fix: close the six defects an independent review found in the trial fixes

Independent read-only review of c56f852..2d29966 (2026-10-08), each defect
reproduced by the reviewer; each new test fails on that code.

- test-lock green ran ANY allowlisted command: `green --cmd "git status"`
  marked a red step green and the stop guard let it stop. The lock now
  stores the step's test command (`lock --cmd`); `green` runs only that
  one (a different --cmd, or a lock without one, exits 2). trekexecute D1
  calls `green` with no command, which also removes the quoting hazard.
- plan-gate --accept-open worked at round 1 and passed the gate; it now
  refuses while rounds are left.
- findings-schema --repo-root swallowed a following flag, or took a root
  that does not exist, and silently skipped the line check: exit 2.
- brief-review-stamp hashed only the body, so a changed `framing` or
  `research_topics` stayed "current"; it now covers the reviewed
  frontmatter too (only the post-review stamps are left out).
- red-proof red_kind read an assertion message naming SyntaxError as a
  load error; the signatures are now specific.

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

docs/HANDOVER-CONTRACTS.md

@@ -76,7 +76,7 @@ Every validator exposes a CLI: `node lib/validators/<name>.mjs --json <path>` re
 | `framing` | string | **required at ≥ 2.2** (v5.5) | `preserve \| refine \| replace \| new-direction` | How this brief relates to prior operator intent. Enum-checked on any version when present; missing → `BRIEF_MISSING_FRAMING` at `brief_version ≥ 2.2`. Layer 1 of the framing-alignment defense. |
 | `intent_approved_hash` | string | optional in the schema; **required by `/trekplan`** (veikart steg 1) | `"sha256:<64 hex>"` | Hash over the normalized `## Intent` + `## Goal`. Written only by `lib/validators/intent-approval.mjs --stamp`, which `/trekbrief` runs on the operator's explicit "Approve" (Phase 4h, or `--approve <project-dir \| brief-file>`). |
 | `intent_approved_at` | string | optional | ISO-8601 | When the stamp was written. Informational; the gate reads the hash. |
-| `brief_reviewed_hash` / `brief_reviewed_at` | string | optional, additive (no `brief_version` bump) | `"sha256:<64 hex>"` / ISO-8601 | Hash over the brief's body (after the frontmatter), written by `lib/validators/brief-review-stamp.mjs --stamp` when `/trekbrief`'s brief-reviewer gate passes. `/trekplan` Phase 4b skips its own brief review only while the hash is current; absent (any other producer) or stale means it reviews. A trace, not a signature. |
+| `brief_reviewed_hash` / `brief_reviewed_at` | string | optional, additive (no `brief_version` bump) | `"sha256:<64 hex>"` / ISO-8601 | Hash over the brief's body and the frontmatter the reviewer judges (everything but this stamp and the intent marker), written by `lib/validators/brief-review-stamp.mjs --stamp` when `/trekbrief`'s brief-reviewer gate passes. `/trekplan` Phase 4b skips its own brief review only while the hash is current; absent (any other producer) or stale (body or reviewed frontmatter such as `framing` changed) means it reviews. A trace, not a signature. |
 | `ceremony` | string | optional (K1) | `small \| bounded \| architectural` | The brief's size class: sets `/trekbrief`'s question budget and review cap, and what downstream phases scale to. **Absent (or unreadable) = `architectural`**, the heaviest, so another producer's brief is never treated lighter by accident. Enum-checked when present (`BRIEF_INVALID_CEREMONY`). Read it through `briefCeremony(fm)` in `brief-validator.mjs`. |
 | `artifact_store` | string | optional | `git \| local` | Whether the brief and plan are committed to the target repo (`git`) or kept out of git through `.git/info/exclude` (`local`). The approval log is committed either way. **Absent = `local`**: nothing is published without the operator's yes. Enum-checked when present (`BRIEF_INVALID_ARTIFACT_STORE`). |
 
@@ -294,7 +294,7 @@ The strongest validation in the entire pipeline. Phase 5.5 (planning-orchestrato
 | `PLAN_MODULE_MAP_UNPARSED` | 1.8 architectural: a module-map line that looks like a link but gives no edge | Write it as `a --> b` |
 | `PLAN_ARCH_RULE_NO_ENFORCER` / `PLAN_ARCH_RULE_NO_PROOF` | 1.8 architectural: a rule without an enforcer, or a checked rule without an existing proving step | Name the enforcer; name the step |
 
-**The plan gate (K3).** `node lib/validators/plan-gate.mjs <plan.md> [--json]` decides whether a plan may go on: **0** = it validates strict, its `## Critic Verdict` matches the current text, no BLOCKER is open, and every open MAJOR was accepted by the operator; **1** = stop, with `reasons` (`PLAN_GATE_INVALID_PLAN`, `PLAN_GATE_VERSION` — below plan_version 1.8, `PLAN_GATE_NO_VERDICT`, `PLAN_GATE_VERDICT_MALFORMED`, `PLAN_GATE_VERDICT_STALE`, `PLAN_GATE_OPEN_BLOCKER`, `PLAN_GATE_ROUNDS_EXHAUSTED`, `PLAN_GATE_OPEN_MAJOR` — rounds left: revise, `PLAN_GATE_OPEN_MAJOR_FINAL` — after the last round: ask the operator) and `warnings` (`PLAN_GATE_OPEN_MAJOR` for majors the operator accepted); **2** = could not read the plan. `--hash <plan.md>` prints the operative hash; Phase 9 takes it before the reviewers read the plan. `--record <plan.md> --reviewed <hash>` reads plan-review-dedup output on stdin (which lists the reviewers that delivered, `sources`) and writes the next round; exit 2 when a reviewer is missing or the plan changed since `--hash`; it refuses round 4 (exit 1, stop and ask) unless `--extra-round` follows the operator's yes, and refuses that flag before the cap is spent. Unrated findings count as blockers. The review log is excluded from the hash only up to its first other heading, so a step placed under it is hashed. `--accept-open <plan.md>` records the operator's "build as is" for the current round's open MAJORs (`accepted_open` in the verdict block, bound to the round and the plan hash; never for a BLOCKER; exit 1 when stale, a blocker is open or no major is). Operator decision 2026-10-08: open majors used to be warnings, and a weakness the critics named was built and came back from `/trekreview` as MAJOR. plan-critic and scope-guardian rate on the review catalogue's tiers. The verdict is a trace of the review, not a signature.
+**The plan gate (K3).** `node lib/validators/plan-gate.mjs <plan.md> [--json]` decides whether a plan may go on: **0** = it validates strict, its `## Critic Verdict` matches the current text, no BLOCKER is open, and every open MAJOR was accepted by the operator; **1** = stop, with `reasons` (`PLAN_GATE_INVALID_PLAN`, `PLAN_GATE_VERSION` — below plan_version 1.8, `PLAN_GATE_NO_VERDICT`, `PLAN_GATE_VERDICT_MALFORMED`, `PLAN_GATE_VERDICT_STALE`, `PLAN_GATE_OPEN_BLOCKER`, `PLAN_GATE_ROUNDS_EXHAUSTED`, `PLAN_GATE_OPEN_MAJOR` — rounds left: revise, `PLAN_GATE_OPEN_MAJOR_FINAL` — after the last round: ask the operator) and `warnings` (`PLAN_GATE_OPEN_MAJOR` for majors the operator accepted); **2** = could not read the plan. `--hash <plan.md>` prints the operative hash; Phase 9 takes it before the reviewers read the plan. `--record <plan.md> --reviewed <hash>` reads plan-review-dedup output on stdin (which lists the reviewers that delivered, `sources`) and writes the next round; exit 2 when a reviewer is missing or the plan changed since `--hash`; it refuses round 4 (exit 1, stop and ask) unless `--extra-round` follows the operator's yes, and refuses that flag before the cap is spent. Unrated findings count as blockers. The review log is excluded from the hash only up to its first other heading, so a step placed under it is hashed. `--accept-open <plan.md>` records the operator's "build as is" for the current round's open MAJORs (`accepted_open` in the verdict block, bound to the round and the plan hash; only after the last round; never for a BLOCKER; exit 1 when rounds are left, the verdict is stale, a blocker is open or no major is). Operator decision 2026-10-08: open majors used to be warnings, and a weakness the critics named was built and came back from `/trekreview` as MAJOR. plan-critic and scope-guardian rate on the review catalogue's tiers. The verdict is a trace of the review, not a signature.
 
 **Verification CLIs that read a plan** (0/1/2, JSON on stdout, 2 is never green): `lib/verification/arch-rules.mjs --repo <dir>` runs the target repo's own dependency-cruiser or import-linter (installs nothing; `--prove --rule <name> --plant <file>=<dest>` shows pass → fail on that rule → pass, refusing a destination that exists or resolves outside the repo); `lib/verification/plan-scope-sweep.mjs --plan <plan.md> --base <ref>` lists changed files no step names (`Files:`, `Test first:` File, manifest `expected_paths`) and no process path covers.
 

docs/architecture.md

@@ -9,7 +9,7 @@ Imported from `CLAUDE.md` via pointer.
 - `lib/util/{frontmatter,result,atomic-write,autonomy-gate}.mjs` — shared YAML-frontmatter parser + Result helpers + `atomicWriteJson(path, obj)` for tmp+rename writes + autonomy-gate state machine (v3.4.0)
 - `lib/parsers/{plan-schema,manifest-yaml,project-discovery,arg-parser,bash-normalize,jaccard,finding-id}.mjs` — pure parsers (no I/O), unit-tested. `manifest-yaml` extended in v3.4.0 with additive `skip_commit_check` + `memory_write` flags (forward-compat: unknown keys ignored)
 - `lib/review/{rule-catalogue,plan-review-dedup}.mjs` — version-pinned rule catalogue (14 keys) + Phase 9 inline dedup helpers (v3.4.0)
-- `lib/review/{verdict-gate,engine-findings,recurrence}.mjs` — the review gate (K7: 0 ALLOW/WARN · 1 BLOCK · 2 never green), Claude Code `/code-review` + `/security-review` findings → reviewer payload, recurring finding classes → operator-approved project-memory lines (review_version 1.1); `lib/review/fill-finding-ids.mjs` computes the coordinator's `@@ID_<n>@@` placeholders over `(file, line, rule_key)`; `lib/validators/brief-review-stamp.mjs` lets `/trekplan` skip a brief review `/trekbrief` already ran on the same body
+- `lib/review/{verdict-gate,engine-findings,recurrence}.mjs` — the review gate (K7: 0 ALLOW/WARN · 1 BLOCK · 2 never green), Claude Code `/code-review` + `/security-review` findings → reviewer payload, recurring finding classes → operator-approved project-memory lines (review_version 1.1); `lib/review/fill-finding-ids.mjs` computes the coordinator's `@@ID_<n>@@` placeholders over `(file, line, rule_key)`; `lib/validators/brief-review-stamp.mjs` lets `/trekplan` skip a brief review `/trekbrief` already ran on the same text
 - `lib/stats/event-emit.mjs` — single-source stats event emitter for autonomy-gate transitions and main-merge-gate (v3.4.0)
 - `lib/validators/{brief,research,plan,progress,session-state}-validator.mjs` — schema validators with CLI shims (`node lib/validators/X.mjs --json <path>`)
 - `lib/validators/architecture-discovery.mjs` — drift-WARN external-contract discovery for `architecture/overview.md`