ci: reduce self-hosted runner disk I/O - #207
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BobAnkh
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Jul 16, 2026
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So you can just squash all the commits and merge this pr.
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Lower disk I/O on the slow self-hosted runners (test + verify):
github-runner), dropping the per-runCache/Install LLVMsteps — a ~1 GB local copy, ~8 min on these disks. Jobs use/usr/lib/llvm-<N>viaPATH/LIBCLANG_PATH(5.4->14, else->17).CARGO_PROFILE_RELEASE_DEBUG=line-tables-only— release test binaries were ~92% DWARF; cuts write volume, keeps panic line numbers.max-parallel: 1in the test workflow.