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>

ui/icons.py

@@ -351,6 +351,7 @@ class IconLabel(QWidget):
 
     def __init__(self, name: str, text: str = "", *, size: int = 16,
                  color: str | None = None, gap: int = 6, parent=None):
+        """Một nhãn có biểu tượng đứng trước chữ, dùng cho các hàng thông tin."""
         super().__init__(parent)
         self._size = size
         lay = QHBoxLayout(self)
@@ -364,12 +365,17 @@ class IconLabel(QWidget):
         lay.addStretch(1)
 
     def set_text(self, text: str) -> None:
+        """Đổi phần chữ của nhãn."""
         self._text.setText(text)
 
     def setText(self, text: str) -> None:  # noqa: N802 — QLabel-compatible alias
+        """Bí danh hợp chuẩn ``QLabel`` của :meth:`set_text`, để thay thế trực tiếp
+        cho một ``QLabel`` mà không phải sửa chỗ gọi.
+        """
         self._text.setText(text)
 
     def set_icon(self, name: str, color: str | None = None) -> None:
+        """Đổi icon (và màu icon) của nhãn."""
         self._icon.setPixmap(pixmap(name, self._size, color))
 
     def text_label(self) -> QLabel: