add src/rnaqwen/env/__init__.py

src/rnaqwen/env/__init__.py

@@ -0,0 +1,5 @@
+"""本机环境修补（AMD Radeon 8060S / ROCm 7.13 Windows nightly）。"""
+
+from rnaqwen.env import shim  # noqa: F401
+
+__all__ = ["shim"]