[CLAUDE] App+Infra+FE-Admin: seed master data + MyDashboard widgets

Task 1 — Seed master data unblock UAT/demo:
- DbInitializer.SeedDepartmentsAsync: 9 departments từ QT-TP-NCC.docx
  (PM/QS/CCM/PRO/FIN/ACT/EQU/HRA/BOD) — reference data không phải demo.
- DbInitializer.SeedDemoMasterDataAsync: 5 demo suppliers (NCC VLXD, NTP
  Xây dựng, TĐ Hoàng Nam, DV Clean, CĐT Vingroup — covers cả 5
  SupplierType) + 3 demo projects (FLOCK01, SkyGarden, Industrial).
  Chỉ seed nếu tables empty — respect admin's real data khi họ add.

Task 2 — Roles CRUD đã có sẵn trong UsersPage (Shield icon button mở
dialog gán 12 roles từ AppRoles.cs). Skip.

Task 3 — MyDashboard role-specific widgets:
- GetMyDashboardQuery (Reports): returns DraftsInProgress (tôi là
  Drafter + phase soạn thảo), PendingMyApproval (phase eligible role
  tôi + không phải tôi drafter), DueSoon 24h, Overdue, DraftsTotalValue.
- Endpoint GET /api/reports/my-dashboard.
- FE MyDashboardRow ở đầu DashboardPage: 4 card hover → navigate.
  Admin ẩn row nếu tất cả = 0 (ERP noise reduction).
  'Đang soạn thảo' + 'Chờ tôi duyệt' clickable → /contracts?filter=...
  (filter param để wire lần sau; row hiện chưa implement).

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

src/Backend/SolutionErp.Api/Controllers/ReportsController.cs

@@ -4,6 +4,7 @@ using Microsoft.AspNetCore.Mvc;
 using SolutionErp.Application.Reports.Commands.ExportContractsToExcel;
 using SolutionErp.Application.Reports.Dtos;
 using SolutionErp.Application.Reports.Queries.GetDashboardStats;
+using SolutionErp.Application.Reports.Queries.GetMyDashboard;
 using SolutionErp.Domain.Contracts;
 
 namespace SolutionErp.Api.Controllers;
@@ -17,6 +18,10 @@ public class ReportsController(IMediator mediator) : ControllerBase
     public async Task<ActionResult<DashboardStatsDto>> Dashboard(CancellationToken ct)
         => Ok(await mediator.Send(new GetDashboardStatsQuery(), ct));
 
+    [HttpGet("my-dashboard")]
+    public async Task<ActionResult<MyDashboardDto>> MyDashboard(CancellationToken ct)
+        => Ok(await mediator.Send(new GetMyDashboardQuery(), ct));
+
     [HttpGet("contracts/export")]
     public async Task<IActionResult> ExportContracts(
         [FromQuery] ContractPhase? phase,