test: use rendered node viewport assertion

Amp-Thread-ID: https://ampcode.com/threads/T-01a01ca8-8281-759a-84ba-1665d58a0c82

Author: ampagent

browser_tests/fixtures/utils/litegraphUtils.ts

@@ -356,20 +356,6 @@ export class NodeReference {
     const nodeSize = await this.getSize()
     return { x: nodePos.x + nodeSize.width / 2, y: nodePos.y - 15 }
   }
-  async waitForTitleInView(): Promise<void> {
-    const canvas = await this.comfyPage.canvas.boundingBox()
-    if (!canvas) throw new Error('Canvas bounding box not available')
-
-    let previousX = Number.NaN
-    await expect
-      .poll(async () => {
-        const { x } = await this.getTitlePosition()
-        const settledInView = x === previousX && x < canvas.width
-        previousX = x
-        return settledInView
-      })
-      .toBe(true)
-  }
   async dragBy(
     delta: Position,
     options?: {

browser_tests/tests/subgraph/subgraphCreationBoundaryLinks.spec.ts

@@ -29,8 +29,8 @@ test(
       // view, so clicking its title silently misses and the selection is left
       // holding KSampler alone.
       await comfyPage.command.executeCommand('Comfy.Canvas.FitView')
-      const vaeDecode = await comfyPage.nodeOps.getNodeRefById('8')
-      await vaeDecode.waitForTitleInView()
+      const vaeDecode = await comfyPage.vueNodes.getFixtureByTitle('VAE Decode')
+      await expect(vaeDecode.header).toBeInViewport({ ratio: 1 })
 
       await comfyPage.nodeOps.selectNodes(['KSampler', 'VAE Decode'])
       expect(