Phase 9 said 'append to ${CLAUDE_PLUGIN_DATA}/trekexecute-stats.jsonl; if it is not set, skip silently' - the Bash tool env never carries it. It now runs stats-append.mjs trekexecute with the record on stdin, the /trekbrief Phase 7 shape, and reports a written:false. The gates_mode_flag_override record was prose with no writer; it now has an event-emit block (fixed literal payload: --gates is a boolean flag) and a documented shape {ts, event, known_event, payload:{flag, signal_effort}}. Phase 8's three event blocks spliced ${PLAN_PATH} (set in an earlier Bash call that does not survive) and ${WAVE_COUNT} (never assigned) into a double-quoted payload, so a literal run printed payload-not-json, and the decline reason was operator free text in a shell argument. Payloads are now single-quoted with {plan-path} / {wave-count} placeholders and the literal label hold-for-review; each call runs on its own and a written:false is printed and passed. docs/architecture.md and the jsonl-schemas rows (writer, measured line_refs) follow.
Red: 7 of 7 new tests fail on the pre-fix text (Phase 9 writer + no 'skip silently', Phase 9 record lands, no bare ${CLAUDE_PLUGIN_DATA}/...jsonl target, no shell expansion in --payload, the three Phase 8 blocks land known events when run as written in a fresh shell, the written:false sentence, the override writer and shape).
Verify 198/198 (stats-landing, main-merge-gate, gates-flag-coverage, profile-stats-fields, plugin-root-resolution, doc-consistency, no-claude-code-launch). Suite 1383 (1381/0/2).
Voyage order 20261005T104513Z-1250514346, plan step 3/5.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Kjell Tore Guttormsen
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