
 // Responsibility: Pure Workbench trace/message/projection merge helpers consumed by the store orchestration layer.
 
-import { mergeRunnerTrace, type TraceSnapshot } from "@/composables/useTraceSubscription";
+import { mergeRunnerTrace, type TraceSnapshot } from "@/composables/workbench-trace-snapshot";
 import type { AgentChatResultResponse, AgentRunProvenance, ApiResult, ChatMessage, ProjectionDiagnostic, TraceEvent, WorkbenchTurnTimingProjection } from "@/types";
 import { firstNonEmptyString } from "@/utils";
 import { normalizeErrorDiagnostic, normalizeProjectionDiagnostic } from "@/utils/workbench-error-runtime";

web/hwlab-cloud-web/src/stores/workbench.ts

@@ -10,7 +10,7 @@ import { createWorkbenchHealthProbeCache } from "@/utils/workbench-health";
 import { agentErrorFromProjection, normalizeApiErrorRecord, normalizeErrorDiagnostic, normalizeProjectionDiagnostic, projectionDiagnosticFromApiFailure, projectionDiagnosticFromFailure } from "@/utils/workbench-error-runtime";
 import { readWorkbenchJson, readWorkbenchNumber, readWorkbenchString, removeWorkbenchStorageKey, writeWorkbenchJson, writeWorkbenchString } from "@/utils/workbench-storage-runtime";
 import { createWorkbenchStreamTransportRuntime, type WorkbenchRealtimeEvent, type WorkbenchStreamTransportRecovery } from "@/utils/workbench-realtime-runtime";
-import { mergeRunnerTrace, snapshotToRunnerTrace, type TraceSnapshot } from "@/composables/useTraceSubscription";
+import { mergeRunnerTrace, snapshotToRunnerTrace, type TraceSnapshot } from "@/composables/workbench-trace-snapshot";
 import type { WorkbenchMessagePageResponse, WorkbenchSessionDetailResponse } from "@/api/workbench";
 import type { AgentChatResponse, AgentChatResultResponse, AgentRunProvenance, ApiError, ApiResult, ChatMessage, ErrorDiagnostic, LiveSurface, ProjectionBlocker, ProjectionDiagnostic, ProviderProfile, TraceEvent, WorkbenchSessionRecord, WorkbenchTurnTimingProjection } from "@/types";
 import { firstNonEmptyString, nextProtocolId, normalizeWorkbenchSessionId, normalizeWorkbenchSessionRouteId } from "@/utils";
@@ -996,7 +996,7 @@ export const useWorkbenchStore = defineStore("workbench", () => {
     const events = Array.isArray(result.events) ? result.events : Array.isArray(result.traceEvents) ? result.traceEvents : [];
     const activityLabel = firstNonEmptyString(result.lastEventLabel, result.status);
     if (ownerSessionId === activeSessionId.value && (events.length > 0 || turnResultIsTerminalForMerge(result))) recordActivity(`trace:${activityLabel ?? "hydrated"}`);
-    markWorkbenchTraceEventsReceived({ traceId, events, transport: "rest_gap" });
+    markWorkbenchTraceEventsReceived({ traceId, events, transport: "detail_history" });
     if (turnResultIsTerminalForMerge(result)) {
       const terminalSeal = terminalSealResultWithoutTraceEvents(result);
       rememberTurnStatus(traceId, terminalSeal);
@@ -1097,7 +1097,7 @@ export const useWorkbenchStore = defineStore("workbench", () => {
   }
 
   function reattachTrace(traceId: string): void {
-    const initial: AgentChatResponse = { status: "running", traceId, turnUrl: `/v1/workbench/turns/${encodeURIComponent(traceId)}` };
+    const initial: AgentChatResponse = { status: "running", traceId };
     if (!messages.value.some((message) => message.traceId === traceId)) appendActiveMessages(makeMessage("agent", "", "running", { traceId, sessionId: selectedSessionId.value ?? undefined, threadId: selectedThreadId.value ?? undefined, title: "Code Agent", traceAutoLifecycle: "running" }));
     currentRequest.value = { traceId, sessionId: selectedSessionId.value ?? null, threadId: selectedThreadId.value ?? null, status: initial.status };
     scheduleActiveTraceSyncReplay(traceId, "reattach-sync-replay");
@@ -1111,7 +1111,7 @@ export const useWorkbenchStore = defineStore("workbench", () => {
     realtimeTransport.restart({
       sessionId,
       traceId,
-      errorRecoveryMinMs: runtimePolicy.workbenchRealtimeErrorGapFillMinMs,
+      errorRecoveryMinMs: runtimePolicy.workbenchRealtimeErrorSyncReplayMinMs,
       flushMaxItemsPerChunk: runtimePolicy.workbenchRealtimeFlushMaxItemsPerChunk,
       flushMaxChunkMs: runtimePolicy.workbenchRealtimeFlushMaxChunkMs,
       flushYieldMs: runtimePolicy.workbenchRealtimeFlushYieldMs,
@@ -1154,7 +1154,7 @@ export const useWorkbenchStore = defineStore("workbench", () => {
     recordWorkbenchRuntimeDiagnostic({ module: "workbench-sync-replay", sessionId, traceId, outcome: "ok", diagnostic: workbenchSyncReplayDiagnostic(result.data, events, { reason, sinceOutboxSeq }) });
   }
 
-  function scheduleActiveTraceSyncReplay(traceId: string | null | undefined, reason: string, delayMs = runtimePolicy.workbenchActiveTraceRestGapFillInitialMs): void {
+  function scheduleActiveTraceSyncReplay(traceId: string | null | undefined, reason: string, delayMs = runtimePolicy.workbenchActiveTraceSyncReplayInitialMs): void {
     const id = firstNonEmptyString(traceId);
     if (!id) return;
     if (typeof window === "undefined") {
@@ -1192,7 +1192,7 @@ export const useWorkbenchStore = defineStore("workbench", () => {
       return;
     }
     const stillActive = currentRequest.value?.traceId === id || isTraceActiveStatus(turn?.status) || isTraceActiveStatus(message?.status);
-    if (stillActive) scheduleActiveTraceSyncReplay(id, "active-sync-replay:repeat", runtimePolicy.workbenchActiveTraceRestGapFillRepeatMs);
+    if (stillActive) scheduleActiveTraceSyncReplay(id, "active-sync-replay:repeat", runtimePolicy.workbenchActiveTraceSyncReplayRepeatMs);
   }
 
   function stopRealtime(): void {

web/hwlab-cloud-web/src/types/global.d.ts

@@ -37,8 +37,14 @@ declare global {
           sessionListRealtimeRefreshDelayMs?: number;
           sessionListTerminalRefreshDelayMs?: number;
           sessionListMinRefreshIntervalMs?: number;
+          workbenchRealtimeErrorSyncReplayMinMs?: number;
+          workbenchActiveTraceSyncReplayInitialMs?: number;
+          workbenchActiveTraceSyncReplayRepeatMs?: number;
+          /** @deprecated Use workbenchRealtimeErrorSyncReplayMinMs. */
           workbenchRealtimeErrorGapFillMinMs?: number;
+          /** @deprecated Use workbenchActiveTraceSyncReplayInitialMs. */
           workbenchActiveTraceRestGapFillInitialMs?: number;
+          /** @deprecated Use workbenchActiveTraceSyncReplayRepeatMs. */
           workbenchActiveTraceRestGapFillRepeatMs?: number;
         };
       };

web/hwlab-cloud-web/src/utils/workbench-performance.ts

@@ -83,7 +83,7 @@ interface WorkbenchPerformanceEvent {
 interface TraceEventTimingInput {
   traceId: string | null | undefined;
   events: TraceEvent[];
-  transport: "sse" | "rest_gap" | "poll";
+  transport: "sse" | "sync_replay" | "detail_history" | "poll";
   serverSentAt?: string | null | undefined;
   eventCreatedAt?: string | null | undefined;
   traceSeq?: number | string | null | undefined;
@@ -771,7 +771,8 @@ function normalizeBackend(value: unknown): string {
 
 function normalizeTransport(value: unknown): string {
   const text = safeText(value).toLowerCase();
-  return text === "rest_gap" || text === "poll" || text === "sse" ? text : "unknown";
+  if (text === "rest_gap") return "detail_history";
+  return text === "detail_history" || text === "sync_replay" || text === "poll" || text === "sse" ? text : "unknown";
 }
 
 function normalizeTargetState(value: unknown): string {

web/hwlab-cloud-web/src/views/PerformanceView.vue

@@ -392,7 +392,7 @@ function outcomeLabel(value?: string): string {
 }
 
 function transportLabel(value?: string): string {
-  const labels: Record<string, string> = { sse: "实时流", rest_gap: "REST 补洞", poll: "轮询", none: "无", unknown: "未知" };
+  const labels: Record<string, string> = { sse: "实时流", sync_replay: "同步回放", detail_history: "明细/历史", poll: "轮询", none: "无", unknown: "未知" };
   return labels[String(value ?? "unknown")] ?? String(value);
 }