refactor(provisioning): remove manual SSH bootstrap workflow

pyproject.toml

@@ -19,10 +19,6 @@ select = ["E", "F", "W", "I", "B", "UP", "S"]
 # Subprocess arguments are constructed explicitly; no implicit shell execution.
 ignore = ["E401", "E501", "E702", "E741", "I001", "UP006", "UP035", "UP045", "S603", "S607"]
 
-[tool.ruff.lint.per-file-ignores]
-# These tests use synthetic paths; no fixed temporary path is written.
-"ci/scripts/init-node/tests/test_provision_transport.py" = ["S108"]
-
 [tool.mypy]
 python_version = "3.10"
 warn_return_any = true