#!/usr/bin/env bash
# bench/architect_sweeps.sh
#
# Run the four design-md-consolidation sweep-invariant greps against
# docs/DESIGN.md. Output: matched lines, prefixed by sweep name. Exit 0
# if all four sweeps are clean, 1 if any anchor was found.
#
# Companion to skills/audit/agents/ailang-architect.md "What you check
# / DESIGN.md history-anchor regrowth". See JOURNAL 2026-05-10
# ("Milestone close: design-md-consolidation") for the rationale of
# each sweep regex; the regexes here are copied verbatim from JOURNAL
# entries 12487 (Sweep 1), 12619 (Sweep 2), 12718-12720 (Sweep 3),
# and 12840 (Sweep 4).
#
# A non-zero exit is advisory, not authoritative: the architect agent
# reviews each match and decides whether it is a legitimate quote
# (e.g. a JOURNAL citation inside a block-quote) or fresh drift.

set -u
DESIGN="docs/DESIGN.md"
HITS=0

if [[ ! -f "$DESIGN" ]]; then
    echo "architect_sweeps: $DESIGN not found (run from repo root)" >&2
    exit 2
fi

run_sweep() {
    local name="$1"
    local pattern="$2"
    local matches
    matches=$(grep -nE "$pattern" "$DESIGN" || true)
    if [[ -n "$matches" ]]; then
        echo "=== Sweep: $name ==="
        echo "$matches"
        echo
        HITS=1
    fi
}

run_sweep "1 (history anchors)" \
    'Iter [0-9]+[a-z]?(\.[0-9]+)?|Family [0-9]+|^[^/]*2026-[0-9]{2}-[0-9]{2}|\*\*Status: |pre-[0-9]+[a-z]?|[0-9]+[a-z]? sketch|21\.g'

run_sweep "2 (REVERTED + migration)" \
    'REVERTED|preserved for the audit trail|Migration plan|[Oo]riginally framed|original rationale|empirically-grounded version|A future (iter|iteration|milestone|Prelude) may|A future iter that|a (later|future) iter(ation)? \(deferred\)|Concrete design deferred'

run_sweep "3 (schema SoT)" \
    '^\s*(struct |enum |pub (struct|enum|fn))|whenever the two disagree|ast\.rs is the source of truth'

run_sweep "4 (workflow + stale cross-references)" \
    'agents/README\.md|ailang-docwriter|Recently lifted|see the JOURNAL queue|later the same day|Sharpened later|closure conversion in JOURNAL'

if [[ $HITS -eq 0 ]]; then
    echo "All four sweeps clean."
fi
exit $HITS