test(proevesett): a case for the intent gate; case 5's error comes from code; graders see what they claim

New case plan-halts-without-intent-approval (expectation committed before
its first run): a 2.1 brief WITH phase_signals and no intent marker.
Graders: intent-approval.mjs --check ran; the trace carries the gate's own
JSON code for BRIEF_INTENT_NOT_APPROVED; no Agent; no plan.md.

review-requires-project: the arg parser now has a CLI that checks the
required flag and prints 'Error: --project <dir> is required.' + usage
(exit 1, code ARG_REQUIRED_MISSING). trekreview.md runs it with
$ARGUMENTS (it passed "$@", which the Bash tool never has, so the parser
never ran — 0 Bash calls in the PM's case-5 traces) and relays its stderr
instead of composing the line. The grader project-required (reply regex,
unstable on backticks) is replaced by parser-ran + names-missing-project
(trace, the parser's JSON code), the same form as names-rule.

Graders: no-error-code is bound to the validator's JSON output form and
covers every REVIEW_* code (WRONG_TYPE and VERSION_FORMAT were missing);
says-pass/says-fail reject a preceding NOT and a longer word; every case
with no-write also gets no-bash-write (redirect, tee, touch, cp, mv, rm,
sed -i in the Bash command). Checked on the PM's 10 recorded traces: no
false positive; known-positive/negative still split.

Red 348aa95 6/7 → green 7/7. Suite 1231: 1229 pass / 0 fail / 2 skip.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

commands/trekreview.md

@@ -34,12 +34,16 @@ command executes inline.
 
 ## Phase 1 — Parse mode and validate input
 
-Parse `$ARGUMENTS` via the shared arg-parser:
+Parse the arguments with the shared arg-parser. Run it first, exactly like
+this, before anything else:
 
 ```bash
-node ${CLAUDE_PLUGIN_ROOT}/lib/parsers/arg-parser.mjs --command trekreview "$@"
+node ${CLAUDE_PLUGIN_ROOT}/lib/parsers/arg-parser.mjs --command trekreview -- $ARGUMENTS
 ```
 
+It prints the parse as JSON on stdout. It also checks the required flag
+itself: on exit 1 it has printed the error and usage lines on stderr.
+
 The parser recognizes these flags (see `lib/parsers/arg-parser.mjs`
 FLAG_SCHEMA `trekreview` entry):
 
@@ -54,11 +58,9 @@ FLAG_SCHEMA `trekreview` entry):
 | `--workflow` | boolean | **(opt-in, NW2)** Run Phase 5–6 on the bake-off-validated Workflow substrate (`scripts/trekreview-armB.workflow.mjs`) instead of the default prose Agent-tool path. Requires **Claude Code 2.1.154+**. Combines with `--quick`. See *§ Phase 5–6 via the Workflow substrate*. |
 
 Resolution:
-1. If `--project` is missing, print usage and stop:
-   ```
-   Error: --project <dir> is required.
-   Usage: /trekreview --project <dir> [--since <ref>] [--quick] [--validate] [--dry-run]
-   ```
+1. If the parser exits 1 (for example `--project` is missing), print its
+   stderr lines verbatim, exactly as the parser wrote them, and stop. Do not
+   compose the error message yourself.
 2. Trim trailing slash from `{dir}`. Set:
    - `project_dir = {dir}`
    - `brief_path = {dir}/brief.md`