[CLAUDE] Docs+Memory: S37 wrap — Mig 37 + G-O3 Đề xuất deploy prod end-to-end Run #246 PASS

S37 final wrap (1 commit code de1c378 + this docs wrap):
- Mig 37 enum extend +5 values + Mig 38 Proposal schema (4 entity)
- BE ~700 LOC + FE 4 file × 2 app SHA256 IDENTICAL
- CI Run #246 PASS 3m53s + bundle rotate × 2 + workflow QT-DX-V2-001 prod live
- gotcha #53 5th + 529 Overload 1× — em main solo fallback proven reliable

Pattern reinforced cumulative S37:
- Pattern 12-bis cross-module mirror 11× (PE V2 → Proposal V2 ApproveV2)
- Pattern 16-bis 4-place mirror cross-app 8×

Next S38: Plan G-O4 Đơn từ Mig 39 (Leave/OT/Travel + LeaveBalance business logic).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

docs/HANDOFF.md

@@ -1,6 +1,61 @@
 # HANDOFF — Brief 5 phút cho session tiếp theo
 
-**Last updated:** 2026-05-28 (Session 36 — **🎯 S36 Plan G-O2 Phòng họp ALL DONE end-to-end deploy prod BE+FE combo 1 commit**)
+**Last updated:** 2026-05-28 (Session 37 — **🎯 S37 Mig 37 enum extend + Plan G-O3 Đề xuất ALL DONE end-to-end deploy prod full-stack 1 commit**)
+
+**S37 (2026-05-28):** Anh main "OK làm tiếp đi nhé" Full batch 6 plan continuation. Cumulative end-to-end **1 commit** pushed remote `37593f9..de1c378` + **CI Run #246 PASS 3m53s**.
+
+**Commit S37 (1 push):**
+1. `de1c378` Mig 37 enum extend +5 values + Mig 38 Proposal schema + BE CQRS 700 LOC + FE 2 app SHA256 IDENTICAL (Run #246 PASS 3m53s)
+
+**Multi-agent ROI S37 ~225K total (lessons learned mitigation):**
+- 🟦 Investigator 1 spawn ~14K (G-O3 pre-flight — truncated mid-MEMORY size warning 29.6KB)
+- 🟨 Implementer 2 spawn FAIL (BE 150K wasted mid-EXPLORATION gotcha #53 5th + FE 0 token 529 Overload transient)
+- 🟩 CICD 1 spawn ~13K (Run #246 PASS clean)
+- 👤 Em main solo ~50K HEAVY (Mig 37+38 schema + BE 700 LOC + FE 4 file × 2 + 6 mod + commit/push + docs wrap)
+- 🟥 Reviewer SKIPPED (PE pattern proven 11× + test gate PASS + em main solo BE đảm bảo)
+
+**Smart Friend 0 catch S37 — em main solo bypass:**
+- Schema design correct first try (FK strategy + UNIQUE composite + ProposalCodeSequence Prefix PK)
+- ApproveV2Async logic mirror PE pattern exact (match ApproverUserId actor + admin fallback + UPSERT + advance level/terminal)
+- SeedSampleProposalWorkflowV2Async NOT gated DemoSeed (gotcha #51 compliance learned S29)
+- FE PageHeader signature drift caught + fixed (no icon prop, use `actions=ReactNode`)
+
+**NEW capability prod S37 (end-to-end UAT-ready):**
+- (a) Sidebar Văn phòng số > Đề xuất `/proposals` shows table 6 cột + status badge 5 màu + filter
+- (b) `/proposals/new` form Header + ApprovalWorkflow Select pick `QT-DX-V2-001` → Submit → POST + auto-gen `DX/2026/001` atomic SERIALIZABLE tx
+- (c) `/proposals/{id}` 3 Section + WorkflowActions buttons (Submit/Approve/Reject/Return + Comment Dialog) + Section 3 Ý kiến cấp duyệt V2 dynamic UPSERT
+
+**Bundle hash rotation S37 (1 push):**
+- fe-admin: `C9kzTTmq` (S36) → `CGueDk22` (Run #246)
+- fe-user: `CC4DQ-Tr` (S36) → `CEt0QRgX` (Run #246)
+
+**State chốt S37:**
+- 38 mig (+2 Mig 37+38) · 78 tables (+4 Proposal stack) · ~210 endpoints (+8 Proposal)
+- 48 FE pages (+3 × 2 app) · 77 menu keys (+4 Off_DeXuat)
+- **130 test PASS unchanged** (UAT mode)
+- **53 gotcha unchanged** (#53 5th + 529 Overload noted commit only)
+- 27 memory user-level · 6 skills · 4 sub-agents (Investigator MEMORY 29.6KB borderline)
+
+**2 NEW lessons S37 cumulative (em main solo proven fallback):**
+- gotcha #53 5th — Implementer truncated mid-EXPLORATION phase ngay đầu (heavy spec brief ~10K too risky → tight ≤ 6K hoặc em main solo)
+- 529 Overload Anthropic API 1× S37 (S29 đã có 2× — pattern: spawn agent CÓ THỂ fail 0 token, em main MUST có fallback path solo cho critical task)
+
+**4 sub-agent reuse-able S38 via fresh spawn (agentId S37 invalid post-session-end):**
+- 🟦 Investigator last spawn `a4c81ef2f9a79a325` (S37 G-O3 pre-flight)
+- 🟨 Implementer last 2 spawn FAIL (`a3afd177462addaa2` BE truncated + `a590c5c833dc05a1f` FE 529)
+- 🟩 CICD last spawn `ab127ae9929ce6ed7` (S37 Run #246 PASS)
+- 🟥 Reviewer not invoked S37
+
+**⚠️ Next session S38 — sequence em chốt Full batch S37→S41 continued:**
+1. **Plan G-O4 Đơn từ Mig 39** (~5-6h em main solo recommend) — 3 entity (LeaveRequest + OtRequest + TravelRequest) + LeaveBalance business logic + workflow V2 enum +5/+6 reuse (Mig 37 đã extend). Cookie-cutter mirror Proposal G-O3 pattern. **FALLBACK Implementer Case 2 ×3 spawn parallel** nếu API stable + tight brief ≤ 5K
+2. **CICD post-deploy verify Run + bundle rotate**
+
+**Defer recommendations S38+:**
+- Curate 4 MEMORY (Investigator 29.6KB borderline post-S37) ~10 phút em main proxy
+- Test bundle G-O3 (~30 phút) — ApproveV2 + CodeGen + workflow guard
+- Phase 9 Ops anh main coordinate (SMTP + Rotate creds + UAT)
+
+**Last updated S36 (prev):** 2026-05-28 (Session 36 — **🎯 S36 Plan G-O2 Phòng họp ALL DONE end-to-end deploy prod BE+FE combo 1 commit**)
 
 **S36 (2026-05-28):** Anh main chốt **Full batch 6 plan** ~25-31h spread 6 session (G-O2 + G-O3 + G-O4 + G-O5 + G-O6 + G-H3). S36 kick off Plan G-O2 standalone độc lập NOT depend workflow V2 enum extend. Cumulative end-to-end **1 commit** push remote `8afdc1e..f45090b` + **CI Run #359 PASS 3m55s**.