[CLAUDE] Workflow: wire ApproveV2 + LevelOpinions cho 4 WorkflowApps module (Phase 11 P11-A)

Wire full approval workflow V2 cho Leave/OT/Travel/Vehicle — cookie-cutter
mirror Proposal (Mig 38). Trước đây skeleton Phase 1 (Create+List), giờ
ApproveV2 advance-level + UPSERT LevelOpinion + atomic codegen.

Schema (Mig 41 WireWorkflowAppsApprovalV2 — 84→89 tables, pure additive):
- 4 bảng {Leave,Ot,Travel,Vehicle}LevelOpinions (UNIQUE composite + Cascade
  parent + Restrict Level — mirror ProposalLevelOpinion)
- 1 bảng WorkflowAppCodeSequences (shared atomic MaDonTu, Prefix-keyed)
- 4 cột RejectedFromStatus (smart return tracking)
- enum ApprovalWorkflowApplicableType.TravelRequest = 9

Application (LeaveOt + TravelVehicle ApprovalFeatures.cs — 30 handler):
- GetById detail (Include LevelOpinions + JOIN Step/Level) · UpdateDraft
- Submit (gen MaDonTu + DaGuiDuyet + level=1, verify ApplicableType per module)
- Approve (verify actor==ApproverUserId OR Admin, UPSERT opinion latest-write-wins,
  advance level OR terminal DaDuyet, empty comment → placeholder)
- Reject (→TuChoi) · Return (→TraLai + RejectedFromStatus)

Api: 4 controller +6 route mỗi cái (GET/{id}, PUT/{id}, submit/approve/reject/return)
Infra: DbInitializer seed 4 workflow V2 mẫu (QT-NP/OT/CT/XE-V2-001) → UAT test ngay
FE: WorkflowAppDetailPage.tsx declarative 4-kind (fe-admin+fe-user SHA256 identical)
  — workflow status + opinion timeline + action buttons; gỡ banner skeleton + row nav

Tests: +11 WorkflowAppApproveV2Tests (130→141 PASS) — state machine + UPSERT
  invariant + guards + codegen + forbidden + placeholder (Leave full + Ot smoke)

Verify: build 0 error · 141 test PASS · FE build ×2 · reviewer checklist
  (ApplicableType per-module + cross-module DbSet + [Authorize] — no copy-paste bug)
Known-minor (unreachable): Reject/Return actor-check skip nếu CurrentApprovalLevelOrder
  null — nhưng DaGuiDuyet luôn có set (defer hardening).
ItTicket KHÔNG đụng (kanban, no workflow V2).

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

src/Backend/SolutionErp.Domain/ApprovalWorkflowsV2/ApprovalWorkflow.cs

@@ -55,6 +55,7 @@ public enum ApprovalWorkflowApplicableType
     OtRequest = 6,                  // G-O4 — Đơn OT
     VehicleBooking = 7,             // G-O5 — Đặt xe công
     ItTicket = 8,                   // G-O6 — Ticket CNTT
+    TravelRequest = 9,              // G-O4 — Đơn công tác (Travel) — Phase 11 P11-A
 }
 
 // Bước = Phòng. 1 quy trình có nhiều bước theo Order.

src/Backend/SolutionErp.Domain/Office/LeaveRequest.cs

@@ -19,4 +19,7 @@ public class LeaveRequest : AuditableEntity
     public WorkflowAppStatus Status { get; set; } = WorkflowAppStatus.Nhap;
     public Guid? ApprovalWorkflowId { get; set; }         // pin ApplicableType=5
     public int? CurrentApprovalLevelOrder { get; set; }
+
+    public WorkflowAppStatus? RejectedFromStatus { get; set; }   // smart return tracking (mirror Proposal)
+    public List<LeaveRequestLevelOpinion> LevelOpinions { get; set; } = new();
 }

src/Backend/SolutionErp.Domain/Office/LeaveRequestLevelOpinion.cs

@@ -0,0 +1,28 @@
+using SolutionErp.Domain.ApprovalWorkflowsV2;
+using SolutionErp.Domain.Common;
+
+namespace SolutionErp.Domain.Office;
+
+// Phase 11 P11-A (Mig 41) — Ý kiến cấp duyệt V2 dynamic cho LeaveRequest.
+// Cookie-cutter mirror ProposalLevelOpinion (Mig 38).
+//
+// Mỗi row = 1 (LeaveRequest × ApprovalWorkflowLevel). Service ApproveV2Async sau
+// khi approve thành công Cấp hiện tại sẽ UPSERT row này (latest-write-wins).
+// Reject (TraLai/TuChoi) KHÔNG sync.
+//
+// UNIQUE composite (LeaveRequestId, ApprovalWorkflowLevelId) — 1 row / level / đơn.
+// FK Cascade LeaveRequest (wipe khi xoá) + Restrict Level (admin xoá Level chặn).
+// SignedByUserId track actor thật (có thể Admin override) + denorm FullName.
+public class LeaveRequestLevelOpinion : AuditableEntity
+{
+    public Guid LeaveRequestId { get; set; }
+    public Guid ApprovalWorkflowLevelId { get; set; }
+
+    public string? Comment { get; set; }                 // max 2000 hoặc placeholder
+    public DateTime SignedAt { get; set; }
+    public Guid SignedByUserId { get; set; }             // người ký thực sự (có thể Admin thay)
+    public string SignedByFullName { get; set; } = string.Empty;  // snapshot denorm
+
+    public LeaveRequest? LeaveRequest { get; set; }
+    public ApprovalWorkflowLevel? Level { get; set; }
+}

src/Backend/SolutionErp.Domain/Office/OtRequest.cs

@@ -19,4 +19,7 @@ public class OtRequest : AuditableEntity
     public WorkflowAppStatus Status { get; set; } = WorkflowAppStatus.Nhap;
     public Guid? ApprovalWorkflowId { get; set; }
     public int? CurrentApprovalLevelOrder { get; set; }
+
+    public WorkflowAppStatus? RejectedFromStatus { get; set; }   // smart return tracking (mirror Proposal)
+    public List<OtRequestLevelOpinion> LevelOpinions { get; set; } = new();
 }

src/Backend/SolutionErp.Domain/Office/OtRequestLevelOpinion.cs

@@ -0,0 +1,28 @@
+using SolutionErp.Domain.ApprovalWorkflowsV2;
+using SolutionErp.Domain.Common;
+
+namespace SolutionErp.Domain.Office;
+
+// Phase 11 P11-A (Mig 41) — Ý kiến cấp duyệt V2 dynamic cho OtRequest.
+// Cookie-cutter mirror ProposalLevelOpinion (Mig 38).
+//
+// Mỗi row = 1 (OtRequest × ApprovalWorkflowLevel). Service ApproveV2Async sau
+// khi approve thành công Cấp hiện tại sẽ UPSERT row này (latest-write-wins).
+// Reject (TraLai/TuChoi) KHÔNG sync.
+//
+// UNIQUE composite (OtRequestId, ApprovalWorkflowLevelId) — 1 row / level / đơn.
+// FK Cascade OtRequest (wipe khi xoá) + Restrict Level (admin xoá Level chặn).
+// SignedByUserId track actor thật (có thể Admin override) + denorm FullName.
+public class OtRequestLevelOpinion : AuditableEntity
+{
+    public Guid OtRequestId { get; set; }
+    public Guid ApprovalWorkflowLevelId { get; set; }
+
+    public string? Comment { get; set; }                 // max 2000 hoặc placeholder
+    public DateTime SignedAt { get; set; }
+    public Guid SignedByUserId { get; set; }             // người ký thực sự (có thể Admin thay)
+    public string SignedByFullName { get; set; } = string.Empty;  // snapshot denorm
+
+    public OtRequest? OtRequest { get; set; }
+    public ApprovalWorkflowLevel? Level { get; set; }
+}

src/Backend/SolutionErp.Domain/Office/TravelRequest.cs

@@ -18,4 +18,7 @@ public class TravelRequest : AuditableEntity
     public WorkflowAppStatus Status { get; set; } = WorkflowAppStatus.Nhap;
     public Guid? ApprovalWorkflowId { get; set; }
     public int? CurrentApprovalLevelOrder { get; set; }
+
+    public WorkflowAppStatus? RejectedFromStatus { get; set; }   // smart return tracking (mirror Proposal)
+    public List<TravelRequestLevelOpinion> LevelOpinions { get; set; } = new();
 }

src/Backend/SolutionErp.Domain/Office/TravelRequestLevelOpinion.cs

@@ -0,0 +1,28 @@
+using SolutionErp.Domain.ApprovalWorkflowsV2;
+using SolutionErp.Domain.Common;
+
+namespace SolutionErp.Domain.Office;
+
+// Phase 11 P11-A (Mig 41) — Ý kiến cấp duyệt V2 dynamic cho TravelRequest.
+// Cookie-cutter mirror ProposalLevelOpinion (Mig 38).
+//
+// Mỗi row = 1 (TravelRequest × ApprovalWorkflowLevel). Service ApproveV2Async sau
+// khi approve thành công Cấp hiện tại sẽ UPSERT row này (latest-write-wins).
+// Reject (TraLai/TuChoi) KHÔNG sync.
+//
+// UNIQUE composite (TravelRequestId, ApprovalWorkflowLevelId) — 1 row / level / đơn.
+// FK Cascade TravelRequest (wipe khi xoá) + Restrict Level (admin xoá Level chặn).
+// SignedByUserId track actor thật (có thể Admin override) + denorm FullName.
+public class TravelRequestLevelOpinion : AuditableEntity
+{
+    public Guid TravelRequestId { get; set; }
+    public Guid ApprovalWorkflowLevelId { get; set; }
+
+    public string? Comment { get; set; }                 // max 2000 hoặc placeholder
+    public DateTime SignedAt { get; set; }
+    public Guid SignedByUserId { get; set; }             // người ký thực sự (có thể Admin thay)
+    public string SignedByFullName { get; set; } = string.Empty;  // snapshot denorm
+
+    public TravelRequest? TravelRequest { get; set; }
+    public ApprovalWorkflowLevel? Level { get; set; }
+}

src/Backend/SolutionErp.Domain/Office/VehicleBooking.cs

@@ -20,4 +20,7 @@ public class VehicleBooking : AuditableEntity
     public WorkflowAppStatus Status { get; set; } = WorkflowAppStatus.Nhap;
     public Guid? ApprovalWorkflowId { get; set; }
     public int? CurrentApprovalLevelOrder { get; set; }
+
+    public WorkflowAppStatus? RejectedFromStatus { get; set; }   // smart return tracking (mirror Proposal)
+    public List<VehicleBookingLevelOpinion> LevelOpinions { get; set; } = new();
 }

src/Backend/SolutionErp.Domain/Office/VehicleBookingLevelOpinion.cs

@@ -0,0 +1,28 @@
+using SolutionErp.Domain.ApprovalWorkflowsV2;
+using SolutionErp.Domain.Common;
+
+namespace SolutionErp.Domain.Office;
+
+// Phase 11 P11-A (Mig 41) — Ý kiến cấp duyệt V2 dynamic cho VehicleBooking.
+// Cookie-cutter mirror ProposalLevelOpinion (Mig 38).
+//
+// Mỗi row = 1 (VehicleBooking × ApprovalWorkflowLevel). Service ApproveV2Async sau
+// khi approve thành công Cấp hiện tại sẽ UPSERT row này (latest-write-wins).
+// Reject (TraLai/TuChoi) KHÔNG sync.
+//
+// UNIQUE composite (VehicleBookingId, ApprovalWorkflowLevelId) — 1 row / level / đơn.
+// FK Cascade VehicleBooking (wipe khi xoá) + Restrict Level (admin xoá Level chặn).
+// SignedByUserId track actor thật (có thể Admin override) + denorm FullName.
+public class VehicleBookingLevelOpinion : AuditableEntity
+{
+    public Guid VehicleBookingId { get; set; }
+    public Guid ApprovalWorkflowLevelId { get; set; }
+
+    public string? Comment { get; set; }                 // max 2000 hoặc placeholder
+    public DateTime SignedAt { get; set; }
+    public Guid SignedByUserId { get; set; }             // người ký thực sự (có thể Admin thay)
+    public string SignedByFullName { get; set; } = string.Empty;  // snapshot denorm
+
+    public VehicleBooking? VehicleBooking { get; set; }
+    public ApprovalWorkflowLevel? Level { get; set; }
+}

src/Backend/SolutionErp.Domain/Office/WorkflowAppCodeSequence.cs

@@ -0,0 +1,19 @@
+namespace SolutionErp.Domain.Office;
+
+// Phase 11 P11-A (Mig 41) — Sequence generator dùng chung cho mã đơn từ (MaDonTu)
+// của 4 WorkflowApps module (Leave / OT / Travel / VehicleBooking).
+// Mirror ProposalCodeSequence pattern (Prefix string PK + LastSeq atomic).
+//
+// Prefix-keyed per module per năm, vd:
+//   "DT/LR/2026" (Leave)  → "DT/LR/2026/001" → "DT/LR/2026/002" → ...
+//   "DT/OT/2026" (OT)
+//   "DT/CT/2026" (Travel — Công tác)
+//   "DX/XE/2026" (VehicleBooking — Đặt xe)
+// LastSeq reset đầu năm tự nhiên (key Prefix mới). Update atomic qua
+// SERIALIZABLE transaction trong CodeGen service.
+public class WorkflowAppCodeSequence
+{
+    public string Prefix { get; set; } = string.Empty;     // PK — "DT/LR/2026"
+    public int LastSeq { get; set; }
+    public DateTime UpdatedAt { get; set; }
+}