{
  "intent": "Replace NEXT_SESSION_PROMPT.md with a brief that reflects what this session actually found, including three of its own instructions that turned out to be wrong.",
  "scope": [
    "NEXT_SESSION_PROMPT.md - rewritten, 295 lines down to 249",
    "Non-goal: doing any of the §3 or §4 work the new brief describes."
  ],
  "changes": [
    "Made the stdin-drain rule a PROHIBITION at the top rather than an observation. The old brief's standing decision reads '100% line coverage, always'; the repo now contains five deliberately-uncovered lines in daemon_apps.sh, and a reader following that rule literally would pipe them and reintroduce a measured 1-of-54 bug in the code that decides which apps get disabled. The file and line numbers are named, and mapfile is given as the only safe alternative.",
    "Corrected the config.sh fingerprint recipe and baseline. The old one (asdict + json.dumps(default=str), baseline 1624750c) cannot work: four policy fields are frozenset, serialised in per-process iteration order. Replaced with the repo's own deterministic exporter and baseline 83e05e82, plus the sourced-environment diff, because the hash alone passed clean through both bugs hit this session.",
    "Removed the claim that extract_shell_functions.py reliably places its source line. It got the position wrong three times, in three different ways, each of which produced a working-looking file that was broken.",
    "Added the kcov artifact taxonomy with an explicit safe/unsafe column, the mutation tooling and the rule that an equivalent mutation means dead code to delete, and the two live hazards phone_focus_mode now carries.",
    "Re-enumerated the over-cap list (22 -> 15) and dropped the fully-consumed §2 table."
  ],
  "verification": [
    {
      "command": "wc -l NEXT_SESSION_PROMPT.md",
      "result": "pass",
      "evidence": "249 lines, under the 250 cap. The old brief was 295 and counted itself among the over-cap files; check_file_length.sh skips .md, so this would not have been caught by the gate."
    },
    {
      "command": "bash meta/scripts/shell_coverage.sh phone_focus_mode/lib/tests/test_daemon_libs.sh daemon_apps.sh 0",
      "result": "pass",
      "evidence": "Confirms the brief's claim exactly: 71/76 = 93.42%, uncovered 35, 60, 110, 130, 158 — the five line numbers the prohibition names."
    },
    {
      "command": "wc -l phone_focus_mode/config.sh",
      "result": "pass",
      "evidence": "250, confirming the brief's 'exactly 250 with no headroom' warning."
    },
    {
      "command": "count of mutations across meta/scripts/fixtures/mutations/*.json",
      "result": "pass",
      "evidence": "120 across six specs (13+22+17+33+17+18). The first draft said 127 from memory; counted and corrected before committing, since a wrong number in a handoff undermines the instructions around it."
    },
    {
      "command": "grep -c '6371000' across phone_focus_mode/",
      "result": "pass",
      "evidence": "TWO copies of the Haversine, not three: daemon_location.sh (the original, moved out of focus_daemon.sh) and ctl_daemon.sh. An earlier commit message called it a third copy by double-counting the move; the brief records the verified count."
    },
    {
      "command": "npx prettier --write NEXT_SESSION_PROMPT.md",
      "result": "pass",
      "evidence": "Clean; prettier runs on pre-push and would otherwise reformat it there."
    }
  ],
  "risks": [
    "The brief is at 249 of 250 lines, so the next person to add a finding has to remove one. Detail was pushed into the evidence files it references rather than inlined, which means it is one indirection away.",
    "The stdin prohibition depends on line numbers in daemon_apps.sh staying accurate. Any edit that shifts them makes the table wrong; the three mutations pinning those loops are the durable guard, and the brief names them."
  ],
  "rollback": [
    "git revert the commit to restore the previous brief. Note that doing so restores the broken config.sh fingerprint recipe and the missing stdin prohibition, so prefer editing forward.",
    "After rollback, confirm with wc -l NEXT_SESSION_PROMPT.md that the file is back to 295 lines."
  ]
}