Fix init issue

src/renderer/core/layout/dom/canvasRectCache.ts

@@ -61,5 +61,18 @@ export function getCanvasRect(): Rect {
 
 export function getCanvasClientOrigin() {
   ensureContainer()
-  return { left: x.value || 0, top: y.value || 0 }
+  const el = containerRef.value
+  // VueUse refs can be 0 on first read right after binding
+  // if the element was assigned in the same tick. In that case,
+  // synchronously read from getBoundingClientRect as a fallback
+  // to avoid returning a zero offset during initialization.
+  const lx = x.value || 0
+  const ly = y.value || 0
+  // Also check width/height to distinguish a legitimate (0,0)
+  // from an unmeasured state (all zeros)
+  if (el && lx === 0 && ly === 0 && width.value === 0 && height.value === 0) {
+    const rect = el.getBoundingClientRect()
+    return { left: rect.left, top: rect.top }
+  }
+  return { left: lx, top: ly }
 }