diff --git a/CHANGELOG b/CHANGELOG
index f1d622c..6b8e44c 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,5 +1,6 @@
 # CHANGELOG
 
+- [2026-09-21 00:40] FEAT: v1.4 旋转编辑+方向核验+双向门符号。①组合画布旋转编辑: 选中单元⟲/⟳90°旋转(绕几何中心, 分割线法向/开向角度同步旋转)与水平镜像, 工具栏按钮+Del删除; Node数学验证(宽高互换/法向转轴/可逆性✓); ②数据方向核验: 以31729(扇上固定下)与31740(裙板下)真实图纸比对, 确认2D渲染Y翻转方向正确(模型+y=屏幕上); ③2D渲染补双向开启门虚线交叉符号(wtf/withTurningFrame) (Files: frontend/src/components/CombineCanvas.vue, frontend/src/components/WindoorCanvas.vue, frontend/src/views/CombineView.vue)
 - [2026-09-21 00:10] FEAT: v1.3 样板组合升级为画布形式——交互对齐原站画图编辑器(库面板可拖拽+shapeManager按位添加)。新组件 CombineCanvas: 拖拽样板入库投放(落点即中心)/自由拖移(同uid单元整体移动)/边缘吸附对齐(红色辅助线,12px容差)/点选高亮/底边对齐/Del删除/平移缩放; CombineView 重构为画布交互(拖放+点击双入口), 保留2D编辑与3D预览切换、另存我的样板(导出时剥离内部标记字段); 原"顺序拼接"模式由画布自由摆放取代 (Files: frontend/src/components/CombineCanvas.vue, frontend/src/views/CombineView.vue)
 - [2026-09-20 23:40] FEAT: v1.2 样板组合工场+组合3D渲染+菜单分组。①样板组合(/combine): 样板库作为子组件点击加入, 多单元紧贴排布(平移归一), 等高对齐(参考首单元缩放), 删除/左右调序, 组合结果为标准多形状 drawing_data(与渲染/报价/AI炫图/3D全链路兼容), 可另存为我的样板; ②组合预览支持 2D/3D 双模式(Three.js 直接渲染组合 sm[]); ③侧边栏菜单分组: 销售业务/设计制图/生产供应/系统; 算法经 Node 几何验证(6形状无缝拼接/高度0误差) (Files: frontend/src/views/CombineView.vue, frontend/src/views/LayoutView.vue, frontend/src/router/index.ts)
 - [2026-09-20 23:45] FIX: 修复多页面"参数错误: page_size"——样板库接口 page_size 上限 le=200 但订单新建/AI炫图请求 254 条触发校验失败, 上限放宽至 le=1000; 同步修复 el-select 清空后 status 空串导致的参数错误(订单/合同/量尺/售后筛选归一化) (Files: src/huamenchuang/api/windoor.py, frontend/src/views/OrdersView.vue, frontend/src/views/ContractsView.vue, frontend/src/views/MeasureView.vue, frontend/src/views/AfterSaleView.vue)
diff --git a/frontend/src/components/CombineCanvas.vue b/frontend/src/components/CombineCanvas.vue
index 5c990c6..04d57c1 100644
--- a/frontend/src/components/CombineCanvas.vue
+++ b/frontend/src/components/CombineCanvas.vue
@@ -66,6 +66,70 @@ function uids(): number[] {
   return [...new Set(props.shapes.map(s => s.__uid))]
 }
 
+function bbOfLocal(shapes: any[]): BBox | null {
+  const pts = shapes.flatMap(shapePts)
+  return pts.length ? bboxOf(pts) : null
+}
+
+// ---------- 旋转/镜像编辑 ----------
+/** 旋转整个单元（绕其几何中心），同步旋转分割线法向与开向角度 */
+function rotateUnit(uid: number, deg: 90 | -90 | 180) {
+  const target = props.shapes.filter(s => s.__uid === uid)
+  const bb = bbOfLocal(target)
+  if (!bb) return
+  const cx2 = (bb.x0 + bb.x1) / 2, cy2 = (bb.y0 + bb.y1) / 2
+  const rad = (deg * Math.PI) / 180
+  const cos = Math.cos(rad), sin = Math.sin(rad)
+  const rotPt = (p: any) => {
+    const dx = p.x - cx2, dy = p.y - cy2
+    p.x = cx2 + dx * cos - dy * sin
+    p.y = cy2 + dx * sin + dy * cos
+  }
+  const rotVec = (v: any) => {
+    const nx = v.x ?? 1, ny = v.y ?? 0
+    v.x = nx * cos - ny * sin
+    v.y = nx * sin + ny * cos
+  }
+  for (const s of target) {
+    for (const r of (s.polygon?.polygon ?? [])) for (const seg of r) { rotPt(seg.ps); rotPt(seg.pe) }
+    for (const sp of (s.mm?.sp ?? [])) { rotPt(sp.line.pt); if (sp.line.norm) rotVec(sp.line.norm) }
+    for (const sub of (s.sm ?? [])) {
+      if (sub.bd) { rotPt(sub.bd.from); rotPt(sub.bd.to) }
+      if (typeof sub.od === 'number') sub.od = (sub.od + deg + 360) % 360
+      if (Array.isArray(sub.sashes)) for (const e of sub.sashes) {
+        if (typeof e?.od === 'number') e.od = (e.od + deg + 360) % 360
+      }
+    }
+  }
+  refresh()
+  emit('change')
+}
+
+/** 水平镜像整个单元（开向同步镜像） */
+function mirrorUnit(uid: number) {
+  const target = props.shapes.filter(s => s.__uid === uid)
+  const bb = bbOfLocal(target)
+  if (!bb) return
+  const cx2 = (bb.x0 + bb.x1) / 2
+  const mirPt = (p: any) => { p.x = 2 * cx2 - p.x }
+  for (const s of target) {
+    for (const r of (s.polygon?.polygon ?? [])) for (const seg of r) { mirPt(seg.ps); mirPt(seg.pe) }
+    for (const sp of (s.mm?.sp ?? [])) {
+      mirPt(sp.line.pt)
+      if (sp.line.norm) sp.line.norm.x = -(sp.line.norm.x ?? 1)
+    }
+    for (const sub of (s.sm ?? [])) {
+      if (sub.bd) { mirPt(sub.bd.from); mirPt(sub.bd.to) }
+      if (typeof sub.od === 'number') sub.od = (180 - sub.od + 360) % 360
+      if (Array.isArray(sub.sashes)) for (const e of sub.sashes) {
+        if (typeof e?.od === 'number') e.od = (180 - e.od + 360) % 360
+      }
+    }
+  }
+  refresh()
+  emit('change')
+}
+
 // 吸附: 单元边缘贴近其他单元边缘时对齐（返回修正后的位置与辅助线）
 function snap(bb: BBox, excludeUid: number): { dx: number; dy: number; guides: { v: number[]; h: number[] } } {
   const TOL = 12
@@ -251,7 +315,7 @@ function exportDrawing(): string | null {
     epi: [], sbf: [], wlc: '', wall: [], scale: 0, note: [],
   })
 }
-defineExpose({ refresh, modelAt, exportDrawing })
+defineExpose({ refresh, modelAt, exportDrawing, rotateUnit, mirrorUnit })
 
 onMounted(() => {
   watch(() => props.shapes, () => { selectedUid.value = null; rebuild() }, { immediate: true })
diff --git a/frontend/src/components/WindoorCanvas.vue b/frontend/src/components/WindoorCanvas.vue
index b30b2d4..1f1d15e 100644
--- a/frontend/src/components/WindoorCanvas.vue
+++ b/frontend/src/components/WindoorCanvas.vue
@@ -247,7 +247,7 @@ function drawFrame(
 
   // 扇(推断: 有效bd → polyId区域(双扇对半) → 帧bbox按扇数均分)
   const regionBBs = regions.map(pts => bboxOf(pts))
-  type Glyph = { x0: number; y0: number; x1: number; y1: number; od: number; openToward?: string; isDoor?: boolean }
+  type Glyph = { x0: number; y0: number; x1: number; y1: number; od: number; openToward?: string; isDoor?: boolean; wtf?: boolean }
   const glyphs: Glyph[] = []
   const bdRect = (bd: NonNullable<SashShape['bd']>) => {
     const r = {
@@ -263,6 +263,7 @@ function drawFrame(
         od: (e.od ?? sub.od ?? 90) as number,
         openToward: (e.openToward ?? sub.openToward) as string | undefined,
         isDoor: Boolean(e.isDoor ?? sub.isDoor),
+        wtf: Boolean(e.wtf ?? sub.wtf ?? sub.withTurningFrame),
       })
     }
   }
@@ -316,22 +317,32 @@ function drawFrame(
     ctx.lineWidth = 1.3
     ctx.strokeRect(bx0 + 2, by0 + 2, w - 4, h - 4)
     ctx.setLineDash([])
-    const ang = ((g.od || 90) * Math.PI) / 180
-    const cx = (bx0 + bx1) / 2, cy = (by0 + by1) / 2
-    const L = Math.min(w, h) * 0.32
-    const ax = cx + Math.cos(ang) * L, ay = cy - Math.sin(ang) * L
-    const wx = Math.cos(ang + Math.PI / 2) * L * 0.38
-    const wy = -Math.sin(ang + Math.PI / 2) * L * 0.38
-    ctx.beginPath()
-    ctx.moveTo(ax, ay)
-    ctx.lineTo(cx - wx, cy - wy)
-    ctx.lineTo(cx + wx, cy + wy)
-    ctx.closePath()
-    ctx.fillStyle = g.openToward === 'inward' ? 'rgba(255,255,255,0.55)' : 'rgba(70,76,82,0.25)'
-    ctx.fill()
-    ctx.strokeStyle = 'rgba(70,76,82,0.95)'
-    ctx.lineWidth = 1.4
-    ctx.stroke()
+    if (g.wtf) {
+      // 双向开启门：对角虚线交叉符号（对齐原站图纸样式）
+      ctx.strokeStyle = 'rgba(70,76,82,0.7)'
+      ctx.lineWidth = 1
+      ctx.beginPath()
+      ctx.moveTo(bx0 + 4, by0 + 4); ctx.lineTo(bx1 - 4, by1 - 4)
+      ctx.moveTo(bx1 - 4, by0 + 4); ctx.lineTo(bx0 + 4, by1 - 4)
+      ctx.stroke()
+    } else {
+      const ang = ((g.od || 90) * Math.PI) / 180
+      const cx = (bx0 + bx1) / 2, cy = (by0 + by1) / 2
+      const L = Math.min(w, h) * 0.32
+      const ax = cx + Math.cos(ang) * L, ay = cy - Math.sin(ang) * L
+      const wx = Math.cos(ang + Math.PI / 2) * L * 0.38
+      const wy = -Math.sin(ang + Math.PI / 2) * L * 0.38
+      ctx.beginPath()
+      ctx.moveTo(ax, ay)
+      ctx.lineTo(cx - wx, cy - wy)
+      ctx.lineTo(cx + wx, cy + wy)
+      ctx.closePath()
+      ctx.fillStyle = g.openToward === 'inward' ? 'rgba(255,255,255,0.55)' : 'rgba(70,76,82,0.25)'
+      ctx.fill()
+      ctx.strokeStyle = 'rgba(70,76,82,0.95)'
+      ctx.lineWidth = 1.4
+      ctx.stroke()
+    }
     if (g.isDoor) {
       ctx.fillStyle = 'rgba(70,76,82,0.85)'
       ctx.font = '10px sans-serif'
diff --git a/frontend/src/views/CombineView.vue b/frontend/src/views/CombineView.vue
index f3915b5..baa768b 100644
--- a/frontend/src/views/CombineView.vue
+++ b/frontend/src/views/CombineView.vue
@@ -25,6 +25,16 @@
           <div class="head-row">
             <span>组合画布（{{ units.length }} 个单元 · 拖动摆放 · 边缘自动吸附）</span>
             <div style="display:flex; gap:8px; align-items:center">
+              <el-tooltip content="选中单元逆时针旋转90°" placement="top">
+                <el-button size="small" :disabled="!selectedUid" @click="canvasRef?.rotateUnit(selectedUid!, -90)">⟲ 90°</el-button>
+              </el-tooltip>
+              <el-tooltip content="选中单元顺时针旋转90°" placement="top">
+                <el-button size="small" :disabled="!selectedUid" @click="canvasRef?.rotateUnit(selectedUid!, 90)">⟳ 90°</el-button>
+              </el-tooltip>
+              <el-tooltip content="选中单元水平镜像" placement="top">
+                <el-button size="small" :disabled="!selectedUid" @click="canvasRef?.mirrorUnit(selectedUid!)">⇋ 镜像</el-button>
+              </el-tooltip>
+              <el-divider direction="vertical" />
               <el-button size="small" :disabled="!selectedUid" @click="alignBottom">底边对齐</el-button>
               <el-button size="small" :disabled="!selectedUid" type="danger" plain @click="deleteSelected">删除单元</el-button>
               <el-button size="small" :disabled="!shapes.length" @click="clearAll">清空</el-button>