STEP 1535 — Meta-Optimize Event Log Infrastructure v0.1

STEP 1535 · ARIS /meta-optimize 前提 layer · Rei-AIOS · 2026-08-30 · commit b49d9449f

要旨

ARIS /meta-optimize (SKILL.md 自己 patch 提案 + human gate 必須) の前提 infrastructure。 ARIS は .aris/meta/events.jsonl に skill invocation / tool call / failure / user intervention / model selection を append-only 記録し、 /meta-optimize がその log から patch 提案を生成。本 STEP は Rei 版の per-day jsonl rotation EventLogger primitive を起草 (Phase 0 = infrastructure 前提、実 event capture inject は別 STEP)。

Schema

File:   data/meta-optimize/events-<YYYY-MM-DD>.jsonl
Format: 1 event per line, JSON

MetaEvent {
  timestamp: ISO 8601 UTC
  sessionId?: string
  eventType: EventType
  subject: string   (short label = skill name / tool name / phase)
  detail: Record<string, any>   (per-eventType payload)
}

EventType 7 種:
  skill_invocation      slash command / MCP tool invoked
  tool_call             tool call attempted
  tool_failure          tool call failed (retry / fallback / error)
  user_intervention     user interrupted / redirected
  model_selection       model chosen / switched
  human_override        human judgment overrode automated decision
  convergence_signal    loop converged / diverged (future /meta-optimize primitive)

API

logger.append(eventType, subject, detail) — 1 event append (never throws、 corrupted file → auto-recover)
logger.readDate(date) — 1 日分 read (corrupted line skip)
logger.query({eventType?, since?, until?, subjectPrefix?, maxCount?}) — 期間 + filter query (default 30 日 window)
logger.convergenceCounts(opts) — convergence signal 集計 (converged/diverged/other/total)

Test coverage (22/22 PASS)

test/step1535-meta-optimize-event-log-test.ts — 6 section:

append + readDate + jsonl format verify (3 event / sessionId 保持 / per-line valid JSON)
query filters (eventType / subjectPrefix / maxCount / no filter)
Corrupted line handling (2 valid + 1 invalid → 2 returned)
Missing file → [] (readDate + query)
convergenceCounts helper (converged/diverged/other/total)
Graceful — append never throws on unwritable path

Honest scope (Phase 0 skeleton)

実 event capture point (Rei stack 内各 STEP 呼出に inject) は別 STEP defer
/meta-optimize 相当 patch 提案 generator (Claude API + event log analysis) は別 STEP defer
human gate discipline は ARIS 原則継承 = auto-apply 禁止、提案 → 別 skill (Rei では別 STEP) で human review + landing
event log size は 83 tool × 100 call/day = 8300 entry/day 想定、 per-day jsonl rotation で size 管理 (30 日 window default で query)
convergence_signal capture 実装 (Rei 側 loop 系 STEP に inject) は別 STEP

src/aios/meta-optimize/event-log.ts — infrastructure 実装 (~155 行)
test/step1535-meta-optimize-event-log-test.ts — test
STEP 1572 (fallback ledger は本 event log の先行実例)
STEP 1585 + STEP 1587 (ARIS learn-in 3 arc の姉妹)
ARIS /meta-optimize (upstream reference): SKILL.md 自己 patch 提案 + /meta-apply human gate

STEP 1535 — Meta-Optimize Event Log Infrastructure v0.1

要旨

Schema

API

Test coverage (22/22 PASS)

Honest scope (Phase 0 skeleton)

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