diff --git a/01_content/src/client/index.tsx b/01_content/src/client/index.tsx
index acda8da..5b33b77 100644
--- a/01_content/src/client/index.tsx
+++ b/01_content/src/client/index.tsx
@@ -455,7 +455,7 @@ function buildWindowTaskText(projectId: string, projectName: string, windowLabel
     '   - 视频 / 动画 → 生成 .mp4 / .gif（或 Lottie JSON）文件放进项目文件夹；',
     '   - 工作台已有内置窗能力（资源管理器 / 终端 / 浏览器 / 动画站）→ 不要重复造轮子，直接建议用户改用内置窗。',
     '5. 完成内容后，用一两句话说明用户把它放进窗口的步骤。该窗口位于「' + projectName + '」项目内，如需要也可协助该项目后续的其他自定义工作。',
-    '6. 完成后写入「产物清单」文件：在项目文件夹里创建 widget-result.json，内容示例 {\"window\":\"' + win + '\",\"path\":\"产物相对路径\",\"kind\":\"html\"}；kind 可选 html（本地页面，path 相对项目文件夹）/ url（外部链接，path 为完整 URL）/ file（其他文件，path 相对项目文件夹）。写完这个文件，工作台会自动把产物挂载进「' + win + '」窗口，用户无需手动操作。',
+    '6. 完成后写入「产物清单」文件：在项目文件夹里创建 widget-result.json，内容示例 {\"window\":\"' + win + '\",\"path\":\"产物相对路径\",\"kind\":\"html\"}；kind 可选 html（本地页面，path 相对项目文件夹）/ url（外部链接，path 为完整 URL）/ file（其他文件，path 相对项目文件夹）。写完这个文件，工作台会自动把产物挂载进「' + win + '」窗口，用户无需手动操作；挂载后该产物会作为「' + win + '」窗口的固定内容锁定保存，用户下次打开工作台时窗口直接显示它，不会丢失或重置。',
     KNOWLEDGE_PACK,
   ]
   return lines.join('\n')
@@ -1021,7 +1021,10 @@ function buildCustomLayoutPrompt(req: string): string {
       // 补挂：此前项目未打开时暂存的产物，现在自动挂进主行第一格
       const pending = pendingMountRef.current[spec.id]
       if (pending) {
-        try { splitStore.openTab('main', 0, pending) } catch {}
+        try {
+          if (pending.content && typeof pending.row === 'string') splitStore.lockPane(pending.row, pending.index ?? 0, pending.content)
+          else splitStore.openTab('main', 0, pending)
+        } catch {}
         delete pendingMountRef.current[spec.id]
         try { localStorage.setItem('dsh.worktable.pendingMount.v1', JSON.stringify(pendingMountRef.current)) } catch {}
       }
@@ -1114,12 +1117,14 @@ function buildCustomLayoutPrompt(req: string): string {
       const content = buildMountContent(folder, d)
       if (!content) return
       if (splitStore.active && splitStore.spec?.id === projectId) {
-        // 项目开着：直接挂进「窗口N」对应窗格（找不到就落主行第一格）
+        // 项目开着：锁死挂进「窗口N」对应窗格（清空原内容、唯一标签；找不到就落主行第一格）
         const pane = windowLabelToPane(splitStore.spec, d.window)
-        splitStore.openTab(pane?.row ?? 'main', pane?.index ?? 0, content)
+        splitStore.lockPane(pane?.row ?? 'main', pane?.index ?? 0, content)
       } else {
-        // 项目没开：暂存，打开项目时补挂
-        pendingMountRef.current[projectId] = content
+        // 项目没开：按项目已保存的 spec 解析目标窗格，暂存，打开项目时锁死补挂
+        const saved = projectsRef.current.projects.views[projectId] ?? projectsRef.current.projects.layouts.find((l) => l.id === projectId)
+        const pane = windowLabelToPane(saved, d.window)
+        pendingMountRef.current[projectId] = { content, row: pane?.row ?? 'main', index: pane?.index ?? 0 }
         try { localStorage.setItem('dsh.worktable.pendingMount.v1', JSON.stringify(pendingMountRef.current)) } catch {}
       }
     } catch { /* 无清单文件 = 不挂载 */ }
diff --git a/01_content/src/client/split.tsx b/01_content/src/client/split.tsx
index f55ad87..49e1860 100644
--- a/01_content/src/client/split.tsx
+++ b/01_content/src/client/split.tsx
@@ -105,6 +105,8 @@ type SplitState = {
   setTopW(i: number, w: number): void
   setPaneContent(row: PaneRow, i: number, content: SplitContent | null): void
   openTab(row: PaneRow, i: number, content: SplitContent): void
+  /** 锁定窗格：清空原有标签，把内容作为该窗唯一的固定标签（挂载产物的「锁死」语义） */
+  lockPane(row: PaneRow, i: number, content: SplitContent): void
   closeTab(row: PaneRow, i: number, tabId: string): void
   setActiveTab(row: PaneRow, i: number, tabId: string): void
   moveTab(fromRow: PaneRow, fromI: number, tabId: string, toRow: PaneRow, toI: number): void
@@ -586,6 +588,30 @@ export const splitStore: SplitState = {
     if (content) this.openTab(row, i, content)
   },
 
+  lockPane(row, i, content) {
+    const spec = this.spec
+    if (!spec) return
+    const tab: PaneTab = { id: 't' + Date.now().toString(36), title: tabTitleOf(content), content, active: 0 }
+    const mutate = (pane: SplitPane): SplitPane => ({ ...pane, content: null, tabs: [tab], active: 0 })
+    if (row === 'left') {
+      if (!spec.left || i !== 0) return
+      this.spec = { ...spec, left: mutate(spec.left) }
+    } else if (row === 'top') {
+      const top = [...(spec.top ?? [])]
+      if (!top[i]) return
+      top[i] = mutate(top[i])
+      this.spec = { ...spec, top }
+    } else {
+      const main = [...spec.main]
+      if (!main[i]) return
+      main[i] = mutate(main[i])
+      this.spec = { ...spec, main }
+    }
+    this.onSpecMutated?.(this.spec)
+    this.persist()
+    this.notify()
+  },
+
   openTab(row, i, content) {
     const spec = this.spec
     if (!spec) return
diff --git a/02_process/worklogs/2026-08-16_worktable-v2.md b/02_process/worklogs/2026-08-16_worktable-v2.md
index 915ef6b..3a0a1a6 100644
--- a/02_process/worklogs/2026-08-16_worktable-v2.md
+++ b/02_process/worklogs/2026-08-16_worktable-v2.md
@@ -1054,6 +1054,20 @@
   重开项目 mountedAfterReopen ✓；宿主重启后 functional-diag 全 20 STEP ERROR_COUNT: 0。
 - 备注：纯客户端改动，F5 即生效；夹具目录已清理。
 
+## 补记（挂载锁死：产物成为窗口固定内容）
+
+- 用户要求：用户已明确用 HTML 时，挂载完成后产物必须与该窗口「锁死」——下次进入工作台
+  窗口直接显示页面，不能丢失或重置。
+- 实现：splitStore 新增 lockPane(row,index,content)——清空该窗格原有标签、产物作为唯一标签
+  （active 0）并 onSpecMutated 持久化；tryAutoMount 改用 lockPane；待挂载记录带
+  {content,row,index}（用项目已保存 spec 解析「窗口N」），补挂同样 lockPane；提示词第 6 条
+  增加锁定语义说明。
+- 验证（probe-batch12.cjs）：窗口先放浏览器标签 → 完成事件 → tabsAfterLock=1 且唯一内容为
+  产物 iframe（原标签被替换）✓；lockedPersisted=true（写回 projects.v1）✓；关掉重开
+  reopenKeepsLock=true ✓；functional-diag 全 20 STEP ERROR_COUNT: 0。
+- 备注：纯客户端改动，F5 即生效；夹具目录已清理。
+
+
 
 
 
diff --git a/04_test/probe-batch12.cjs b/04_test/probe-batch12.cjs
new file mode 100644
index 0000000..5c2cec2
--- /dev/null
+++ b/04_test/probe-batch12.cjs
@@ -0,0 +1,99 @@
+// probe-batch12.cjs — 锁死挂载：完成后窗口被替换为唯一标签；重开项目（模拟下次进入）仍在
+const http = require('http');
+const { spawn } = require('child_process');
+const WebSocket = require('ws');
+const PORT = 9368;
+const proc = spawn('C:\\Program Files\\Google\\Chrome\\Application\\chrome.exe', [
+  '--headless=new', '--disable-gpu', '--no-first-run', '--no-default-browser-check',
+  '--window-size=1440,900', '--force-device-scale-factor=1',
+  '--remote-debugging-port=' + PORT,
+  '--user-data-dir=C:\\Users\\SJL\\AppData\\Local\\Temp\\wt-chrome-batch12',
+  'about:blank',
+], { stdio: 'ignore' });
+const getJSON = (p) => new Promise((res, rej) => {
+  http.get({ host: '127.0.0.1', port: PORT, path: p }, (r) => { let d=''; r.on('data',c=>d+=c); r.on('end',()=>{try{res(JSON.parse(d))}catch(e){rej(e)}}) }).on('error', rej);
+});
+const sleep = (ms) => new Promise((r) => setTimeout(r, ms));
+(async () => {
+  let list = null;
+  for (let i = 0; i < 40; i++) { try { list = await getJSON('/json/list'); if (list && list.length) break; } catch {} await sleep(500); }
+  const target = list.find((t) => t.type === 'page') || list[0];
+  const ws = new WebSocket(target.webSocketDebuggerUrl);
+  let id = 0; const pending = new Map();
+  const send = (method, params) => new Promise((res) => { const mid = ++id; pending.set(mid, res); ws.send(JSON.stringify({ id: mid, method, params })); });
+  ws.on('message', (raw) => { const m = JSON.parse(String(raw)); if (m.id && pending.has(m.id)) { pending.get(m.id)(m); pending.delete(m.id); } });
+  await new Promise((r) => ws.on('open', r));
+  await send('Runtime.enable');
+  await send('Page.enable');
+  await send('Page.addScriptToEvaluateOnNewDocument', {
+    source: "try{ if(window===window.top && location.origin==='http://127.0.0.1:3080'){ localStorage.setItem('dsh.worktable.projects.v1', JSON.stringify({order:[],lastUsed:{},hidden:[],nameOverrides:{},shortcuts:[],layouts:[{id:'t-layout',title:'L',top:null,left:null,main:[{id:'p1',title:'\u7a97\u53e31',min:200,content:null}],chatWidth:{default:320,min:240,max:600},chatSide:'right',chatFullHeight:false}],bindings:{},folders:{'t-layout':'C:\\\\Users\\\\SJL\\\\AppData\\\\Local\\\\Temp\\\\wt-mount-fixture'}})); localStorage.removeItem('dsh.worktable.notifyAck.v1'); localStorage.removeItem('dsh.worktable.pendingMount.v1'); } }catch(e){}",
+  });
+  await send('Page.navigate', { url: 'http://127.0.0.1:3080/' });
+  const evaluate = async (expr) => {
+    const r = await send('Runtime.evaluate', { expression: expr, returnByValue: true, awaitPromise: true });
+    if (r.result && r.result.exceptionDetails) return { __error: (r.result.exceptionDetails.exception || {}).description || r.result.exceptionDetails.text };
+    return r.result && r.result.result ? r.result.result.value : undefined;
+  };
+  let ready = null;
+  for (let i = 0; i < 30; i++) { await sleep(1000); ready = await evaluate("!!window.__dshWorktable && !!window.__dshSyncSessionScope"); if (ready === true) break; }
+  await sleep(1500);
+  const step = await evaluate(`(async function(){
+    var out = {};
+    var sleep = function(ms){ return new Promise(function(r){ setTimeout(r, ms); }); };
+    var vis = function(sel){ return [].slice.call(document.querySelectorAll(sel)).find(function(el){ return (getComputedStyle(el).visibility!=='hidden'&&el.getBoundingClientRect().height>0); }); };
+    var postJson = async function(url, body){ return await fetch(url, { method:'POST', headers:{'content-type':'application/json'}, body: JSON.stringify(body) }); };
+    try {
+      var fix = 'C:\\\\Users\\\\SJL\\\\AppData\\\\Local\\\\Temp\\\\wt-mount-fixture';
+      await postJson('/api/worktable/mkdir', { path: fix });
+      await postJson('/api/worktable/write', { path: fix + '\\\\page.html', content: '<html><body><h1>FLOWER</h1></body></html>' });
+      await postJson('/api/worktable/write', { path: fix + '\\\\widget-result.json', content: JSON.stringify({ window: '\u7a97\u53e31', path: 'page.html', kind: 'html' }) });
+      var S = window.__dshSessions;
+      var card = document.querySelector('.dsh-wt_layout');
+      var bbtn = card.querySelector('.dsh-wt_bindBtn');
+      bbtn.click();
+      await sleep(900);
+      var items = [].slice.call(document.querySelectorAll('.dsh-wt_bindList .dsh-wt_selectItem'));
+      if (items[0]) { items[0].click(); }
+      await sleep(800);
+      var boundId = JSON.parse(localStorage.getItem('dsh.worktable.projects.v1')).bindings['t-layout'];
+      // 先给窗口1 放一个已有标签（应被锁死替换掉）
+      var st = window.__dshWorktable.splitStore;
+      card.click();
+      await sleep(1200);
+      st.openTab('main', 0, { kind: 'builtin', type: 'browser' });
+      await sleep(400);
+      out.tabsBeforeLock = st.spec.main[0].tabs.length;
+      // 完成事件 → 锁死挂载
+      var listStore = S.list;
+      var orig = listStore.getSnapshot.bind(listStore);
+      listStore.getSnapshot = function(){ var s = orig(); var e = s.byId && s.byId[boundId]; if (e) { s.byId = Object.assign({}, s.byId); s.byId[boundId] = Object.assign({}, e, { completed: true, running: false }); } return s; };
+      window.__dshSyncSessionScope();
+      await sleep(2000);
+      var tabs = st.spec.main[0].tabs;
+      out.tabsAfterLock = tabs.length;
+      out.onlyContent = tabs.length === 1 ? { kind: tabs[0].content.kind, url: tabs[0].content.url ? tabs[0].content.url.slice(0, 80) : null, active: st.spec.main[0].active } : null;
+      out.lockedPersisted = (function(){ var j = JSON.parse(localStorage.getItem('dsh.worktable.projects.v1')); var l = (j.layouts||[]).find(function(x){ return x.id === 't-layout'; }); return l && l.main[0].tabs && l.main[0].tabs.length === 1 && l.main[0].tabs[0].content.url && l.main[0].tabs[0].content.url.indexOf('wt-mount-fixture') >= 0; })();
+      // 模拟下次进入：关掉 → 重开
+      st.close();
+      await sleep(400);
+      card.click();
+      await sleep(1400);
+      var tabs2 = st.spec.main[0].tabs;
+      out.reopenKeepsLock = tabs2.length === 1 && tabs2[0].content.url && tabs2[0].content.url.indexOf('wt-mount-fixture') >= 0;
+      // 清理
+      listStore.getSnapshot = orig;
+      st.close();
+      await sleep(400);
+      bbtn = card.querySelector('.dsh-wt_bindBtn');
+      bbtn.click();
+      await sleep(900);
+      var unbind = vis('.dsh-wt_bindUnbind');
+      if (unbind) { unbind.click(); }
+      await sleep(500);
+      localStorage.removeItem('dsh.worktable.pendingMount.v1');
+    } catch(e) { out.err = String(e); }
+    return JSON.stringify(out);
+  })()`);
+  console.log('BATCH12:', JSON.stringify(step));
+  ws.close(); proc.kill(); process.exit(0);
+})().catch((e) => { console.error('FATAL', e && e.stack || e); try { proc.kill(); } catch {} process.exit(1); });
diff --git a/AGENTS.md b/AGENTS.md
index 97d36fb..4ddd79f 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -51,6 +51,9 @@ node --check lib/index.js
   buildMountContent 转换产物 → 项目开着直接 openTab 进「窗口N」（windowLabelToPane 按窗口
   编号规则定位），项目没开暂存 pendingMountRef（localStorage，打开项目时补挂）；
   mountConsumedRef 保证一次完成只消费一次。
+  **锁死语义**：挂载用 splitStore.lockPane——清空该窗格原有标签，把产物作为唯一固定标签
+  （active 0），onSpecMutated 立即持久化；用户下次打开工作台窗口直接显示产物，不丢失不重置。
+  待挂载记录带 {content,row,index}，补挂同样 lockPane。
 - **原生皮肤模板**：01_content/template/dshell.css + dshell.html（esbuild text loader 嵌入服务端
   bundle，/api/worktable/template 路由下发）；知识包要求产出 HTML 一律引用该样式表，组件类
   参考模板。新增组件样式只加到 dshell.css，保持单一来源。