{
  "title": "Clear arch_cpu.sh from the shell coverage allowlist",
  "objective": "Bring arch_cpu.sh to 100% measured line coverage through tests/run_all.sh and remove its allowlist exemption, taking the allowlist from 91 entries to 90.",
  "acceptance_criteria": [
    "The jail reports arch_cpu.sh at 100.00% measured through tests/run_all.sh, not through a single test file.",
    "A second measurement at --min 100 exits 0, so a shortfall would be a non-zero exit rather than a number to read.",
    "With the allowlist line removed, check_shell_coverage.sh on arch_cpu.sh prints 'every checked shell library meets the coverage bar'.",
    "Both functions are covered across every branch: no cpufreq at all, all cores already tuned, a mixed set where only some cores lag, cpupower absent, cpupower present and unconfigured, cpupower already configured, and all three I/O scheduler targets (none for NVMe, mq-deadline for SSD, bfq for HDD).",
    "arch_cpu.sh's production behaviour is unchanged: every new override defaults to the real path it replaced.",
    "The whole suite stays green and shellcheck reports nothing, with zero suppressions."
  ],
  "out_of_scope": [
    "arch_sysctl.sh's kcov registration failure, which is tracked separately and stays on the allowlist.",
    "Changing the coverage instrument, which is scheduled after the eight libs.",
    "arch_hardware.sh, the third lib of this family, which reuses this harness in a later commit."
  ],
  "verifier": "timeout 900s bash meta/scripts/shell_coverage_jail.sh --subject linux_configuration/scripts/single_use/fixes/lib/tests/run_all.sh --measure arch_cpu.sh --min 100 --fail-on-case-error -- \"\" (expects 57/57 = 100.00%, exit 0), followed by bash meta/scripts/check_shell_coverage.sh on the lib with its allowlist line removed."
}