merge: merge origin/gamma/refactor and origin/feature/teamhoa/r05-r06 into feature/delta-team/epic-R04

domain/__init__.py

@@ -1 +1,11 @@
-"""domain/ — Quy tắc nghiệp vụ thuần. KHÔNG import PySide6, không chạm đĩa/mạng."""
+"""Domain layer - pure Python entities, value objects and events.
+
+The innermost layer of the 4-tier architecture (see
+``docs/architecture/ADR-001-layered-architecture.md``). Modules here describe
+WHAT the application is about - a turn of conversation, a model candidate, an
+agent event - and depend on nothing but the standard library.
+
+Hard rule (ADR-001 I1/I2, enforced by ``scripts/check_imports.py``): no imports
+of PySide6/PyQt, and no imports from ``application/``, ``infrastructure/``,
+``presentation/`` or the legacy ``core/``/``ui/`` packages.
+"""