Feature/delta team/epic r04 (#7)

## Summary

epic r04 - begin refactor

## Change Type

- [x] 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: Anh Tran Nguyen Minh <anhtnm1@fpt.com>
Co-authored-by: Huong Le Thi Thien <huongltt35@fpt.com>
Co-authored-by: Nam Pham Dinh Thanh <nampdt@fpt.com>
Co-authored-by: Vu Dam Tuan <vudt15@fpt.com>
Co-authored-by: Hiep Ha Van <hiephv3@fpt.com>
Co-authored-by: Lam Hoang Van <lamhv7@fpt.com>
Reviewed-on: #7
Co-authored-by: Duy Le Huu <duylh19@fpt.com>

tools/check_graphrag_rescan.py

@@ -21,7 +21,7 @@ sys.path.insert(0, str(Path(__file__).resolve().parent))
 os.environ.setdefault("QT_QPA_PLATFORM", "offscreen")
 
 from capture_screens import (  # noqa: E402
-    _apply_theme, _freeze_schedulers, _isolate_home, _load_fonts)
+    _apply_theme, _freeze_schedulers, _isolate_home, _load_fonts, owner_of)
 
 
 def main() -> int:
@@ -50,6 +50,10 @@ def main() -> int:
     win.show()
     app.processEvents()
     st, w = win.structure, win.workspace
+    # R08-T14 split StructureGraphView: the browser view, the cached graph
+    # and the scan/render steps all moved onto GraphRenderer, while the shell
+    # only forwards the public methods. Probe the widget that owns them.
+    st = owner_of(st, "web") or st
     fails: list[str] = []
 
     # startup itself must not build any of it