fix: round 6 of the release review of 6.3.0

Round 6 (v6.2.0..c3641ff, WARN: 11 MAJOR, 3 MINOR; 0 BLOCKER). The round-5
fixes hold (code-correctness-reviewer); three of the new MAJOR were side
effects of running checks with no shell. Each fixed behind a test that
failed first on c3641ff.

- git checks stay in the repo too: no path that climbs out with .., starts
  at / or reads <rev>:../x, and no --no-index (both reviewers).
- A trailing `# comment` on a shell-fence line is dropped: with no shell,
  its words made an honest check NOT RUN, among them the first check of the
  shipped example plan.
- A glob reaches `node --test` only on Node 21 and later, which expands it
  itself; on an older Node it is refused with that reason (engines >=18).
- With no shell, exit 126/127 is the test program's own: red proof reads it
  as a red (the control run still tells an environment fault apart), the
  done line and the test lock as a failure.
- A runner that could not start (not installed) is NOT RUN in the criteria
  runner and not-run (exit 2) in regression-check, as red-proof and
  done-line already said; never a red suite.
- Tests-only: a backticked `Makefile` alone in its entry is a path, and red
  proof confirms the plan's tests-only reading against the step's own diff
  (the altitude finding: the diff is a fact, the Files: prose is not).
- release-check stops a suite that never ends (15 minutes) and reads it as
  not measured (exit 2).
- The two lines this release added to pre-bash-executor.mjs are ASCII.
- MINOR: git and the other runners share one plain-word pattern.

Not in this round: MINOR f00a2eb8 (shared norm/ticked-path and isMain
helpers) and MINOR on plan-review-dedup's repeated tokenizing.

Suite 2194 (2192/0/2).

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

tests/fixtures/jsonl-schemas.md

@@ -22,7 +22,7 @@
 | trekbrief-stats | ts, task, slug, mode, interview_turns, review_iterations, brief_quality, research_topics, auto_research, auto_result, intent_approved, project_dir, order_id, order_claimed_at, order_reason | commands/trekbrief.md (orchestrator-emit Phase 7; order_* added by lib/stats/stats-append.mjs) | trekbrief.md:1130-1145 | profile, phase_models, profile_source | none |
 | trekresearch-stats | ts, question, mode, scope, engine, slug, project_dir, brief_path, dimensions, dimensions_baseline, dimensions_baseline_preserved, effort, conv_turns, empty_turns, unique_sources, agents_local, agents_external, gemini_used, confidence, contradictions, open_questions | lib/stats/stats-append.mjs (trekresearch.md Stats tracking) | trekresearch.md:782-808 | profile, phase_models, parallel_agents, external_research_enabled, profile_source | none |
 | trekplan-stats | ts, task, mode, slug, brief_path, project_dir, codebase_size, codebase_files, agents_deployed, deep_dives, research_briefs_used, research_scout_used, critic_verdict, guardian_verdict, outcome | lib/stats/stats-append.mjs (trekplan.md Phase 12) | trekplan.md:1115-1135 | profile, phase_models, parallel_agents, profile_source | none |
-| trekexecute-stats (Phase 9 record) | ts, plan, plan_type, mode, result, steps_total, steps_passed, steps_failed, steps_skipped, failed_at_step | lib/stats/stats-append.mjs (trekexecute.md Phase 9) | trekexecute.md:2891-2913 | profile, phase_models, profile_source | none |
+| trekexecute-stats (Phase 9 record) | ts, plan, plan_type, mode, result, steps_total, steps_passed, steps_failed, steps_skipped, failed_at_step | lib/stats/stats-append.mjs (trekexecute.md Phase 9) | trekexecute.md:2892-2914 | profile, phase_models, profile_source | none |
 | trekexecute-stats (autonomy events) | ts, event, known_event, payload | lib/stats/event-emit.mjs `emit()` | event-emit.mjs:78-99 | payload.profile, payload.phase_models, payload.profile_source | none |
 | trekexecute-stats (PostToolUse Bash) | ts, session_id, command_excerpt, duration_ms, success | hooks/scripts/post-bash-stats.mjs (Bash PostToolUse) | post-bash-stats.mjs:42-54 | none (hook is plugin-level, not profile-aware) | command_excerpt (CWE-212) |
 | trekreview-stats | ts, slug, verdict, counts (BLOCKER/MAJOR/MINOR/SUGGESTION), reviewed_files_count, mode, duration_ms | lib/stats/stats-append.mjs (trekreview.md Phase 8) | trekreview.md:628-632 | profile, phase_models, profile_source | none |