fix TypeError: nodes is not iterable when loading graph

[christian-byrne]

Summary

• Fixes Sentry issue CLOUD-FRONTEND-STAGING-29 (TypeError: nodes is not iterable)
• Adds defensive guard to check if nodes is valid array before iteration
• Gracefully handles malformed workflow data by skipping node processing

Root Cause

The collectMissingNodesAndModels function in src/scripts/app.ts:1135 was attempting to iterate over nodes without checking if it was a valid iterable, causing crashes when workflow data was malformed or missing the nodes property.

Fix

Added null/undefined/array validation before the for-loop:

if (\!nodes || \!Array.isArray(nodes)) {
  console.warn('Workflow nodes data is missing or invalid, skipping node processing', { nodes, path })
  return
}

Fixes CLOUD-FRONTEND-STAGING-29

┆Issue is synchronized with this Notion page by Unito

[github-actions]

🎭 Playwright Test Results

✅ All tests passed!

⏰ Completed at: 09/19/2025, 06:22:11 AM UTC

📈 Summary

• Total Tests: 450
• Passed: 421 ✅
• Failed: 0
• Flaky: 0
• Skipped: 29 ⏭️

📊 Test Reports by Browser

• ✅ chromium: View Report • ✅ 414 / ❌ 0 / ⚠️ 0 / ⏭️ 29
• ✅ chromium-2x: View Report • ✅ 2 / ❌ 0 / ⚠️ 0 / ⏭️ 0
• ✅ chromium-0.5x: View Report • ✅ 1 / ❌ 0 / ⚠️ 0 / ⏭️ 0
• ✅ mobile-chrome: View Report • ✅ 4 / ❌ 0 / ⚠️ 0 / ⏭️ 0

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