[CLAUDE] Domain+App+Infra+Api+FE-Admin+FE-User: S36 Plan G-O2 Phòng họp Mig 36 + BE CRUD + FE 2 app

Phase 10.2 G-O2 Phòng họp BookingCalendar — Mig 36 schema + BE CQRS + FE 2 app
mirror cookie-cutter G-H2 HrmConfig pattern. Standalone không depend workflow.

BE schema (Mig 36 — em main solo Step 4):
- 4 Domain new: MeetingRoom catalog + MeetingBooking header + MeetingBookingAttendee
  join table N-to-N (NOT JSON per Investigator verdict) + Enums (MeetingBookingStatus
  3-state: Confirmed/Cancelled/Completed)
- 3 EF Config: UNIQUE Code + composite index (RoomId, StartAt) range query + UNIQUE
  composite (BookingId, UserId) join
- FK strategy: Room→Restrict (preserve history) + Booking→Cascade attendees +
  User→Restrict (denorm FullName+Email tránh cascade wipe)
- Mig 36 3-file rule + ApplicationDbContextModelSnapshot updated + apply Dev+Design DB

BE CQRS (~584 LOC — Implementer Case 2):
- MeetingFeatures.cs 479 LOC 9 handler: 4 Room CRUD + 5 Booking (List + GetById +
  Create + Update + Cancel)
- SERIALIZABLE transaction overlap check via EXISTS query — throw 409 Conflict
  "Phòng đã được đặt trong khoảng thời gian này"
- MeetingRoomsController 49 LOC + MeetingBookingsController 56 LOC — class-level
  [Authorize] + Roles="Admin" for write
- Application.csproj +Microsoft.EntityFrameworkCore.Relational package (em main fix
  IsolationLevel overload — Implementer gotcha #53 4th truncation diagnose mid-task)
- MenuKeys.cs +4 const (Off_PhongHop sub-group + View/Manage/Book leaf)
- DbInitializer +SeedMeetingRoomsAsync 4 sample (PH-A Phòng họp lớn cap=20 + PH-B
  cap=8 + PHG-501 Giám đốc cap=6 + ONL-1 Online Zoom cap=50) — NOT gated DemoSeed
  per gotcha #51 INFRASTRUCTURE seed

FE 2 app (~1770 LOC × 2 — Implementer Case 2):
- types/meeting.ts × 2 SHA256 IDENTICAL (ce0ad9c6d017cde2) — DTO interface mirror
- MeetingCalendarPage.tsx × 2 SHA256 IDENTICAL (d6d160ae1e4f2285) ~530 LOC — custom
  HTML 7-day grid 8h-20h slot, NO FullCalendar dep (~80 KB bundle saved per
  Investigator verdict alternative)
- MeetingRoomsPage.tsx × 2 SHA256 IDENTICAL (ba35a7ef379a5e9c) ~270 LOC — admin
  catalog CRUD table + Dialog
- 4-place mirror Pattern 16-bis 7× cumulative: types + page + App.tsx route +
  menuKeys + Layout staticMap 3 entry (gotcha #50 silent sidebar drop prevention)

Verify:
- dotnet build SolutionErp.slnx PASS 0 error 2 pre-existing DocxRenderer warning
- dotnet test 130/130 PASS baseline preserve (58 Domain + 72 Infra)
- npm build × 2 app PASS 0 TS error (fe-admin 16.91s bundle 1490 KB / fe-user 8.56s
  bundle 1404 KB, +23 KB gzip both)

Pattern reinforced cumulative S36:
- Pattern 12-bis cross-module mirror 10× (PE → Contract V2 → Hrm → Office)
- Pattern 16-bis 4-place mirror cross-app 7×
- Smart Friend Implementer truncation gotcha #53 4th — mitigation tight brief WORK
  (FE 2 app no truncation, BE truncate diagnose mid only)

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

src/Backend/SolutionErp.Domain/Identity/MenuKeys.cs

@@ -99,6 +99,11 @@ public static class MenuKeys
     // ============================================================
     public const string Off = "Off";                                // root group văn phòng số
     public const string OffDanhBa = "Off_DanhBa";                   // Danh bạ nội bộ (card grid)
+    // Phase 10.2 G-O2 (Mig 36 — S36 2026-05-28) — Phòng họp + Booking calendar.
+    public const string OffPhongHop = "Off_PhongHop";                          // sub-group phòng họp
+    public const string OffPhongHopView = "Off_PhongHop_View";                 // Xem lịch (FullCalendar)
+    public const string OffPhongHopManage = "Off_PhongHop_Manage";             // Quản lý phòng (Admin CRUD MeetingRoom)
+    public const string OffPhongHopBook = "Off_PhongHop_Book";                 // Đặt phòng (Create/Update/Cancel Booking)
 
     public static readonly string[] PurchaseEvaluationTypeCodes =
         ["DuyetNcc", "DuyetNccPhuongAn"];
@@ -127,6 +132,7 @@ public static class MenuKeys
         Hrm, HrmHoSo,                                                                            // Mig 34 — Phase 10.1
         HrmConfig, HrmConfigLeaveTypes, HrmConfigHolidays, HrmConfigShifts, HrmConfigOtPolicies, // Mig 35 — Phase 10.2 G-H2
         Off, OffDanhBa,                                                                          // Phase 10.2 G-O1 — Văn phòng số
+        OffPhongHop, OffPhongHopView, OffPhongHopManage, OffPhongHopBook,                        // Phase 10.2 G-O2 — Phòng họp
         System, Users, Roles, Permissions, MenuVisibility, Workflows, PeWorkflows,
         ApprovalWorkflowsV2, ApprovalWorkflowDuyetNccV2, ApprovalWorkflowDuyetNccPhuongAnV2,    // Mig 22
     ];

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

@@ -0,0 +1,12 @@
+namespace SolutionErp.Domain.Office;
+
+// Phase 10.2 G-O2 — Phòng họp BookingCalendar enum.
+// Reference NamGroup TblBookingResource TrangThai 4-state (NamGroup S50)
+// — SOL adapt 3-state, drop "Rejected" (use Cancelled instead).
+
+public enum MeetingBookingStatus
+{
+    Confirmed = 1,    // Đã xác nhận (default sau Create)
+    Cancelled = 2,    // Đã huỷ
+    Completed = 3,    // Đã kết thúc (auto-set khi EndAt < Now via job/manual)
+}

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

@@ -0,0 +1,29 @@
+using SolutionErp.Domain.Common;
+
+namespace SolutionErp.Domain.Office;
+
+// Phase 10.2 G-O2 (Mig 36 — S36) — Booking phòng họp.
+// Overlap check qua SERIALIZABLE tx + EXISTS query trong handler
+// (NOT DB constraint vì datetime range not native SQL Server).
+// Reference NamGroup TblBookingResource S50 — SOL adapt 3-state status.
+public class MeetingBooking : AuditableEntity
+{
+    public Guid RoomId { get; set; }
+    public MeetingRoom Room { get; set; } = null!;        // FK Restrict — không xoá Room còn booking active
+
+    public Guid BookedByUserId { get; set; }              // User đặt phòng (Creator semantics)
+    public string BookedByFullName { get; set; } = string.Empty;  // denorm tránh cascade
+
+    public DateTime StartAt { get; set; }                 // UTC datetime2
+    public DateTime EndAt { get; set; }                   // UTC datetime2. EndAt > StartAt (validator)
+
+    public string Title { get; set; } = string.Empty;     // "Họp giao ban tuần", "Phỏng vấn ứng viên"
+    public string? Description { get; set; }              // Nội dung chi tiết / agenda
+
+    public MeetingBookingStatus Status { get; set; } = MeetingBookingStatus.Confirmed;
+
+    public string? Note { get; set; }                     // Ghi chú thêm (vd "Cần chuẩn bị nước uống")
+
+    // Attendees nav — collection join entity (NOT JSON, theo Investigator verdict S36)
+    public List<MeetingBookingAttendee> Attendees { get; set; } = new();
+}

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

@@ -0,0 +1,21 @@
+using SolutionErp.Domain.Common;
+
+namespace SolutionErp.Domain.Office;
+
+// Phase 10.2 G-O2 (Mig 36 — S36) — Attendee join table N-to-N.
+// Composite PK (BookingId, UserId) — không support add user 2 lần cùng booking.
+// FK Cascade Booking (xoá Booking → wipe Attendees) + Restrict User
+// (admin không xoá user còn invite — denorm name preserve).
+// Reference Investigator verdict: prefer join table over JSON array
+// để index query Notification push + reuse Users API multi-select FE.
+public class MeetingBookingAttendee : BaseEntity   // NO IsDeleted — composite PK delete entire row
+{
+    public Guid BookingId { get; set; }
+    public MeetingBooking Booking { get; set; } = null!;
+
+    public Guid UserId { get; set; }
+    public string FullName { get; set; } = string.Empty;     // denorm tránh JOIN cho Notification push
+    public string? Email { get; set; }                       // denorm cho email outbox future
+
+    public string? Notes { get; set; }                       // "Vắng buổi sáng", "Tham gia online"
+}

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

@@ -0,0 +1,23 @@
+using SolutionErp.Domain.Common;
+
+namespace SolutionErp.Domain.Office;
+
+// Phase 10.2 G-O2 (Mig 36 — S36 2026-05-28) — Phòng họp catalog.
+// Reference NamGroup TblResource 11 cols (S50 design) — SOL adapt clean-room
+// 3 entity: MeetingRoom (catalog) + MeetingBooking (header) + MeetingBookingAttendee (join).
+// AuditableEntity inherit chuẩn SOL Clean Arch.
+public class MeetingRoom : AuditableEntity
+{
+    public string Code { get; set; } = string.Empty;       // UNIQUE — "PH-A", "PH-B", "PHG-501"
+    public string Name { get; set; } = string.Empty;       // "Phòng họp tầng 5", "Phòng họp lớn"
+
+    // Sức chứa tối đa (số người). 0 = không giới hạn (mở rộng tự do).
+    public int Capacity { get; set; }
+
+    public string? Location { get; set; }                  // "Tầng 5, Toà A" / "Trực tuyến Zoom"
+
+    // Trang thiết bị có sẵn (free text): "Máy chiếu, Bảng trắng, Wifi" — info-only.
+    public string? Equipment { get; set; }
+
+    public bool IsActive { get; set; } = true;             // Soft-disable không xoá (preserve booking history)
+}