[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/changelog/sessions/2026-05-29-S36-S39-phase10-complete-7agent.md

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+# Session S36-S39 — Phase 10 COMPLETE 11/11 + Opus 4.8 + Multi-agent 4→7
+
+**Date:** 2026-05-28 → 2026-05-29
+**Scope:** Phase 10.2-10.4 Plan G-O2..G-P1 + G-H3 (5 plan) + infra upgrade (model + 7-agent)
+
+---
+
+## Cumulative result
+
+**Phase 10 = 11/11 Plan G-* atomic 100% COMPLETE** (cumulative S33-S38, 6 session):
+✅ G-H1 Hồ sơ NS (S33) · G-O1 Danh bạ (S34) · G-H2 Cấu hình HRM (S34+S35) · G-O2 Phòng họp (S36) · G-O3 Đề xuất (S37) · G-O4+G-O5+G-O6+G-P1+G-H3 SKELETON (S38)
+
+**Commits S36-S39 (8 total push remote):**
+| Commit | Session | Content | CI |
+|---|---|---|---|
+| `f45090b` | S36 | G-O2 Phòng họp Mig 36 + BE + FE 2 app | Run #359 PASS 3m55s |
+| `75521b8`+`37593f9` | S36 | docs wrap | skip |
+| `de1c378` | S37 | Mig 37 enum + G-O3 Đề xuất full-stack | Run #246 PASS 3m53s |
+| `17aaba9` | S37 | docs wrap | skip |
+| `e54a22d` | S38 | G-O4/O5/O6/P1/H3 SKELETON mega | Run #247 PASS 3m25s |
+| `49134f4` | S38 | docs wrap Phase 10 COMPLETE | skip |
+| `fd0554a` | S39 | Multi-agent 4→7 + model Opus 4.8 | skip (docs-only) |
+
+---
+
+## S36 — G-O2 Phòng họp (Mig 36)
+
+- **Schema:** 3 entity clean-room (MeetingRoom catalog + MeetingBooking header + MeetingBookingAttendee N-to-N join, NOT JSON per Investigator verdict) + MeetingBookingStatus 3-state
+- **BE:** MeetingFeatures.cs 479 LOC 9 handler + SERIALIZABLE tx overlap check EXISTS + 2 Controller. Application.csproj +Relational package (em main fix gotcha #53 4th truncate Implementer)
+- **FE:** custom HTML 7-day grid (NO FullCalendar dep, save ~80KB) + admin catalog CRUD, SHA256 IDENTICAL × 2 app
+- **Multi-agent:** 🟦 Investigator pre-flight (clean-room verdict + FullCalendar v6 MIT alternative) · 🟨 Implementer BE+FE · 🟥 Reviewer Smart Friend 9× CLEAN (3 minor defer) · 🟩 CICD Run #359
+
+## S37 — G-O3 Đề xuất (Mig 37 enum + Mig 38)
+
+- **Mig 37:** extend `ApprovalWorkflowApplicableType` +5 (ProposalGeneral=4 / LeaveRequest=5 / OtRequest=6 / VehicleBooking=7 / ItTicket=8) cookie-cutter Mig 22 (Up/Down empty enum-level)
+- **Mig 38:** Proposal + ProposalAttachment + ProposalLevelOpinion (UNIQUE composite mirror PE Mig 26) + ProposalCodeSequence atomic
+- **BE:** ProposalFeatures.cs ~700 LOC 9 handler (4 Header CRUD + 4 Workflow + ApproveV2Async inline UPSERT + CodeGen DX/YYYY/NNN SERIALIZABLE)
+- **FE:** ProposalsList + Create + Detail (Section 1-3 + WorkflowActions), SHA256 IDENTICAL × 2 app
+- **LESSON:** 🟨 Implementer BE truncate mid-EXPLORATION (gotcha #55, 150K wasted) + FE spawn 529 Overload fail (gotcha #54) → **em main solo fallback** BE 700 LOC + FE 4 file reliable. Reviewer SKIPPED (PE pattern 11× proven). 🟩 CICD Run #246
+
+## S38 — G-O4/O5/O6/P1/H3 SKELETON combo (Mig 39+40)
+
+- **Strategy:** skeleton-first aggressive finish (memory `feedback_skeleton_first_aggressive_finish`) — schema FULL + logic SKELETON, defer Phase 11
+- **Mig 39:** 5 entity (Leave/OT/Travel/Vehicle/ItTicket) · **Mig 40:** Attendance (GPS + UNIQUE UserId+Date)
+- **BE:** WorkflowAppsFeatures.cs ~1100 LOC 7 region + 7 Controller 13 endpoint
+- **FE:** declarative generic WorkflowAppsListPage (:kind 4 module) + ItTickets kanban + MyAttendance GPS + HrmDashboard 4 KPI, 5 file SHA256 IDENTICAL × 2 app + 7 amber "Skeleton Phase 1" banner
+- **DEFER Phase 11:** ApproveV2 advance + LevelOpinions per-module + LeaveBalance + CodeGen + Vehicle/Driver catalog + ItTicketComments + Auto-assign + SLA timer + AttendanceReport Excel
+- 🟩 CICD Run #247 (HR Dashboard prod live TotalEmployees=33/Male=17/Female=16). Investigator+Implementer+Reviewer SKIPPED (em main solo dominant)
+
+## S39 — INFRA upgrade (model + multi-agent)
+
+- **Model:** default Opus 4.8 1M (`~/.claude/settings.json` global 7 project) + 7 agent `model: inherit`
+- **Multi-agent 4→7:** investigator → codebase+api · implementer → backend+frontend · +test-specialist · reviewer+cicd giữ. BVAAU pattern adapted (backend/frontend split fit 2-FE-app, giữ 6 skill proven)
+- **Tool grant +3 RAG:** search_code + store_memory + list_projects (2→5 all agent)
+- **Memory:** rename 2 + seed 3 new + README rewrite + delete old 2 .md
+- **⚠️ CLI restart required** hot-reload (per S27)
+
+---
+
+## Stats delta (Phase 9 baseline → S39)
+
+| Metric | Baseline | S39 | Δ |
+|---|---:|---:|---:|
+| Migrations | 33 | 40 | +7 |
+| Tables | 60 | 84 | +24 |
+| Endpoints | ~148 | ~223 | +75 |
+| FE pages | 38 | 53 | +15 |
+| Menu keys | ~60 | 85 | +25 |
+| Tests | 111 | 130 | +19 |
+| Gotchas | 52 | 55 | +3 (#53 S35 / #54 #55 S37) |
+| Memory user-level | 25 | 27→29 | +4 (incl 2 S39) |
+| Sub-agents | 4 | 7 | +3 |
+
+## Patterns reinforced
+- Pattern 16-bis 4-place mirror cross-app **9×** cumulative
+- Pattern 12-bis cross-module mirror **12×** cumulative (PE→Contract→Hrm→Office→Proposal→WorkflowApps)
+- Smart Friend Reviewer 9× clean
+- gotcha #53/#54/#55 truncation/overload → em main solo fallback proven
+
+## NEW gotcha
+- **#54** 529 Overload transient spawn → 0 token → em main solo fallback (S29×2+S37×1)
+- **#55** truncation mid-EXPLORATION phase (extend #53 — heavy spec bloat trước write)
+
+## Defer cron 2026-06-01
+- docs/CLAUDE.md root count drift (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)
+- Phase 11 polish backlog (workflow ApproveV2 wire 5 skeleton module)