[CLAUDE] Docs: chốt session 4 — Budget BE module + 14 Solutions users

- STATUS.md: header Phase 7 + 3 row Recently Done (Budget BE / 14 users / Docs cleanup) + cumulative cột mới (51 tables / 14 mig / ~124 endpoints)
- HANDOFF.md: TL;DR session 4 (2 milestone Budget BE + 14 users) + Cảnh báo session 5 + Priority 0 (FE Budget + PE/HD integration + PE feature gap) + Credentials 30 user
- migration-todos.md: Phase 7 thêm section D Budget done + Phase 8 mới (FE Budget pages + integration) + pending migrations Budget
- architecture.md: §10 Budget module mới (ERD + state machine + auto-recompute + integration roadmap)
- database/schema-diagram.md: migration history rows 13+14 + §12 Budget ERD chi tiết
- ef-core-migration SKILL: migration 14 entry + Phase 8 pending Budget refinement
- CLAUDE.md root + docs: modules table thêm Budget row + scope Budget + count 51 bảng / 14 mig
- Session log 2026-04-28-chot-session-4-budget.md (10+ section detailed)

Stats: 51 tables (+4 Budget), 14 migrations (+AddBudgets), ~124 endpoints (+11 Budget),
30 demo user (16 sample + 14 Solutions thật), 38 gotchas, ~340 LOC Budget CQRS.
FE Budget pages chưa làm — Priority 0 session 5.

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

docs/CLAUDE.md

@@ -10,6 +10,7 @@
 3. Tự gen mã HĐ theo Quy định SOL-CCM-RG-001
 4. Dashboard báo cáo HĐ theo NCC, dự án, trạng thái, giá trị
 5. **Module Duyệt NCC (Phase 6)** — phiếu trình duyệt so sánh giá tiền-HĐ, 2 quy trình A/B, kế thừa HĐ 1-click khi DaDuyet
+6. **Module Ngân sách (Phase 7)** — 4 bảng quản lý ngân sách dự án, workflow simple 3-step, link nullable Contract & PE để đối chiếu chi phí
 
 ## 2. Kiến trúc tổng thể
 
@@ -59,13 +60,13 @@ SOLUTION_ERP/
 │   ├── HANDOFF.md                  ⭐ brief 5 phút cho session tiếp
 │   ├── PROJECT-MAP.md              bản đồ tổng quan
 │   ├── rules.md                    coding conventions
-│   ├── architecture.md             layered + PE module §9
+│   ├── architecture.md             layered + PE §9 + Budget §10
 │   ├── gotchas.md                  38 pitfall đã gặp
 │   ├── forms-spec.md               8 form catalog + RG-001
 │   ├── workflow-contract.md        9 phase HĐ + role matrix
 │   ├── database/
 │   │   ├── database-guide.md       conventions + migration workflow
-│   │   └── schema-diagram.md       ERD 47 bảng (+§11 PE)
+│   │   └── schema-diagram.md       ERD 51 bảng (+§11 PE +§12 Budget)
 │   ├── flows/                      6 sequence diagram (auth/permission/contract/form/sla + PE ref architecture)
 │   ├── guides/                     setup, cicd, deploy, runbook, security
 │   ├── changelog/
@@ -106,7 +107,7 @@ SOLUTION_ERP/
 - **NamGroup** (`D:\Dropbox\CONG_VIEC\NAMGROUP\SOURCECODE_CÔNG_TY\NAMGROUP\`) — template 2 FE + IIS deploy + permission matrix
 - **DH_Y_DUOC** (`D:\Dropbox\CONG_VIEC\DAI_Y_DUOC\DH_Y_DUOC_SOURCECODE\DH_Y_DUOC\`) — template backend hiện đại (Clean Arch + CQRS + EF migrations)
 
-## 6. Roadmap (status 2026-04-24)
+## 6. Roadmap (status 2026-04-28)
 
 | Phase | Focus | Trạng thái |
 |---|---|---|
@@ -118,8 +119,10 @@ SOLUTION_ERP/
 | **5 Production** | CI/CD Gitea Actions + 3 IIS site + Let's Encrypt + Security headers + Users CRUD | ✅ Done |
 | **Tier 3** | Versioned WF + 3-panel layout + 4-bảng + 4 catalogs + 16 demo users + Brand identity | ✅ Done |
 | **6 Module Duyệt NCC** | PE iter 1 (skeleton) + iter 2 (UX polish) + Domain rebrand `.solutions.com.vn` | ✅ Done |
-| **7 PE feature gap** | Designer UI + Ý kiến 4 phòng ban + Export PDF + UAT thật + SMTP | 📝 WIP |
-| **8+ Post-launch** | E-signature, Bravo/SAP, Mobile, AI OCR | 📝 Future |
+| **7 Budget BE + 14 Solutions users** | Migration 14 — 4 bảng Budget + workflow simple + 11 endpoint + 14 user thật | ✅ Done (Session 4) |
+| **8 Budget FE + PE/HD integration** | FE Budget pages + link select Budget vào PE/Contract form | 📝 Active (Session 5) |
+| **PE feature gap** | Designer UI + Ý kiến 4 phòng ban + Export PDF + UAT thật + SMTP | 📝 Carry over |
+| **9+ Post-launch** | E-signature, Bravo/SAP, Mobile, AI OCR | 📝 Future |
 
 Chi tiết atomic tasks: [`changelog/migration-todos.md`](changelog/migration-todos.md).
 Session logs: [`changelog/sessions/`](changelog/sessions/).