fix(workbench): preserve message lifecycle on reload

internal/cloud/access-control.test.ts

@@ -1544,6 +1544,8 @@ test("access controller preserves user message when owner evidence updates with
   const conversationId = "cnv_issue853_owner_merge";
   const sessionId = "ses_issue853_owner_merge";
   const traceId = "trc_issue853_owner_merge";
+  const userMessageId = "msg_issue853_owner_merge_user";
+  const assistantMessageId = "msg_issue853_owner_merge_agent";
   const threadId = "thread-issue-853-owner-merge";
   const nowValue = "2026-06-04T10:45:00.000Z";
   const userText = "请执行 hwpod inspect，并在最终回复里原样包含 HWLAB-853-FINAL-owner-merge";
@@ -1563,8 +1565,8 @@ test("access controller preserves user message when owner evidence updates with
       sessionStatus: "running",
       lastTraceId: traceId,
       messages: [
-        { id: "msg_issue853_owner_user", role: "user", title: "用户", text: userText, status: "sent", traceId, conversationId, sessionId, threadId, createdAt: nowValue },
-        { id: "msg_issue853_owner_agent_pending", role: "agent", title: "Code Agent 处理中", text: "Code Agent 仍在处理，可以继续 steer 或等待 trace 完成。", status: "running", traceId, conversationId, sessionId, threadId, createdAt: nowValue }
+        { id: userMessageId, messageId: userMessageId, role: "user", title: "用户", text: userText, status: "sent", traceId, turnId: traceId, conversationId, sessionId, threadId, createdAt: nowValue },
+        { id: assistantMessageId, messageId: assistantMessageId, role: "agent", title: "Code Agent 处理中", text: "Code Agent 仍在处理，可以继续 steer 或等待 trace 完成。", status: "running", traceId, turnId: traceId, conversationId, sessionId, threadId, createdAt: nowValue }
       ],
       messageCount: 2,
       firstUserMessagePreview: userText,
@@ -1587,7 +1589,7 @@ test("access controller preserves user message when owner evidence updates with
       status: "failed",
       sessionStatus: "failed",
       messages: [
-        { id: "msg_issue853_owner_agent_result", role: "agent", title: "Code Agent result", text: "HyueAPI 403 INSUFFICIENT_BALANCE", status: "failed", traceId, conversationId, sessionId, threadId, createdAt: nowValue }
+        { id: assistantMessageId, messageId: assistantMessageId, role: "agent", title: "Code Agent result", text: "HyueAPI 403 INSUFFICIENT_BALANCE", status: "failed", traceId, turnId: traceId, conversationId, sessionId, threadId, createdAt: nowValue }
       ],
       messageCount: 1,
       firstUserMessagePreview: userText,
@@ -1604,6 +1606,14 @@ test("access controller preserves user message when owner evidence updates with
   assert.equal(conversation.messages[0].text, userText);
   assert.equal(session.session.messages[0].traceId, traceId);
   assert.equal(conversation.messages[0].traceId, traceId);
+  assert.equal(session.session.messages[0].messageId, userMessageId);
+  assert.equal(session.session.messages[0].turnId, traceId);
+  assert.equal(conversation.messages[0].messageId, userMessageId);
+  assert.equal(conversation.messages[0].turnId, traceId);
+  assert.equal(session.session.messages[1].messageId, assistantMessageId);
+  assert.equal(session.session.messages[1].turnId, traceId);
+  assert.equal(conversation.messages[1].messageId, assistantMessageId);
+  assert.equal(conversation.messages[1].turnId, traceId);
   assert.equal(session.session.messages[1].text, "HyueAPI 403 INSUFFICIENT_BALANCE");
   assert.equal(conversation.messages[1].status, "failed");
   assert.equal(session.session.messageCount, 2);

internal/cloud/access-control.ts

@@ -2549,13 +2549,16 @@ function mergeTerminalConversationMessages(existingMessages = [], result = {}, c
   }).filter(Boolean);
   let addedAgentMessage = false;
   if (traceId && !next.some((message) => message.traceId === traceId && message.role === "agent")) {
+    const messageId = result.reply?.messageId ?? result.messageId ?? `msg_${traceId.slice(4)}_agent`;
     next.push(redactConversationMessage({
-      id: result.reply?.messageId ?? result.messageId ?? `msg_${traceId.slice(4)}`,
+      id: messageId,
+      messageId,
       role: "agent",
       title: "Code Agent result",
       text: assistantText,
       status: terminalStatus,
       traceId,
+      turnId: traceId,
       conversationId: context.conversationId,
       sessionId: context.sessionId,
       threadId: context.threadId,
@@ -2577,13 +2580,16 @@ function ensureTerminalUserMessage(messages = [], context = {}) {
   const userText = conversationText(context.firstUserPreview, 12000);
   if (!userText) return messages;
   const traceId = safeTraceIdLocal(context.traceId);
+  const messageId = traceId ? `msg_${traceId.slice(4)}_user` : `msg_terminal_user_${messages.length}`;
   const userMessage = redactConversationMessage({
-    id: traceId ? `msg_${traceId.slice(4)}_user` : `msg_terminal_user_${messages.length}`,
+    id: messageId,
+    messageId,
     role: "user",
     title: "用户",
     text: userText,
     status: "sent",
     traceId,
+    turnId: traceId,
     conversationId: context.conversationId,
     sessionId: context.sessionId,
     threadId: context.threadId,
@@ -2617,11 +2623,13 @@ function redactConversationMessage(message) {
   const text = conversationText(message.text ?? message.content ?? message.message, 12000);
   return pruneEmpty({
     id: textOr(message.id, ""),
+    messageId: textOr(message.messageId ?? message.id, ""),
     role: textOr(message.role, ""),
     title: textOr(message.title, ""),
     text,
     status: textOr(message.status, ""),
     traceId: textOr(message.traceId, ""),
+    turnId: textOr(message.turnId ?? message.traceId, ""),
     conversationId: textOr(message.conversationId, ""),
     sessionId: textOr(message.sessionId, ""),
     threadId: textOr(message.threadId, ""),