[CLAUDE] Docs: S39 wrap — gotcha #54+#55 + STATUS/HANDOFF S39 + session log S36-S39

Session S36-S39 end wrap (docs-only, CI skip per gotcha #41):
- gotcha #54 (529 Overload spawn fail → em main solo fallback, S29×2+S37×1)
- gotcha #55 (truncation mid-EXPLORATION extend #53 — heavy spec bloat trước write)
- gotcha 53→55 + quick-ref item 29+30
- STATUS S39 header (Opus 4.8 1M + multi-agent 4→7 + budget +50%)
- HANDOFF S39 (7-agent table + ⚠️ CLI restart required + S40 recommend)
- Session log 2026-05-29 S36-S39 (Phase 10 COMPLETE 11/11 + infra upgrade)
- .gitignore +tmp/ (sub-agent JSON dumps)

Memory user-level +2 (separate, user-scope):
- feedback_7agent_split_upgrade (4→7 BVAAU adapted decision)
- feedback_skeleton_first_aggressive_finish (schema FULL + logic SKELETON pattern)

Drift defer cron 2026-06-01: docs/CLAUDE.md count + schema-diagram §15+ + RAG re-ingest S37-S39.

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

docs/HANDOFF.md

@@ -1,6 +1,43 @@
 # HANDOFF — Brief 5 phút cho session tiếp theo
 
-**Last updated:** 2026-05-28 (Session 38 — **🎊 PHASE 10 COMPLETE 11/11 Plan G-* atomic 100% DONE — SKELETON 5 plan combo deploy prod**)
+**Last updated:** 2026-05-29 (Session 39 — **⚙️ INFRA: Opus 4.8 1M default + Multi-agent 4→7 (BVAAU adapted) + budget +50%**)
+
+**S39 (2026-05-29):** Pure infra/governance — KHÔNG feature/schema. 1 commit `fd0554a` (docs-only CI skip).
+
+**⚠️⚠️ HÀNH ĐỘNG ĐẦU SESSION S40: ANH MAIN RESTART CLAUDE CODE CLI** (chưa restart S39 → registry vẫn 4 agent cũ). Post-restart verify smoke spawn 3 agent mới (investigator-api / implementer-frontend / test-specialist) confirm load OK trước khi dùng thật.
+
+**7 sub-agent mới (post-restart):**
+| Agent | Color | Scope | subagent_type |
+|---|---|---|---|
+| investigator-codebase | cyan | INTERNAL SQL/EF/grep/reference mirror | `investigator-codebase` |
+| investigator-api | blue | EXTERNAL docs/CVE/lib/cross-project | `investigator-api` |
+| implementer-backend | yellow | .NET Domain+App+Infra+Api | `implementer-backend` |
+| implementer-frontend | orange | FE 2 app cookie-cutter SHA256 mirror | `implementer-frontend` |
+| test-specialist | purple | tests/ dedicated xUnit | `test-specialist` |
+| reviewer | red | adversarial pre-commit + live curl | `reviewer` |
+| cicd-monitor | green | post-deploy Gitea + bundle + smoke | `cicd-monitor` |
+
+**Phân việc S40+ (chi tiết `.claude/agents/README.md`):** Read internal→investigator-codebase · Read external→investigator-api · WRITE .NET→implementer-backend · WRITE FE→implementer-frontend (parallel khi BE+FE independent, em main chốt DTO shape first) · test→test-specialist · pre-commit→reviewer · post-deploy→cicd-monitor. Budget +50% → lean delegate + parallel, ít em main solo (trừ schema/UX/cross-stack tight/gotcha #53-#55 fallback).
+
+**Model:** default Opus 4.8 1M (`~/.claude/settings.json` global 7 project) + 7 agent `model: inherit`. effortLevel max.
+
+**Tool grant:** all 7 agent có 5 RAG MCP (search_memory + search_code BM25 + cross_project_search + store_memory + list_projects).
+
+**2 gotcha NEW (#54 #55):** 529 Overload spawn fail → em main solo fallback · truncation mid-exploration → brief ≤8K + pre-supply reference snippet.
+
+**Memory rename:** agent-memory/ giờ 7 folder (investigator-codebase ← investigator history · implementer-backend ← implementer history · + 3 seed mới). Investigator MEMORY 32KB → cần curate đầu S40 (gotcha #53 risk).
+
+**⚠️ Drift defer cron 2026-06-01:** docs/CLAUDE.md root count (mig 33→40 · gotcha 52→55 · 4→7 agent · table 60→84) + schema-diagram §15+ (Mig 34-40 Phase 10 chưa thêm) + RAG re-ingest S37-S39 content (3076 chunks chưa có Proposal/WorkflowApps/7-agent).
+
+**Next S40 recommend (anh main pick):**
+1. **CLI restart + smoke verify 7 agent** (BẮT BUỘC first)
+2. **Curate Investigator MEMORY 32KB** (~10 phút em main proxy)
+3. **Phase 11 polish** — workflow ApproveV2 wire 5 skeleton module (Leave/OT/Travel/Vehicle + LevelOpinions) + LeaveBalance + Auto-assign + SLA timer — test-specialist write test-before bug fix
+4. **Phase 9 Ops** anh main coordinate (SMTP + Rotate creds + UAT 2-3 user 1 tuần production validation)
+5. **Test bundle coverage gap** (test-specialist: Gap 1 HrmConfig Holiday composite UNIQUE → Gap 3 gotcha #44 regression → Gap 2 EmployeeSatellite)
+6. **RAG re-ingest** S37-S39 content + cron audit 2026-06-01
+
+**Last updated S38 (prev):** 2026-05-28 (Session 38 — **🎊 PHASE 10 COMPLETE 11/11 Plan G-* atomic 100% DONE — SKELETON 5 plan combo deploy prod**)
 
 **S38 (2026-05-28):** Anh main "OK check lại plan nhé, xem còn gì ko thì finish cho xong luôn đi nhé" — em main pragmatic SKELETON aggressive 5 plan combo (G-O4+G-O5+G-O6+G-P1+G-H3) trong 1 session 1 commit mega. Cumulative end-to-end **1 commit** pushed remote `17aaba9..e54a22d` + **CI Run #247 PASS 3m25s** fastest S38 deploy.