fix(reviewer-runtime): cover timeout and exit semantics

skills/reviewer-runtime/run-review.sh

@@ -5,6 +5,8 @@ DEFAULT_POLL_SECONDS=10
 DEFAULT_SOFT_TIMEOUT_SECONDS=600
 DEFAULT_STALL_WARNING_SECONDS=300
 DEFAULT_HARD_TIMEOUT_SECONDS=1800
+EXIT_COMPLETED_EMPTY_OUTPUT=80
+EXIT_NEEDS_OPERATOR_DECISION=81
 
 COMMAND_FILE=""
 STDOUT_FILE=""
@@ -271,7 +273,7 @@ main() {
       append_status error needs-operator-decision "hard timeout reached; terminating reviewer child for operator intervention"
       kill_child_process_group
       trap - EXIT
-      exit 12
+      exit "$EXIT_NEEDS_OPERATOR_DECISION"
     fi
   done
 
@@ -293,7 +295,7 @@ main() {
     fi
 
     append_status error completed-empty-output "reviewer exited successfully with empty stdout"
-    exit 10
+    exit "$EXIT_COMPLETED_EMPTY_OUTPUT"
   fi
 
   append_status error failed "reviewer exited with code $child_exit_code"

skills/reviewer-runtime/tests/smoke-test.sh

@@ -12,7 +12,7 @@ fail() {
 assert_file_contains() {
   local file=$1
   local pattern=$2
-  if ! rg -q --fixed-strings "$pattern" "$file"; then
+  if ! grep -qF "$pattern" "$file"; then
     echo "Expected pattern not found: $pattern" >&2
     echo "--- $file ---" >&2
     sed -n '1,200p' "$file" >&2 || true
@@ -142,7 +142,7 @@ exit 7
     local exit_code=$?
   fi
 
-  assert_nonzero_exit "$exit_code"
+  assert_exit_code "$exit_code" 7
   assert_file_contains "$stderr_file" "boom"
   assert_file_contains "$status_file" "state=failed"
 }
@@ -218,6 +218,31 @@ sleep 30
   fi
 }
 
+test_hard_timeout_escalation() {
+  local dir=$1
+  local command_file=$dir/hard-timeout.sh
+  local stdout_file=$dir/hard-timeout.stdout
+  local stderr_file=$dir/hard-timeout.stderr
+  local status_file=$dir/hard-timeout.status
+
+  make_command "$command_file" '
+sleep 30
+'
+
+  if run_helper "$command_file" "$stdout_file" "$stderr_file" "$status_file" \
+    --poll-seconds 1 \
+    --soft-timeout-seconds 2 \
+    --stall-warning-seconds 2 \
+    --hard-timeout-seconds 4; then
+    local exit_code=0
+  else
+    local exit_code=$?
+  fi
+
+  assert_exit_code "$exit_code" 81
+  assert_file_contains "$status_file" "state=needs-operator-decision"
+}
+
 main() {
   [[ -x "$HELPER_PATH" ]] || fail "helper is not executable: $HELPER_PATH"
 
@@ -230,6 +255,7 @@ main() {
   test_nonzero_failure "$tmp_dir"
   test_empty_output_is_terminal "$tmp_dir"
   test_signal_cleanup "$tmp_dir"
+  test_hard_timeout_escalation "$tmp_dir"
 
   echo "PASS: reviewer runtime smoke tests"
 }