fix: 修复 3D NaN 崩溃/样品图不刷新/画布点选失效

- replayShape 段过滤补 Y 轴有限值校验(此前仅校验 X)
- inferSashGlyphs bdRect 增加有限值守卫
- WindoorThreed 逐网格有限值防护 + maxDim 守卫, 杜绝 NaN 网格
- CombineCanvas shapePts 过滤非有限点, 修复包围盒污染导致的点选失效
- 组合画布引入 rev 版本号: 原地变异几何后强制 3D 预览重建
  (修复尺寸编辑后样品图不变化)

frontend/src/types/drawing.ts

@@ -143,7 +143,9 @@ export function replayShape(shape: FrameShape): {
 } {
   const base = (shape.polygon?.polygon ?? [])
     .map(r => r
-      .filter(s => s && typeof s === 'object' && s.ps && s.pe && Number.isFinite(s.ps.x) && Number.isFinite(s.pe.x))
+      .filter(s => s && typeof s === 'object' && s.ps && s.pe
+        && Number.isFinite(s.ps.x) && Number.isFinite(s.ps.y)
+        && Number.isFinite(s.pe.x) && Number.isFinite(s.pe.y))
       .map(s => ({ ps: { ...s.ps }, pe: { ...s.pe } })))
     .filter(r => r.length >= 3)
   const regions: Segment[][] = base.map(r => r)
@@ -237,11 +239,13 @@ export function inferSashGlyphs(shape: FrameShape, replayed?: Segment[][]): {
   const regionBBs = regions.map(r => bboxOf(regionPoints(r)))
   const glyphs: SashGlyph[] = []
   const bdRect = (bd: NonNullable<SashShape['bd']>) => {
+    if (!bd.from || !bd.to) return null
     const r = {
       x0: Math.min(bd.from.x, bd.to.x), y0: Math.min(bd.from.y, bd.to.y),
       x1: Math.max(bd.from.x, bd.to.x), y1: Math.max(bd.from.y, bd.to.y),
     }
-    return !bd.hidden && r.x1 - r.x0 > 10 && r.y1 - r.y0 > 10 ? r : null
+    const ok = [r.x0, r.y0, r.x1, r.y1].every(v => Number.isFinite(v))
+    return ok && !bd.hidden && r.x1 - r.x0 > 10 && r.y1 - r.y0 > 10 ? r : null
   }
   const kindOf = (sub: SashShape) => (sub.type === 'DoubleSash' ? 'sliding' : 'casement') as 'sliding' | 'casement'
   const pushGlyphs = (r: { x0: number; y0: number; x1: number; y1: number }, entries: any[], sub: SashShape) => {