[CLAUDE] Docs: S40 session-end — HANDOFF full S40 brief + session log

- HANDOFF S40 section: full session (bulletin 4/4 + RAG recovery + concurrency warning + slash commands live)
- Session log 2026-05-29-S40 created
- Explicit git add (not -A) to avoid touching concurrent session's uncommitted BROADCAST 2 + untracked .mcp.json

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

docs/changelog/sessions/2026-05-29-S40-consolidate-bulletin-rag-recovery.md

@@ -0,0 +1,29 @@
+# Session 40 — 2026-05-29 — Init audit + doc consolidation + AI_INFRA bulletin 4/4 + RAG MCP recovery
+
+> **No product code/schema.** 10 commit `d2f52ba..37536fd` (docs/infra/governance → all CI skip per gotcha #41). Pure maintenance + infra alignment session.
+
+## Việc đã làm (theo thứ tự)
+
+1. **Init audit 10-mục** (session-start prompt): nạp context, 7-agent registry live verify (CLI restarted), RAG re-rank PASS (top 0.8789), 130 test confirm, cron audit 2026-06-01 chưa tới, AI_INFRA fleet report (7 project / ~39,798 chunks).
+2. **State grounding** (🟦 investigator-codebase): phát hiện 4/7 count documented drift. Verify lại: 40 mig (`AddAttendances` last) · **84 SQL tables** (`.ToTable()` ModelSnapshot = 77 DbSet + 7 Identity — "84 đúng", KHÔNG phải DbSet count) · ~211 endpoints · 65 FE pages (36 admin + 29 user) · ~53 menu keys · 130 test · 55 gotchas.
+3. **Doc consolidation** (anh main pick): STATUS 170KB→5.7KB + HANDOFF 224KB→3.4KB (**393KB→9KB**, full verbatim → `docs/_archive/{STATUS,HANDOFF}-preS40-fullhistory.md` zero-loss). Re-ground 4 count drift. Fix stale credential `admin@solutionerp.local`→`admin@solutions.com.vn`. CLAUDE.md root patch (33→40 mig, 60→84 table, 111→130 test).
+4. **Curate 4 agent MEMORY** >25KB→<8.4KB: investigator-codebase 35.7→7.6 · cicd-monitor 35.3→8.4 · implementer-backend 30.9→7.9 · reviewer 28.4→7.5. Foundation preserved + verbatim in git. Dedup split (FE patterns → implementer-frontend, test patterns → test-specialist).
+5. **AI_INFRA charter v2 ack** + memory `feedback_aiinfra_charter_v2` (infra = AI_INFRA owns PRIMARY, team = user + phản biện only; ranh giới §38 CƠ CHẾ vs content classification).
+6. **AI_INFRA bulletin 2026-05-29 adopt 4/4:** MỤC1 charter ack · MỤC2 Tiered Memory Policy v1 (README + 7 MEMORY header + investigator-codebase agent-def → L1/L2/L3, bỏ hard 25KB; archive/ đủ 7 agent) · MỤC3 `/session-start`+`/session-end` slash commands (`.claude/commands/`, adapt 7-agent + charter v2) · MỤC4 RAG v1.3 compliant.
+7. **rag.json extra_corpus slug BUG FIX:** sai `D--Dropbox-CONG-VIEC-SOLUTION` (thiếu `-SOLUTION-ERP`) suốt từ S30 → 27 user-memory entries CHƯA index. Fixed. Re-index = AI_INFRA op.
+8. **Broadcast AI_INFRA** (bulletin adoption + infra retrospective + 5 đề xuất + fair credit) — persistent files `docs/governance/BROADCAST-OUT-*` + RAG `store_memory` (chunk 1b7a28fc + e7703fb0, rerank 0.91-0.96 cross-project discoverable).
+
+## RAG MCP outage + recovery (lesson)
+Root cause: **máy treo full ổ C → 6 project mất MCP đồng loạt**. SE tốn ~5 lượt chẩn đoán (server.py/env/VOYAGE_API_KEY/deps/Qdrant ALL verified healthy → lỗi thuần Claude Code MCP client). **Recovery:** quit hẳn + relaunch FRESH + approve trust `.mcp.json` (KHÔNG `--resume`). AI_INFRA chuẩn hoá `.mcp.json` 6 project + runbook `rag-mcp-client-setup.md`. → memory `feedback_rag_mcp_recovery_concurrency`.
+
+## ⚠️ Concurrency (chưa giải quyết)
+Session SE **thứ 2 song song** append "BROADCAST 2" vào `BROADCAST-OUT-SOLUTION-ERP-2026-05-29.md` (uncommitted) + `.mcp.json` untracked. BROADCAST 2 có điểm hay: `search_code` vô dụng cho SE (corpus chỉ index `.md`, thiếu src/fe). Coordination decision pending anh main. **TRÁNH 2 session SE cùng sửa repo.**
+
+## Commit trail (10)
+`d2f52ba` consolidate · `78c9de3` curate MEMORY · `2839f3a` STATUS done · `6f08d1f` Tiered Memory v1 · `c8ff5e1` slash commands · `96d6df4` STATUS bulletin note · `9f10764` MỤC2+4 gaps · `894eb68` broadcast record · `e052db5` broadcast store done · `37536fd` infra retrospective
+
+## Sub-agent ROI
+3 spawn cho init audit (🟦 investigator-codebase `a4ddb2ab` state grounding + 🟪 test-specialist `a3d4f4511` test baseline + 🟦 investigator-api `ac4d5096` RAG fleet). Phần còn lại (consolidation/curate/bulletin/broadcast) em main solo (docs/infra, no delegate needed). 4 agent kia (implementer-backend/frontend, reviewer, cicd-monitor) KHÔNG spawn — no product work.
+
+## Next S41 → FOCUS PRODUCT
+Phase 11 P11-A (wire ApproveV2 4 module) / Test gaps (Gap1 Holiday UNIQUE + Gap3 gotcha #44) / Phase 9 Ops. + giải quyết concurrency.