Fix Python setup in CI

AUDIT.md

@@ -124,3 +124,14 @@ Remote runner execution, a modern-HA version matrix, dedicated lint/type checks,
 full process restart, partial platform failure and real disk-failure testing remain
 open. The test harness needed a pycares 4.11.0 pin for compatibility with HA's DNS
 dependency. Integration runtime dependencies and behavior are unchanged.
+
+
+## CI provisioning correction
+
+Remote CI reached checkout on the dedicated `bs-node` runner but failed at
+setup-python: no Python 3.13 x64 build matched the Debian Bookworm job OS. No tests
+ran in that job. The workflow now uses setup-uv v6 with uv 0.9.6 to create a seeded
+Python 3.13 virtual environment, then runs the same dependency and test checks.
+GitHub cache services are disabled and no Gitea token is supplied to setup-uv.
+The runner label and integration runtime are unchanged. Remote execution of the
+corrected workflow remains to be verified.