Replace scripts/autotune.py's global config mutation, mutable local-repository lookup, architecture resource request, and source-tree result file with build_matrix_spec() over scripts/run-benchmark-campaign.py.
Bind each plan to the full revision, binary SHA-256, compiler, flags, harness hash, candidate-default/rank-disabled controls, and PageRank parameter profiles. Store content-addressed manifests under the ignored durable campaign root and transfer execution with os.execv so the shared runner owns isolation, resumption, logs, and cleanup.
Add tests/test_autotune.py for shared-runner plan validation, paired profile expansion, and absence of the removed resources/read, atexit, Path.home, and database-deletion paths.
Verification: uv run python -W error::ResourceWarning -m unittest tests.test_autotune (3 tests); ruff check scripts/autotune.py tests/test_autotune.py; git diff --cached --check.
Signed-off-by: Andrew Hundt <ATHundt@gmail.com>
Andrew Hundt
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