#!/usr/bin/env bash
# CHECK for the 2026-11-01 todo-census extract.
#
# What this file used to be: five lines of prose. Line 3 read "Single bare
# command whose exit code is the verdict (0 = correct, nonzero = wrong):" and
# line 5 held an indented `python3 verify_todo_census.py`. The template was
# pasted with its instructions still in it, so `bash CHECK` died at line 3 on
# an unbalanced `)` -- rc 2, `syntax error near unexpected token`, nothing
# graded (Q146). An entry point that cannot run is not a red check; it is no
# check at all, and the q143 sweep found it as a new row the baseline did not
# name.
#
# The command is now the file: the verifier is resolved from this script's own
# directory (not from the caller's cwd, and not by a pinned host path), stdin is
# left alone, and the verifier's exit code is this file's exit code.
#
# Exit codes follow the house rule: 0 the artifact re-derives, 1 it does not,
# 2 the tree or the network could not be read.

set -u

HERE="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

if [ ! -f "$HERE/verify_todo_census.py" ]; then
    printf 'CANNOT GRADE: missing %s\n' "$HERE/verify_todo_census.py"
    exit 2
fi

exec "${PYTHON:-python3}" "$HERE/verify_todo_census.py"