{
  "title": "Split focus_ctl.sh, the largest file in phone_focus_mode",
  "objective": "Take focus_ctl.sh from 1091 lines to under the repo's 250-line cap by extracting one library per enforcer, and give the extracted logic its first tests. This must land BEFORE deploy.sh is split, because it grows deploy.sh's two hardcoded lists.",
  "acceptance_criteria": [
    "bash meta/scripts/check_file_length.sh --all no longer lists phone_focus_mode/focus_ctl.sh, and no new file is over the cap.",
    "Every stdin-draining while-read loop is identified before extraction and moved verbatim; none is converted to a pipe.",
    "meta/scripts/verify_shell_split.sh reports every function moved verbatim.",
    "All eight siblings are added to BOTH of deploy.sh's hardcoded lists, and the lists stay in exact correspondence.",
    "A mutation spec lands in meta/scripts/fixtures/mutations/ and kills every mutation, including the escape-hatch commands and the third copy of the Haversine.",
    "Any mutation that proves equivalent is resolved by deleting the dead code, not by weakening the mutation or adding a test that cannot fail.",
    "shellcheck passes on each touched file individually; sh -n passes on every phone-side script.",
    "jscpd stays under its 2% threshold, measured in a clean worktree so vendored .venv does not pollute the figure."
  ],
  "out_of_scope": [
    "Deploying to the phone or verifying on-device.",
    "Splitting deploy.sh, which is the next item and must come after this one.",
    "De-duplicating ctl_is_curfew_now against daemon_location.sh's is_curfew_now, or the third Haversine copy in cmd_status — both are recorded as drift hazards for a later session.",
    "Reaching 100% line coverage on the cmd_* subcommands, which would require modelling far more device behaviour than the split itself warrants."
  ],
  "verifier": "bash phone_focus_mode/lib/tests/test_ctl_libs.sh (expects 136 passed, 0 failed), plus python3 meta/scripts/mutate_shell.py meta/scripts/fixtures/mutations/ctl_libs.json at 22 killed / 0 not killed, plus check_file_length.sh --all showing 16 files, plus deploy-list parity, plus jscpd under 2%, plus pre-commit run --files on the touched files."
}