Fix/qa defects df002 df011 (#9)

## Summary

What changed and why?

## Change Type

- [ ] Cowork feature
- [ ] Bug fix
- [ ] Core AI contribution
- [ ] Test / hardening
- [ ] Performance
- [ ] Documentation

## Related Work

Cowork Task:

Core Repo: http://34.143.229.138/gitea-admin/fsg-ai-core-assets

Core AI Issue:

Core Task:

Related PR:

## Scope

What is intentionally included?

What is intentionally NOT included?

## Validation

- [ ] Unit tests
- [ ] Integration tests
- [ ] Manual verification
- [ ] Regression check

Commands / evidence:

## Security Impact

Permission / credential / network / customer data impact:

## Compatibility

- [ ] No breaking change
- [ ] Breaking change documented

## Reviewer Notes

Anything Cowork reviewers should pay attention to.

---------

Co-authored-by: thanhnv <thanhnv.ip@gmail.com>
Co-authored-by: Vu Dam Tuan <vudt15@fpt.com>
Reviewed-on: #9

presentation/co4e/co4e_flow_tabs.py

@@ -101,6 +101,11 @@ class Co4EFlowTabsMixin:
         self.center_stack.setCurrentIndex(1)
         self._sync_runs_toggle(False)
         self._apply_workflow(self._flows[flow_idx])
+        # _apply_workflow() rebuilds the canvas from wf.nodes/edges, which
+        # resets every node's live status to "idle" — without this, coming
+        # back to a flow that's still running (e.g. from the Runs page)
+        # shows every node as idle even though it's actually mid-run.
+        self._reflect_active_run(self._flows[flow_idx].id)
     def _sync_runs_toggle(self, on: bool) -> None:
         """Keep the Runs toggle showing which page is up, however it got there
         (a double-click in the runs table also switches pages)."""