fix: harden review and verifier governance

scripts/review/partial_output_guard_test.sh

@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
+cd "$ROOT_DIR"
+
+TMP_DIR="$(mktemp -d)"
+trap 'rm -rf "$TMP_DIR"' EXIT
+
+BAD_FILE="$TMP_DIR/bad-output.txt"
+cat > "$BAD_FILE" <<'EOF'
+long command output line 1
+long command output line 2
+EOF
+
+set +e
+bash scripts/review/partial_output_guard.sh "$BAD_FILE" >/tmp/partial_bad.out 2>&1
+BAD_RC=$?
+set -e
+[[ "$BAD_RC" -ne 0 ]]
+grep -q 'missing conservative partial-output template' /tmp/partial_bad.out
+
+GOOD_FILE="$TMP_DIR/good-output.txt"
+cat > "$GOOD_FILE" <<'EOF'
+PARTIAL_OUTPUT_STATUS complete=false source=artifact-required conclusion=conservative
+artifact_hint=artifact://123
+EOF
+
+bash scripts/review/partial_output_guard.sh "$GOOD_FILE" >/tmp/partial_good.out 2>&1
+grep -q 'PARTIAL_OUTPUT_GUARD: PASS' /tmp/partial_good.out