diff --git a/internal/cloud/server-workbench-http.test.ts b/internal/cloud/server-workbench-http.test.ts
index e0ebb998..bb3a6784 100644
--- a/internal/cloud/server-workbench-http.test.ts
+++ b/internal/cloud/server-workbench-http.test.ts
@@ -456,6 +456,85 @@ test("workbench read model projects completed current turn for idle session summ
   }
 });
 
+test("workbench read model lets terminal result override stale running session state", async () => {
+  const traceStore = createCodeAgentTraceStore();
+  const results = createCodeAgentChatResultStore();
+  const traceId = "trc_workbench_stale_running_result_completed";
+  const finalText = "OK";
+  const session = {
+    id: "ses_workbench_stale_running_result_completed",
+    projectId: "prj_hwpod_workbench",
+    agentId: "hwlab-code-agent",
+    status: "running",
+    ownerUserId: ACTOR.id,
+    conversationId: "cnv_workbench_stale_running_result_completed",
+    threadId: "thread-workbench-stale-running-result-completed",
+    lastTraceId: traceId,
+    updatedAt: "2026-06-18T16:31:04.000Z",
+    session: {
+      sessionStatus: "running",
+      lastTraceId: traceId,
+      messages: [
+        { role: "user", text: "reply OK", traceId, status: "sent" },
+        { role: "agent", text: "", traceId, status: "running" }
+      ]
+    }
+  };
+  traceStore.append(traceId, { type: "backend", status: "running", label: "runner:created", terminal: false });
+  results.set(traceId, {
+    status: "completed",
+    traceId,
+    ownerUserId: ACTOR.id,
+    conversationId: session.conversationId,
+    sessionId: session.id,
+    threadId: session.threadId,
+    finalResponse: finalText,
+    agentRun: { runId: "run_workbench_stale_running_completed", commandId: "cmd_workbench_stale_running_completed", status: "completed" }
+  });
+  const accessController = {
+    store: {
+      async listAgentSessionsForUser() { return [session]; },
+      async getAgentSession(sessionId) { return sessionId === session.id ? session : null; },
+      async getAgentSessionByTraceId(requestTraceId) { return requestTraceId === traceId ? session : null; }
+    },
+    async ensureBootstrap() {},
+    async authenticate() { return { ok: true, actor: ACTOR, session: { id: "uss_workbench_reader" } }; }
+  };
+  const server = createCloudApiServer({ accessController, traceStore, codeAgentChatResults: results });
+  await new Promise((resolve) => server.listen(0, "127.0.0.1", resolve));
+
+  try {
+    const { port } = server.address();
+    const sessions = await getJson(port, `/v1/workbench/sessions?includeSessionId=${encodeURIComponent(session.id)}`);
+    assert.equal(sessions.status, 200);
+    assert.equal(sessions.body.sessions[0].status, "completed");
+    assert.equal(sessions.body.sessions[0].running, false);
+    assert.equal(sessions.body.sessions[0].terminal, true);
+    assert.equal(sessions.body.sessions[0].turnSummary.status, "completed");
+
+    const detail = await getJson(port, `/v1/workbench/sessions/${encodeURIComponent(session.id)}`);
+    assert.equal(detail.status, 200);
+    assert.equal(detail.body.session.status, "completed");
+    assert.equal(detail.body.session.running, false);
+    assert.equal(detail.body.session.terminal, true);
+
+    const messages = await getJson(port, `/v1/workbench/sessions/${encodeURIComponent(session.id)}/messages?limit=10`);
+    assert.equal(messages.status, 200);
+    assert.equal(messages.body.messages[1].status, "completed");
+    assert.equal(messages.body.messages[1].text, finalText);
+
+    const turn = await getJson(port, `/v1/workbench/turns/${encodeURIComponent(traceId)}`);
+    assert.equal(turn.status, 200);
+    assert.equal(turn.body.status, "completed");
+    assert.equal(turn.body.turn.status, "completed");
+    assert.equal(turn.body.turn.running, false);
+    assert.equal(turn.body.turn.terminal, true);
+    assert.equal(turn.body.turn.assistantText, finalText);
+  } finally {
+    await new Promise((resolve, reject) => server.close((error) => error ? reject(error) : resolve()));
+  }
+});
+
 test("workbench realtime stream accepts session authority without project or workspace", async () => {
   const traceStore = createCodeAgentTraceStore();
   const results = createCodeAgentChatResultStore();
diff --git a/internal/cloud/server-workbench-http.ts b/internal/cloud/server-workbench-http.ts
index 14ccee13..a129dce8 100644
--- a/internal/cloud/server-workbench-http.ts
+++ b/internal/cloud/server-workbench-http.ts
@@ -277,7 +277,7 @@ async function handleWorkbenchTurnSnapshot(response, url, options, actor, rawTur
   }
   const resultVisible = result && (session || actor.role === "admin" || Boolean(result.ownerUserId));
   const trace = await readModel.traceSnapshot(traceId);
-  const status = workbenchTurnProjectionStatus(trace);
+  const status = workbenchTurnStatusFromFacts({ trace, result });
   const found = Boolean(resultVisible || session);
   if (!found) return sendJson(response, 404, workbenchError("workbench_turn_not_found", "Workbench turn is not visible to the current actor.", { turnId, traceId }));
   const projection = readModel.projectionDiagnostics({ traceId, result, trace });
@@ -629,7 +629,7 @@ async function visibleTraceContext(options, actor, traceId) {
   const resultVisible = result && (session || actor.role === "admin" || Boolean(result.ownerUserId));
   if (!resultVisible && !session) return { visible: false };
   const trace = await readModel.traceSnapshot(traceId);
-  const status = workbenchTurnProjectionStatus(trace);
+  const status = workbenchTurnStatusFromFacts({ trace, result });
   return { visible: true, turnId: traceId, traceId, status, result, session, trace };
 }
 
@@ -666,7 +666,8 @@ function currentWorkbenchTurnProjection(session, options = {}) {
   const traceId = safeTraceId(session?.lastTraceId) ?? null;
   if (!traceId) return null;
   const trace = options.trace?.traceId === traceId ? options.trace : traceSnapshotSync(options, traceId);
-  const status = workbenchTurnProjectionStatus(trace);
+  const result = traceScopedResult(options, traceId);
+  const status = workbenchTurnStatusFromFacts({ trace, result });
   return {
     turnId: traceId,
     traceId,
@@ -677,6 +678,20 @@ function currentWorkbenchTurnProjection(session, options = {}) {
   };
 }
 
+function traceScopedResult(options, traceId) {
+  const result = options.result?.traceId === traceId || (!options.result?.traceId && options.result) ? options.result : options.codeAgentChatResults?.get?.(traceId) ?? null;
+  return result && typeof result === "object" ? result : null;
+}
+
+function workbenchTurnStatusFromFacts({ trace = null, result = null } = {}) {
+  const resultStatus = normalizeStatus(result?.status ?? result?.terminalStatus);
+  if (TERMINAL_STATUSES.has(resultStatus) && !RUNNING_STATUSES.has(resultStatus)) return resultStatus;
+  const traceStatus = workbenchTurnProjectionStatus(trace);
+  if (traceStatus !== "unknown") return traceStatus;
+  if (RUNNING_STATUSES.has(resultStatus)) return resultStatus;
+  return "unknown";
+}
+
 function workbenchTurnProjectionStatus(trace) {
   const status = normalizeStatus(trace?.status);
   if (status === "missing") return "unknown";