fix(ci): use broader canvas selector in migration UI test_01 (#216)

.react-flow exact class no longer matches in current nightly (ReactFlow
version bump changed class names). Use [class*='react-flow'] prefix
match with a fallback to generic node selectors.

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: lice-reis

tests/github-workflows/migration/test_ui_migration.py

@@ -57,8 +57,13 @@ def test_01_open_flow(self):
         self.page.goto(f"{self.base_url}/flow/{self.flow_id}", wait_until="networkidle")
         self.page.wait_for_timeout(5000)
 
-        # Verify the flow editor loaded (look for the canvas/reactflow area)
-        canvas = self.page.locator(".react-flow, [data-testid='rf__wrapper']")
+        # Verify the flow editor loaded — use a broad selector resilient to
+        # ReactFlow version changes (class prefix match covers react-flow,
+        # react-flow__renderer, react-flow__pane, etc.)
+        canvas = self.page.locator("[class*='react-flow'], [data-testid='rf__wrapper']")
+        if canvas.count() == 0:
+            # Fallback: check for any generic node card present in the flow editor
+            canvas = self.page.locator(".generic-node, [data-testid*='node'], .node-card")
         expect(canvas.first).to_be_visible(timeout=20_000)
 
         self.results["steps"]["open_flow"] = {"status": "pass"}