diff --git a/web/hwlab-cloud-web/src/App.tsx b/web/hwlab-cloud-web/src/App.tsx
index f0e1c3e3..3a7583a2 100644
--- a/web/hwlab-cloud-web/src/App.tsx
+++ b/web/hwlab-cloud-web/src/App.tsx
@@ -107,7 +107,7 @@ export function App(): ReactElement {
         onKeyDown={sessionResize.onKeyDown}
       />
       <section className="center-workspace">
-        {route === "workspace" ? <ConversationPanel messages={store.state.messages} availability={store.state.codeAgentAvailability} live={store.state.live} chatPending={store.state.chatPending} onCopySession={() => void navigator.clipboard?.writeText(store.activeConversationId ?? "")} onCancelMessage={(id) => void store.cancelAgentMessage(id)} onRetryMessage={(id) => void store.retryAgentMessage(id)} onReplayTrace={(id) => void store.replayAgentTrace(id)} /> : null}
+        {route === "workspace" ? <ConversationPanel messages={store.state.messages} availability={store.state.codeAgentAvailability} live={store.state.live} chatPending={store.state.chatPending} codeAgentTimeoutMs={store.state.codeAgentTimeoutMs} onCopySession={() => void navigator.clipboard?.writeText(store.activeConversationId ?? "")} onCancelMessage={(id) => void store.cancelAgentMessage(id)} onRetryMessage={(id) => void store.retryAgentMessage(id)} onReplayTrace={(id) => void store.replayAgentTrace(id)} /> : null}
         {route === "skills" ? <SkillsView /> : null}
         {route === "gate" ? <GateView /> : null}
         {route === "help" ? <HelpView help={help} /> : null}
diff --git a/web/hwlab-cloud-web/src/components/conversation/ConversationPanel.tsx b/web/hwlab-cloud-web/src/components/conversation/ConversationPanel.tsx
index 3231241e..22d433e3 100644
--- a/web/hwlab-cloud-web/src/components/conversation/ConversationPanel.tsx
+++ b/web/hwlab-cloud-web/src/components/conversation/ConversationPanel.tsx
@@ -8,6 +8,9 @@ import { codeAgentSummaryRows, classifyCodeAgentStatusSummary } from "../../stat
 import { StateTag } from "../shared/StateTag";
 import { MessageTracePanel } from "./MessageTracePanel";
 import { MessageActions } from "./MessageActions";
+import { MessagePendingContext } from "./MessagePendingContext";
+import { MessageRuntimePath } from "./MessageRuntimePath";
+import { MessageSessionContinuity } from "./MessageSessionContinuity";
 
 interface ConversationPanelProps {
   messages: ChatMessage[];
@@ -20,7 +23,7 @@ interface ConversationPanelProps {
   onReplayTrace(messageId: string): void;
 }
 
-export function ConversationPanel({ messages, availability, live, chatPending, onCopySession, onCancelMessage, onRetryMessage, onReplayTrace }: ConversationPanelProps): ReactElement {
+export function ConversationPanel({ messages, availability, live, chatPending, codeAgentTimeoutMs, onCopySession, onCancelMessage, onRetryMessage, onReplayTrace }: ConversationPanelProps & { codeAgentTimeoutMs: number }): ReactElement {
   const intro = useMemo<ChatMessage[]>(() => [
     {
       id: "intro-mode",
@@ -56,7 +59,7 @@ export function ConversationPanel({ messages, availability, live, chatPending, o
           </div>
           <CodeAgentSummary availability={availability} live={live} latestMessage={latestAgentMessage(messages)} />
           <div className="conversation-list" id="conversation-list" aria-live="polite">
-            {[...intro, ...messages].map((message) => <MessageCard key={message.id} message={message} onCancel={() => onCancelMessage(message.id)} onRetry={() => onRetryMessage(message.id)} onReplayTrace={() => onReplayTrace(message.id)} />)}
+            {[...intro, ...messages].map((message) => <MessageCard key={message.id} message={message} codeAgentTimeoutMs={codeAgentTimeoutMs} onCancel={() => onCancelMessage(message.id)} onRetry={() => onRetryMessage(message.id)} onReplayTrace={() => onReplayTrace(message.id)} />)}
           </div>
         </div>
       </div>
@@ -98,7 +101,7 @@ function CodeAgentSummary({ availability, live, latestMessage }: { availability:
   );
 }
 
-function MessageCard({ message, onCancel, onRetry, onReplayTrace }: { message: ChatMessage; onCancel(): void; onRetry(): void; onReplayTrace(): void }): ReactElement {
+function MessageCard({ message, codeAgentTimeoutMs, onCancel, onRetry, onReplayTrace }: { message: ChatMessage; codeAgentTimeoutMs: number; onCancel(): void; onRetry(): void; onReplayTrace(): void }): ReactElement {
   const html = renderMessageMarkdown(message.text);
   const traceKey = `hwlab.workbench.trace-open.${message.traceId ?? message.id}`;
   return (
@@ -111,6 +114,9 @@ function MessageCard({ message, onCancel, onRetry, onReplayTrace }: { message: C
         <StateTag tone={toneClass(message.status)}>{statusLabel(message.status)}</StateTag>
       </header>
       <div className="message-body" dangerouslySetInnerHTML={{ __html: html }} />
+      {message.role === "agent" && message.status === "running" ? <MessagePendingContext message={message} codeAgentTimeoutMs={codeAgentTimeoutMs} /> : null}
+      {message.role === "agent" && message.status !== "running" ? <MessageSessionContinuity message={message} /> : null}
+      {message.role === "agent" ? <MessageRuntimePath message={message} /> : null}
       <footer className="message-meta">
         <span>trace {shortToken(message.traceId, 10)}</span>
         <span>session {shortToken(message.sessionId, 10)}</span>
diff --git a/web/hwlab-cloud-web/src/components/conversation/MessagePendingContext.tsx b/web/hwlab-cloud-web/src/components/conversation/MessagePendingContext.tsx
new file mode 100644
index 00000000..d3fd84c6
--- /dev/null
+++ b/web/hwlab-cloud-web/src/components/conversation/MessagePendingContext.tsx
@@ -0,0 +1,43 @@
+import type { ReactElement } from "react";
+
+import type { ChatMessage } from "../../types/domain";
+import { formatBeijingTime, formatDuration, shortToken, toneClass } from "../../utils";
+
+interface MessagePendingContextProps {
+  message: ChatMessage;
+  codeAgentTimeoutMs: number;
+}
+
+export function MessagePendingContext({ message, codeAgentTimeoutMs }: MessagePendingContextProps): ReactElement | null {
+  if (message.status !== "running") return null;
+  const fields: Array<[string, string | null | undefined, boolean]> = [
+    ["状态", "处理中", false],
+    ["traceId", typeof message.traceId === "string" ? message.traceId : null, true],
+    ["conversation", typeof message.conversationId === "string" ? message.conversationId : null, true],
+    ["session", message.sessionId ?? message.runnerTrace?.sessionId ?? "等待后端分配", true],
+    ["thread", message.threadId ?? message.runnerTrace?.threadId ?? "等待后端分配", false],
+    ["sessionStatus", typeof message.runnerTrace?.sessionStatus === "string" ? message.runnerTrace.sessionStatus : null, false],
+    ["lifecycle", typeof message.runnerTrace?.sessionLifecycleStatus === "string" ? message.runnerTrace.sessionLifecycleStatus : null, false],
+    ["activityTimeout", `${formatDuration(codeAgentTimeoutMs)} 无新事件`, false]
+  ];
+  return (
+    <section className="message-pending-context tone-border-pending" data-message-pending-context>
+      <div className="message-pending-head">
+        <span className={`state-tag tone-${toneClass("pending")}`} data-pending-tag>处理中</span>
+        <span className="message-pending-summary">{message.runnerTrace?.waitingFor ? `等待 ${message.runnerTrace.waitingFor}` : "等待后端事件"}</span>
+      </div>
+      <div className="message-pending-grid" role="list">
+        {fields.map(([label, value, copyable]) => {
+          if (value === undefined || value === null || value === "") return null;
+          return (
+            <div key={label} className="message-pending-row" role="listitem">
+              <span className="message-pending-key">{label}</span>
+              <span className="message-pending-value mono">{copyable ? shortToken(value, 32) : value}</span>
+              <span className="message-pending-time">{formatBeijingTime(message.updatedAt ?? message.createdAt, { withSeconds: true })}</span>
+            </div>
+          );
+        })}
+      </div>
+    </section>
+  );
+}
diff --git a/web/hwlab-cloud-web/src/components/conversation/MessageRuntimePath.tsx b/web/hwlab-cloud-web/src/components/conversation/MessageRuntimePath.tsx
new file mode 100644
index 00000000..b98375f9
--- /dev/null
+++ b/web/hwlab-cloud-web/src/components/conversation/MessageRuntimePath.tsx
@@ -0,0 +1,37 @@
+import type { ReactElement } from "react";
+
+import type { ChatMessage } from "../../types/domain";
+import { codeAgentRuntimePathFromMessage } from "../../state/code-agent-status";
+import { toneClass } from "../../utils";
+
+interface MessageRuntimePathProps {
+  message: ChatMessage;
+}
+
+export function MessageRuntimePath({ message }: MessageRuntimePathProps): ReactElement | null {
+  if (message.role !== "agent") return null;
+  const runtimePath = codeAgentRuntimePathFromMessage(message as unknown as Record<string, unknown>);
+  if (!runtimePath) return null;
+  return (
+    <details className={`message-runtime-path tone-border-${toneClass(runtimePath.tone)}`} data-message-runtime-path>
+      <summary>
+        <span className={`state-tag tone-${toneClass(runtimePath.tone)}`} data-runtime-path-tag>{runtimePath.label}</span>
+        <span className="message-runtime-summary">{runtimePath.summary}</span>
+      </summary>
+      <div className="message-runtime-grid" role="list">
+        {runtimePath.rows.map((row) => (
+          <div key={row.label} className={`message-runtime-row${row.value === "未观测" || row.value === "字段缺失：证据不足" ? " message-runtime-row-missing" : ""}`} role="listitem">
+            <span className="message-runtime-key">{row.label}</span>
+            <span className="message-runtime-value mono">{row.value}</span>
+          </div>
+        ))}
+        {runtimePath.missingFields.length > 0 ? (
+          <div className="message-runtime-row message-runtime-row-missing message-runtime-row-wide" role="listitem">
+            <span className="message-runtime-key">缺失字段</span>
+            <span className="message-runtime-value mono">{runtimePath.missingFields.join(", ")}</span>
+          </div>
+        ) : null}
+      </div>
+    </details>
+  );
+}
diff --git a/web/hwlab-cloud-web/src/components/conversation/MessageSessionContinuity.tsx b/web/hwlab-cloud-web/src/components/conversation/MessageSessionContinuity.tsx
new file mode 100644
index 00000000..0001e1ae
--- /dev/null
+++ b/web/hwlab-cloud-web/src/components/conversation/MessageSessionContinuity.tsx
@@ -0,0 +1,59 @@
+import type { ReactElement } from "react";
+
+import type { ChatMessage } from "../../types/domain";
+import { nonEmptyString } from "../../utils";
+import { formatBeijingTime, shortToken, toneClass } from "../../utils";
+
+interface MessageSessionContinuityProps {
+  message: ChatMessage;
+}
+
+interface ContinuityField {
+  label: string;
+  value: string | null;
+  copyable: boolean;
+}
+
+export function MessageSessionContinuity({ message }: MessageSessionContinuityProps): ReactElement | null {
+  if (message.role !== "agent" || message.status === "running") return null;
+  const sessionLifecycle = pickString(message.runnerTrace?.sessionLifecycleStatus);
+  const hint = pickString(message.runnerTrace?.sessionLifecycleHint);
+  const lastEventLabel = pickString(message.runnerTrace?.lastEventLabel);
+  const fields: ContinuityField[] = [
+    { label: "状态", value: statusLabel(message.status), copyable: false },
+    { label: "conversation", value: message.conversationId ?? "未确认", copyable: true },
+    { label: "session", value: message.sessionId ?? "未确认", copyable: true },
+    { label: "thread", value: message.threadId ?? "未确认", copyable: true },
+    { label: "lifecycle", value: sessionLifecycle, copyable: false },
+    { label: "提示", value: hint, copyable: false },
+    { label: "traceId", value: message.traceId ?? "未确认", copyable: true },
+    { label: "lastEvent", value: lastEventLabel, copyable: false }
+  ].filter((field): field is ContinuityField => Boolean(field.value && field.value !== "未确认"));
+  if (fields.length === 0) return null;
+  return (
+    <details className={`message-session-context tone-border-${toneClass(message.status)}`} data-message-session-continuity>
+      <summary>
+        <span className={`state-tag tone-${toneClass(message.status)}`} data-session-continuity-tag>会话 {statusLabel(message.status)}</span>
+        <span className="message-session-summary">{hint ?? lastEventLabel ?? "会话上下文已记录"}</span>
+      </summary>
+      <div className="message-session-grid" role="list">
+        {fields.map((field) => (
+          <div key={field.label} className="message-session-row" role="listitem">
+            <span className="message-session-key">{field.label}</span>
+            <span className="message-session-value mono">{field.copyable ? shortToken(field.value, 32) : field.value}</span>
+            <span className="message-session-time">{formatBeijingTime(message.updatedAt ?? message.createdAt, { withSeconds: true })}</span>
+          </div>
+        ))}
+      </div>
+    </details>
+  );
+}
+
+function statusLabel(status: string): string {
+  const map: Record<string, string> = { completed: "完成", failed: "失败", blocked: "阻塞", timeout: "超时", canceled: "已取消", source: "SOURCE" };
+  return map[status] ?? status ?? "未知";
+}
+function pickString(value: unknown): string | null {
+  return typeof value === "string" && value.trim() ? value.trim() : null;
+}
+
diff --git a/web/hwlab-cloud-web/src/styles/workbench.css b/web/hwlab-cloud-web/src/styles/workbench.css
index 9b395e11..72ba00cb 100644
--- a/web/hwlab-cloud-web/src/styles/workbench.css
+++ b/web/hwlab-cloud-web/src/styles/workbench.css
@@ -111,6 +111,18 @@ button:disabled { cursor: not-allowed; opacity: 0.55; }
 .message-action-retry { color: var(--accent); border-color: var(--accent); }
 .message-action-trace { color: var(--source); border-color: var(--source); }
 .message-action-status { color: var(--muted); font-size: 12px; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
+.message-pending-context { display: grid; gap: 6px; margin-top: 10px; padding: 8px 10px; border-radius: 6px; background: #fbfcf8; }
+.message-pending-head { display: flex; align-items: center; gap: 8px; }
+.message-pending-summary { color: var(--muted); font-size: 12px; }
+.message-pending-grid, .message-session-grid, .message-runtime-grid { display: grid; gap: 4px 12px; grid-template-columns: minmax(120px, max-content) 1fr; align-items: baseline; }
+.message-pending-row, .message-session-row, .message-runtime-row { display: contents; }
+.message-pending-key, .message-session-key, .message-runtime-key { color: var(--muted); font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; }
+.message-pending-value, .message-session-value, .message-runtime-value { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12px; overflow-wrap: anywhere; }
+.message-pending-time, .message-session-time { color: var(--muted); font-size: 12px; grid-column: 1 / -1; }
+.message-runtime-row-missing .message-runtime-value { color: var(--bad); }
+.message-runtime-row-wide { grid-column: 1 / -1; }
+.message-runtime-summary { color: var(--muted); font-size: 12px; }
+.message-session-summary { color: var(--muted); font-size: 12px; }
 .conversation-list { min-height: 0; display: grid; align-content: start; gap: 12px; overflow: auto; padding-right: 4px; }
 .message-card { border: 1px solid var(--line); border-radius: 8px; background: #fff; padding: 12px; }
 .message-head { display: flex; justify-content: space-between; gap: 10px; }