diff --git a/01_content/src/client/index.tsx b/01_content/src/client/index.tsx
index 9755db9..3083cf8 100644
--- a/01_content/src/client/index.tsx
+++ b/01_content/src/client/index.tsx
@@ -66,10 +66,12 @@ const OVER_SIDE_PX = 80
 
 /** 拓扑预设（聊天窗恒贴右，PRD §13.2 硬约束）：左右/三栏/上一下二/井字 */
 const PRESET_DEFS = [
-  { id: '2h', topCount: 0, contentCount: 1 },
-  { id: '3h', topCount: 0, contentCount: 2 },
-  { id: 't2', topCount: 1, contentCount: 1 },
-  { id: 'grid', topCount: 2, contentCount: 1 },
+  { id: '2h', leftCount: 0, topCount: 0, contentCount: 1 },
+  { id: '3h', leftCount: 0, topCount: 0, contentCount: 2 },
+  { id: 'l2', leftCount: 1, topCount: 1, contentCount: 0 },
+  { id: 't2', leftCount: 0, topCount: 1, contentCount: 1 },
+  { id: 'grid', leftCount: 0, topCount: 2, contentCount: 1 },
+  { id: 't3', leftCount: 0, topCount: 1, contentCount: 2 },
 ] as const
 
 function buildLayout(presetId: string, name: string): LayoutSpec {
@@ -80,13 +82,16 @@ function buildLayout(presetId: string, name: string): LayoutSpec {
     min: 200,
     content: null,
   })
-  const top = Array.from({ length: def.topCount }, (_, i) => mk(i))
-  const main = Array.from({ length: def.contentCount }, (_, i) => mk(def.topCount + i))
+  const left = def.leftCount > 0 ? mk(0) : null
+  const top = Array.from({ length: def.topCount }, (_, i) => mk(def.leftCount + i))
+  const main = Array.from({ length: def.contentCount }, (_, i) => mk(def.leftCount + def.topCount + i))
   return {
     id: 'layout-' + Date.now().toString(36),
     title: name,
+    left: left ?? null,
     top: top.length > 0 ? top : null,
     main,
+    leftWidth: { default: 260, min: 160, max: 480 },
     chatWidth: { default: 360, min: 240, max: 600 },
     topHeight: { default: 200, min: 120, max: 480 },
     chatSide: 'right',
@@ -112,10 +117,29 @@ function presetThumb(defId: string) {
       </span>
     )
   }
+  if (defId === 'grid') {
+    return (
+      <span className="dsh-wt_thumb">
+        <span className="dsh-wt_thumbRow">{cell(false, 'a')}{cell(false, 'b')}</span>
+        <span className="dsh-wt_thumbRow">{cell(false, 'c')}{cell(true, 'd')}</span>
+      </span>
+    )
+  }
+  if (defId === 'l2') {
+    return (
+      <span className="dsh-wt_thumb dsh-wt_thumbCols">
+        <span className="dsh-wt_thumbCol">{cell(false, 'a')}</span>
+        <span className="dsh-wt_thumbCol">
+          <span className="dsh-wt_thumbRow">{cell(false, 'b')}</span>
+          <span className="dsh-wt_thumbRow">{cell(true, 'c')}</span>
+        </span>
+      </span>
+    )
+  }
   return (
     <span className="dsh-wt_thumb">
-      <span className="dsh-wt_thumbRow">{cell(false, 'a')}{cell(false, 'b')}</span>
-      <span className="dsh-wt_thumbRow">{cell(false, 'c')}{cell(true, 'd')}</span>
+      <span className="dsh-wt_thumbRow">{cell(false, 'a')}</span>
+      <span className="dsh-wt_thumbRow">{cell(false, 'b')}{cell(false, 'c')}{cell(true, 'd')}</span>
     </span>
   )
 }
@@ -225,10 +249,6 @@ function WorktableSection(props: any) {
   const [managing, setManaging] = useState(false)
   const [addOpen, setAddOpen] = useState(false)
   const [viewOptionsOpen, setViewOptionsOpen] = useState(false)
-  const [scName, setScName] = useState('')
-  const [scIcon, setScIcon] = useState('')
-  const [scHref, setScHref] = useState('')
-  const [scError, setScError] = useState(false)
   const [wsPreset, setWsPreset] = useState<string>('2h')
   const [wsName, setWsName] = useState('')
   const [wsError, setWsError] = useState(false)
@@ -535,16 +555,7 @@ function WorktableSection(props: any) {
     persistProjects((prev) => ({ ...prev, order: [], hidden: [], nameOverrides: {} }))
   }
 
-  // ── 快捷方式 ──
-  const addShortcut = () => {
-    const name = scName.trim()
-    const href = scHref.trim()
-    if (!name || !/^https?:\/\//i.test(href)) { setScError(true); return }
-    const shortcut: Shortcut = { id: 'sc-' + Date.now().toString(36), name, icon: scIcon.trim() || '🔗', href }
-    persistProjects((prev) => ({ ...prev, shortcuts: [...prev.shortcuts, shortcut] }))
-    setScName(''); setScIcon(''); setScHref(''); setScError(false)
-  }
-
+  // ── 快捷方式（表单已移除，仅保留存量条目的删除能力） ──
   const removeShortcut = (id: string) => {
     persistProjects((prev) => ({ ...prev, shortcuts: prev.shortcuts.filter((s) => s.id !== id) }))
   }
@@ -760,19 +771,6 @@ function WorktableSection(props: any) {
             <button type="button" className="dsh-wt_addBtn" onClick={saveLayout}>{t('add.layoutSave')}</button>
           </div>
           {wsError && <p className="dsh-wt_addError">{t('add.layoutInvalid')}</p>}
-          <div className="dsh-wt_menuSep" />
-          <span className="dsh-wt_menuLabel">{t('add.shortcutTitle')}</span>
-          <p className="dsh-wt_addText">{t('add.shortcutDesc')}</p>
-          <div className="dsh-wt_addForm">
-            <input type="text" placeholder={t('add.shortcutNamePh')} value={scName}
-              onChange={(e) => { setScName(e.target.value); setScError(false) }} />
-            <input type="text" className="dsh-wt_addIcon" placeholder={t('add.shortcutIcon')} value={scIcon} maxLength={4}
-              onChange={(e) => setScIcon(e.target.value)} />
-            <input type="text" placeholder={t('add.shortcutHref')} value={scHref}
-              onChange={(e) => { setScHref(e.target.value); setScError(false) }} />
-            <button type="button" className="dsh-wt_addBtn" onClick={addShortcut}>{t('add.shortcutAdd')}</button>
-          </div>
-          {scError && <p className="dsh-wt_addError">{t('add.shortcutInvalid')}</p>}
         </div>
       )}
 
diff --git a/01_content/src/client/locales.ts b/01_content/src/client/locales.ts
index 1ea9ae2..b94529f 100644
--- a/01_content/src/client/locales.ts
+++ b/01_content/src/client/locales.ts
@@ -47,8 +47,10 @@ export const zh = {
   'add.layoutInvalid': '请填写布局名称',
   'preset.2h': '左右两栏',
   'preset.3h': '三栏横排',
+  'preset.l2': '左一右二',
   'preset.t2': '上一下二',
   'preset.grid': '井字四栏',
+  'preset.t3': '上一下三',
   'manage.deleteLayout': '删除布局',
   'pane.browser': '浏览器',
   'pane.explorer': '资源管理器',
@@ -110,8 +112,10 @@ export const en = {
   'add.layoutInvalid': 'Enter a layout name',
   'preset.2h': 'Side by side',
   'preset.3h': 'Three columns',
+  'preset.l2': 'Left + stacked',
   'preset.t2': 'Top + two',
   'preset.grid': '2×2 grid',
+  'preset.t3': 'Top + three',
   'manage.deleteLayout': 'Delete layout',
   'pane.browser': 'Browser',
   'pane.explorer': 'Explorer',
diff --git a/01_content/src/client/split.tsx b/01_content/src/client/split.tsx
index 3fb1d9d..4a217a4 100644
--- a/01_content/src/client/split.tsx
+++ b/01_content/src/client/split.tsx
@@ -23,6 +23,9 @@ export type LayoutSpec = {
   title: string
   top: SplitPane[] | null
   main: SplitPane[]
+  /** 左列整高内容窗（可选；存在时右侧列 = top 行 + 底部聊天，chatSide 固定 right） */
+  left?: SplitPane | null
+  leftWidth?: { default: number; min: number; max: number }
   chatWidth: { default: number; min: number; max: number }
   topHeight?: { default: number; min: number; max: number }
   /** 聊天窗贴边位置：'right'（右列/右下，默认）| 'left'（左列/左下） */
@@ -31,7 +34,7 @@ export type LayoutSpec = {
 
 type Geom = { left: number; top: number; right: number; bottom: number }
 
-type PaneRow = 'top' | 'main'
+type PaneRow = 'left' | 'top' | 'main'
 
 type SplitState = {
   active: boolean
@@ -39,8 +42,10 @@ type SplitState = {
   geom: Geom | null
   chatW: number
   topH: number
+  leftW: number
   paneWs: number[]
   topWs: number[]
+  leftWs: number[]
   root: HTMLElement | null
   header: HTMLElement | null
   viewArea: HTMLElement | null
@@ -62,6 +67,7 @@ type SplitState = {
   applyMargin(): void
   setChatW(w: number): void
   setTopH(h: number): void
+  setLeftW(w: number): void
   setPaneW(i: number, w: number): void
   setTopW(i: number, w: number): void
   setPaneContent(row: PaneRow, i: number, content: SplitContent | null): void
@@ -105,7 +111,7 @@ function findConversationRoot(): HTMLElement | null {
     ?? null
 }
 
-function loadSaved(layoutId: string): { chatW: number; topH: number; paneWs: number[]; topWs: number[] } | null {
+function loadSaved(layoutId: string): { chatW: number; topH: number; leftW: number; paneWs: number[]; topWs: number[]; leftWs: number[] } | null {
   try {
     const raw = localStorage.getItem(PERSIST_KEY)
     if (!raw) return null
@@ -114,15 +120,17 @@ function loadSaved(layoutId: string): { chatW: number; topH: number; paneWs: num
     return {
       chatW: Number.isFinite(s.chatW) ? s.chatW : -1,
       topH: Number.isFinite(s.topH) ? s.topH : -1,
+      leftW: Number.isFinite(s.leftW) ? s.leftW : -1,
       paneWs: Array.isArray(s.paneWs) ? s.paneWs : [],
       topWs: Array.isArray(s.topWs) ? s.topWs : [],
+      leftWs: Array.isArray(s.leftWs) ? s.leftWs : [],
     }
   } catch {
     return null
   }
 }
 
-function persistSaved(layoutId: string, s: { chatW: number; topH: number; paneWs: number[]; topWs: number[] }) {
+function persistSaved(layoutId: string, s: { chatW: number; topH: number; leftW: number; paneWs: number[]; topWs: number[]; leftWs: number[] }) {
   try {
     const raw = localStorage.getItem(PERSIST_KEY)
     const all = raw ? JSON.parse(raw) : {}
@@ -143,8 +151,10 @@ export const splitStore: SplitState = {
   geom: null,
   chatW: 320,
   topH: 200,
+  leftW: 260,
   paneWs: [],
   topWs: [],
+  leftWs: [],
   root: null,
   header: null,
   viewArea: null,
@@ -186,11 +196,14 @@ export const splitStore: SplitState = {
     this.spec = { ...spec, chatSide: spec.chatSide === 'left' ? 'left' : 'right' }
     const main = spec.main ?? []
     const top = spec.top ?? []
+    const left = spec.left ?? null
     const saved = loadSaved(spec.id)
     this.chatW = saved && saved.chatW >= 0 ? saved.chatW : spec.chatWidth.default
     this.topH = saved && saved.topH >= 0 ? saved.topH : (spec.topHeight?.default ?? 200)
+    this.leftW = saved && saved.leftW >= 0 ? saved.leftW : (spec.leftWidth?.default ?? 260)
     this.paneWs = saved && saved.paneWs.length === main.length ? [...saved.paneWs] : main.map((p) => p.min)
     this.topWs = saved && saved.topWs.length === top.length ? [...saved.topWs] : top.map((p) => p.min)
+    this.leftWs = saved && saved.leftWs.length === (left ? 1 : 0) ? [...saved.leftWs] : (left ? [left.min] : [])
     this.root = root
     this.header = header
     this.viewArea = viewArea
@@ -288,16 +301,20 @@ export const splitStore: SplitState = {
     if (!viewArea || !g || !spec) return
     const colW = g.right - g.left
     const rowH = g.bottom - g.top
+    const hasLeft = !!spec.left
     const hasTop = !!(spec.top && spec.top.length > 0)
     const chatW = clamp(this.chatW, spec.chatWidth.min, Math.max(spec.chatWidth.min, colW - 60))
     const topH = hasTop
       ? clamp(this.topH, spec.topHeight?.min ?? 80, Math.max(spec.topHeight?.min ?? 80, rowH - BAR_H - 80))
       : 0
+    const leftW = hasLeft
+      ? clamp(this.leftW, spec.leftWidth?.min ?? 160, Math.max(spec.leftWidth?.min ?? 160, colW - 260))
+      : 0
     const gap = Math.max(0, colW - chatW) + 'px'
     const mt = (BAR_H + topH) + 'px'
-    const chatLeft = spec.chatSide === 'left'
-    this.lastMarginLeft = chatLeft ? '' : gap
-    this.lastMarginRight = chatLeft ? gap : ''
+    const chatLeft = !hasLeft && spec.chatSide === 'left'
+    this.lastMarginLeft = hasLeft ? leftW + 'px' : (chatLeft ? '' : gap)
+    this.lastMarginRight = hasLeft ? '' : (chatLeft ? gap : '')
     this.lastMarginTop = mt
     viewArea.style.marginLeft = this.lastMarginLeft
     viewArea.style.marginRight = this.lastMarginRight
@@ -331,6 +348,19 @@ export const splitStore: SplitState = {
     this.notify()
   },
 
+  setLeftW(w) {
+    const g = this.geom
+    const spec = this.spec
+    if (!g || !spec || !spec.left) return
+    const colW = g.right - g.left
+    const lo = spec.leftWidth?.min ?? 160
+    const hi = Math.max(lo, colW - 260)
+    this.leftW = clamp(Math.round(w), lo, hi)
+    this.applyMargin()
+    this.persist()
+    this.notify()
+  },
+
   setPaneW(i, w) {
     const g = this.geom
     const spec = this.spec
@@ -370,6 +400,14 @@ export const splitStore: SplitState = {
   setPaneContent(row, i, content) {
     const spec = this.spec
     if (!spec) return
+    if (row === 'left') {
+      if (!spec.left || i !== 0) return
+      this.spec = { ...spec, left: { ...spec.left, content } }
+      this.onSpecMutated?.(this.spec)
+      this.persist()
+      this.notify()
+      return
+    }
     const top = [...(spec.top ?? [])]
     const main = [...spec.main]
     const arr = row === 'top' ? top : main
@@ -386,28 +424,29 @@ export const splitStore: SplitState = {
     if (!spec) return
     const top = [...(spec.top ?? [])]
     const main = [...spec.main]
-    const arrA = aRow === 'top' ? top : main
-    const arrB = bRow === 'top' ? top : main
-    const a = arrA[aI]
-    const b = arrB[bI]
-    if (!a || !b) return
-    arrA[aI] = b
-    arrB[bI] = a
-    if (aRow === bRow) {
-      const ws = aRow === 'top' ? this.topWs.slice() : this.paneWs.slice()
-      const t = ws[aI]; ws[aI] = ws[bI]; ws[bI] = t
-      if (aRow === 'top') this.topWs = ws
-      else this.paneWs = ws
-    } else {
-      const aWs = aRow === 'top' ? this.topWs.slice() : this.paneWs.slice()
-      const bWs = bRow === 'top' ? this.topWs.slice() : this.paneWs.slice()
-      const ta = aWs[aI]; const tb = bWs[bI]
-      aWs[aI] = tb
-      bWs[bI] = ta
-      if (aRow === 'top') { this.topWs = aWs; this.paneWs = bWs }
-      else { this.topWs = bWs; this.paneWs = aWs }
+    const left = spec.left ? { ...spec.left } : null
+    const arrOf = (row: PaneRow): SplitPane[] => (row === 'left' ? (left ? [left] : []) : row === 'top' ? top : main)
+    const setOf = (row: PaneRow, i: number, pane: SplitPane) => {
+      if (row === 'left') spec.left = pane
+      else if (row === 'top') top[i] = pane
+      else main[i] = pane
     }
-    this.spec = { ...spec, top: top.length > 0 ? top : null, main }
+    const a = arrOf(aRow)[aI]
+    const b = arrOf(bRow)[bI]
+    if (!a || !b) return
+    setOf(aRow, aI, b)
+    setOf(bRow, bI, a)
+    const wsOf = (row: PaneRow): number[] => (row === 'left' ? this.leftWs : row === 'top' ? this.topWs : this.paneWs)
+    const setWs = (row: PaneRow, i: number, v: number) => {
+      if (row === 'left') { const n = this.leftWs.slice(); n[i] = v; this.leftWs = n }
+      else if (row === 'top') { const n = this.topWs.slice(); n[i] = v; this.topWs = n }
+      else { const n = this.paneWs.slice(); n[i] = v; this.paneWs = n }
+    }
+    const aW = wsOf(aRow)[aI]
+    const bW = wsOf(bRow)[bI]
+    setWs(aRow, aI, bW)
+    setWs(bRow, bI, aW)
+    this.spec = { ...spec, left: left ?? null, top: top.length > 0 ? top : null, main }
     this.onSpecMutated?.(this.spec)
     this.persist()
     this.notify()
@@ -416,6 +455,7 @@ export const splitStore: SplitState = {
   setChatSide(side) {
     const spec = this.spec
     if (!spec) return
+    if (spec.left) return // 左列布局：聊天固定右下
     this.spec = { ...spec, chatSide: side }
     this.onSpecMutated?.(this.spec)
     this.applyMargin()
@@ -425,7 +465,7 @@ export const splitStore: SplitState = {
 
   persist() {
     if (!this.spec) return
-    persistSaved(this.spec.id, { chatW: this.chatW, topH: this.topH, paneWs: this.paneWs, topWs: this.topWs })
+    persistSaved(this.spec.id, { chatW: this.chatW, topH: this.topH, leftW: this.leftW, paneWs: this.paneWs, topWs: this.topWs, leftWs: this.leftWs })
   },
 
   close() {
@@ -474,7 +514,7 @@ function allocate(panes: SplitPane[], ws: number[], total: number) {
 }
 
 /** 通用分隔线拖拽（chat/top/pane/topPane） */
-function makeDividerHandler(kind: 'chat' | 'top' | 'pane' | 'topPane', index?: number) {
+function makeDividerHandler(kind: 'left' | 'chat' | 'top' | 'pane' | 'topPane', index?: number) {
   return (e: any) => {
     e.preventDefault()
     const target = e.currentTarget as HTMLElement
@@ -482,7 +522,9 @@ function makeDividerHandler(kind: 'chat' | 'top' | 'pane' | 'topPane', index?: n
     const onMove = (ev: PointerEvent) => {
       const g = splitStore.geom
       if (!g) return
-      if (kind === 'chat') {
+      if (kind === 'left') {
+        splitStore.setLeftW(ev.clientX - g.left)
+      } else if (kind === 'chat') {
         splitStore.setChatW(g.right - ev.clientX)
       } else if (kind === 'top') {
         splitStore.setTopH(ev.clientY - g.top - BAR_H)
@@ -637,19 +679,26 @@ function SplitWorkspace() {
   const spec = snap.spec
   const top = spec.top ?? []
   const main = spec.main ?? []
+  const hasLeft = !!spec.left
   const hasTop = top.length > 0
-  const chatLeft = spec.chatSide === 'left'
+  const chatLeft = !hasLeft && spec.chatSide === 'left'
   const colW = g.right - g.left
   const rowH = g.bottom - g.top
   const chatW = clamp(snap.chatW, spec.chatWidth.min, Math.max(spec.chatWidth.min, colW - 60))
   const topH = hasTop
     ? clamp(snap.topH, spec.topHeight?.min ?? 80, Math.max(spec.topHeight?.min ?? 80, rowH - BAR_H - 80))
     : 0
+  const leftW = hasLeft
+    ? clamp(snap.leftW, spec.leftWidth?.min ?? 160, Math.max(spec.leftWidth?.min ?? 160, colW - 260))
+    : 0
   const contentW = Math.max(0, colW - chatW)
-  const contentX = chatLeft ? g.left + chatW : g.left
+  const contentX = hasLeft ? g.left + leftW : (chatLeft ? g.left + chatW : g.left)
+  const topRowX = hasLeft ? g.left + leftW : g.left
+  const topRowW = hasLeft ? Math.max(0, colW - leftW) : colW
 
-  const topItems = allocate(top, snap.topWs, colW)
+  const topItems = allocate(top, snap.topWs, topRowW)
   const mainItems = allocate(main, snap.paneWs, contentW)
+  const leftItem = spec.left ? { pane: spec.left, left: 0, width: leftW } : null
 
   const barTop = g.top
   const bodyTop = barTop + BAR_H + topH
@@ -682,18 +731,22 @@ function SplitWorkspace() {
   return (
     <>
       {/* 标题栏 */}
-      <div className="dsh-wt_splitBar" style={{ position: 'fixed', left: contentX, top: barTop, width: hasTop ? colW : contentW, zIndex: 70 }}>
+      <div className="dsh-wt_splitBar" style={{ position: 'fixed', left: g.left, top: barTop, width: hasLeft ? colW : (hasTop ? colW : contentW), zIndex: 70 }}>
         <span className="dsh-wt_splitTitle">{spec.title}</span>
-        <button
-          type="button"
-          className="dsh-wt_splitFlip"
-          title={T('split.flip')}
-          onClick={() => splitStore.setChatSide(chatLeft ? 'right' : 'left')}
-        >⇄</button>
+        {!hasLeft && (
+          <button
+            type="button"
+            className="dsh-wt_splitFlip"
+            title={T('split.flip')}
+            onClick={() => splitStore.setChatSide(chatLeft ? 'right' : 'left')}
+          >⇄</button>
+        )}
         <button type="button" className="dsh-wt_splitClose" aria-label="退出分栏（Esc）" onClick={() => splitStore.close()}>✕</button>
       </div>
-      {/* 顶部通栏行 */}
-      {hasTop && topItems.map((it, i) => renderPane(it, 'top', i, g.left, topY, topH))}
+      {/* 左列整高内容窗 */}
+      {leftItem && renderPane(leftItem, 'left', 0, g.left, barTop + BAR_H, g.bottom - barTop - BAR_H)}
+      {/* 顶部通栏行（左列布局时为右侧列顶行） */}
+      {hasTop && topItems.map((it, i) => renderPane(it, 'top', i, topRowX, topY, topH))}
       {/* 主行内容窗 */}
       {mainItems.map((it, i) => renderPane(it, 'main', i, contentX, bodyTop, mainH))}
       {/* 顶部/主行水平分隔线 */}
@@ -702,7 +755,7 @@ function SplitWorkspace() {
           className="dsh-wt_splitDivider dsh-wt_splitDividerH"
           role="separator"
           title="拖动调整上下分区"
-          style={{ position: 'fixed', left: g.left, top: bodyTop - DIVIDER / 2, width: colW, height: DIVIDER, zIndex: 72 }}
+          style={{ position: 'fixed', left: topRowX, top: bodyTop - DIVIDER / 2, width: topRowW, height: DIVIDER, zIndex: 72 }}
           onPointerDown={makeDividerHandler('top')}
         />
       )}
@@ -713,7 +766,7 @@ function SplitWorkspace() {
           className="dsh-wt_splitDivider"
           role="separator"
           title="拖动调整宽度"
-          style={{ position: 'fixed', left: g.left + it.left + it.width + DIVIDER / 2, top: topY, width: DIVIDER, height: topH, zIndex: 72 }}
+          style={{ position: 'fixed', left: topRowX + it.left + it.width + DIVIDER / 2, top: topY, width: DIVIDER, height: topH, zIndex: 72 }}
           onPointerDown={makeDividerHandler('topPane', i)}
         />
       ))}
@@ -728,13 +781,20 @@ function SplitWorkspace() {
           onPointerDown={makeDividerHandler('pane', i)}
         />
       ))}
-      {/* 聊天分隔线（主行内容与聊天窗之间） */}
+      {/* 聊天分隔线（左列布局 = 左/右列边界；其余 = 内容与聊天之间） */}
       <div
         className="dsh-wt_splitDivider"
         role="separator"
-        title="拖动调整聊天宽度"
-        style={{ position: 'fixed', left: (chatLeft ? g.left + chatW : g.right - chatW) - DIVIDER / 2, top: bodyTop, width: DIVIDER, height: mainH, zIndex: 72 }}
-        onPointerDown={makeDividerHandler('chat')}
+        title={hasLeft ? '拖动调整左右列宽' : '拖动调整聊天宽度'}
+        style={{
+          position: 'fixed',
+          left: (hasLeft ? g.left + leftW : (chatLeft ? g.left + chatW : g.right - chatW)) - DIVIDER / 2,
+          top: hasLeft ? barTop + BAR_H : bodyTop,
+          width: DIVIDER,
+          height: hasLeft ? g.bottom - barTop - BAR_H : mainH,
+          zIndex: 72,
+        }}
+        onPointerDown={makeDividerHandler(hasLeft ? 'left' : 'chat')}
       />
     </>
   )
diff --git a/01_content/src/client/styles.ts b/01_content/src/client/styles.ts
index b9ecafd..58f8938 100644
--- a/01_content/src/client/styles.ts
+++ b/01_content/src/client/styles.ts
@@ -83,12 +83,14 @@ export const css = [
   '.dsh-wt_splitDividerH{cursor:row-resize}',
   '.dsh-wt_splitDivider:hover,.dsh-wt_splitDividerH:hover{background:var(--dsw-alias-state-accent-primary,#4f8ef7)}',
   // 新建工作区（拓扑预设）
-  '.dsh-wt_presets{display:flex;gap:6px;padding:2px 8px 6px}',
+  '.dsh-wt_presets{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;padding:2px 8px 6px}',
   '.dsh-wt_preset{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;padding:6px 2px;border:1px solid var(--dsw-alias-border-l1,#262b36);border-radius:6px;background:transparent;color:var(--dsw-alias-label-secondary,#9aa4b2);font:inherit;font-size:10px;line-height:13px;cursor:pointer}',
   '.dsh-wt_preset:hover{border-color:var(--dsw-alias-border-l2,#3a4150)}',
   '.dsh-wt_preset[data-on=true]{border-color:var(--dsw-alias-state-accent-primary,#4f8ef7);color:var(--dsw-alias-state-accent-primary,#4f8ef7)}',
   '.dsh-wt_thumb{display:flex;flex-direction:column;width:54px;height:36px;border:1px solid var(--dsw-alias-border-l2,#3a4150);border-radius:3px;overflow:hidden;background:var(--dsw-alias-fill-l1,rgba(255,255,255,.03))}',
   '.dsh-wt_thumbRow{flex:1;display:flex;min-height:0}',
+  '.dsh-wt_thumbCols{flex-direction:row}',
+  '.dsh-wt_thumbCol{flex:1;min-width:0;display:flex;flex-direction:column}',
   '.dsh-wt_thumbRow:last-child .dsh-wt_thumbCell{border-bottom:none}',
   '.dsh-wt_thumbCell{flex:1;min-width:0;border-right:1px solid var(--dsw-alias-border-l1,#262b36);border-bottom:1px solid var(--dsw-alias-border-l1,#262b36);display:flex;align-items:center;justify-content:center;font-size:8px;line-height:1}',
   '.dsh-wt_thumbRow .dsh-wt_thumbCell:last-child{border-right:none}',
diff --git a/02_process/PRD.md b/02_process/PRD.md
index bf17003..8e7319a 100644
--- a/02_process/PRD.md
+++ b/02_process/PRD.md
@@ -332,9 +332,11 @@ type SplitPane = {
 ### 13.5 「+」面板改版
 
 - 「+」点击后**向右侧弹出悬浮面板**（fixed 锚定 sidebar 右边缘与工作台区块顶部，320px 宽、
-  视口内钳制；透明遮罩点击关闭），不再使用侧边栏内展开式下拉；
-  两个入口：1. **新建工作区**：可视化拓扑缩略图选择 → 只填布局名称 → 进入；
-  2. **快捷方式**：本地条目功能保留（§5.6，接入指引已移除）；
+  视口内钳制；透明遮罩点击关闭），不再使用侧边栏内展开式下拉；面板内容仅「选择布局 + 填名称」
+  （快捷方式表单暂移除，存量快捷方式条目仍保留展示/删除）；
+- **拓扑预设六个**（2 行 × 3 列缩略图网格，聊天窗蓝色 💬 标注）：
+  左右两栏 / 三栏横排 / 左一右二 / 上一下二 / 井字四栏 / 上一下三（2026-08-16 定案）；
+  左一右二 = 左列整高内容窗 + 右列「上内容 + 下聊天」（左列布局聊天固定右下，无 ⇄ 翻转）；
 - 保存的布局以「布局条目」形式出现在项目区（布局 = 一种工作台项目），点击打开 tiling 工作区，
   再次点击 / ✕ / Esc 关闭。
 
diff --git a/02_process/worklogs/2026-08-16_worktable-v2.md b/02_process/worklogs/2026-08-16_worktable-v2.md
index edcc36a..cee1856 100644
--- a/02_process/worklogs/2026-08-16_worktable-v2.md
+++ b/02_process/worklogs/2026-08-16_worktable-v2.md
@@ -310,3 +310,17 @@
   top = 工作台区块顶部（钳制 56..视口-540）；内容不变（布局缩略图 → 名称 → 进入 /
   快捷方式表单）；样式 .dsh-wt_pop 限高滚动 + 阴影。
 - 构建 + node --check 通过；服务端实时下发（含 popBackdrop/dsh-wt_pop），无需重启，用户刷新生效。
+
+## 补记（+ 弹窗精简 + 布局扩为 6 个 + 左列布局引擎支持）
+
+- 用户定案：① + 弹窗去掉「本地快捷方式」表单（只留布局选择 + 名称；存量快捷方式条目仍保留）；
+  ② 布局扩为 6 个：新增「左一右二」（左侧一个整高窗，右侧竖排两个，右下为聊天）与
+  「上一下三」（上面一个通栏，下面横分三个，最右为聊天）；6 个布局 2 行 × 3 列排布。
+- 引擎（split.tsx）：LayoutSpec 新增 left（左列整高内容窗，可选）+ leftWidth；左列布局下
+  聊天固定右下（marginLeft=leftW + marginTop 组合挤法），⇄ 翻转按钮隐藏；新增 setLeftW 与
+  'left' 分隔线（左/右列边界拖拽）；setPaneContent/swapPanes 泛化支持 left 行；leftW 持久化。
+- 预设与 UI（index.tsx/locales/styles）：PRESET_DEFS 增 leftCount 字段与 l2/t3 两项；
+  缩略图新增左列样式（thumbCols/thumbCol）；预设网格 3 列；弹窗移除快捷方式表单及对应状态/函数
+  （removeShortcut 保留）；词典新增 preset.l2/preset.t3。
+- 验证：构建 + node --check 通过；服务端实时下发（含 preset.l2/leftWidth/setLeftW）；
+  待用户刷新实测。