[CLAUDE] PurchaseEvaluation: Mig 56 ngan sach MA TRAN 3 cot (Du an|PRO|CCM) + badge quyen NS theo role

S76 (anh Kiet FDC + chi Tra Sol) — form ngan sach + hien thi quyen nhap NS trong flow:
- Part 1: form ngan sach -> MA TRAN 3 cot, moi phong nhap+dieu chinh cot minh
  (PRO canEditPro / CCM canEditCcm / Du an FE hien-thi-only). Mig 56
  +ProInitialAmount/ProAdjustmentAmount (additive-nullable + data-migrate
  ProEstimate->ProInitial). full moi cot = ban hanh + hieu chinh.
- Part 2: Workflow Designer (fe-admin) +badge "NS PRO/CCM" canh approver
  (suy tu role Admin|Procurement / Admin|CostControl, hien-thi-only no-authz).
- Part 3: flow quy trinh fe-user/fe-admin (Duyet NCC) +badge tuong tu.
- Fix race mat-du-lieu Part 1 (useIsFetching khoa Luu khi refetch — dong
  cua-so stale-echo, reviewer Part2/3 bat).
- Test 339->344 (+5). 2 workflow review (Part 1 PASS + Part 2/3 PASS).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/Backend/SolutionErp.Infrastructure/Persistence/Configurations/PeWorkItemBudgetConfiguration.cs

@@ -17,6 +17,8 @@ public class PeWorkItemBudgetConfiguration : IEntityTypeConfiguration<PeWorkItem
 
         // Precision match BudgetManualAmount cũ (18,2).
         b.Property(x => x.ProEstimateAmount).HasPrecision(18, 2);
+        b.Property(x => x.ProInitialAmount).HasPrecision(18, 2);
+        b.Property(x => x.ProAdjustmentAmount).HasPrecision(18, 2);
         b.Property(x => x.InitialAmount).HasPrecision(18, 2);
         b.Property(x => x.AdjustmentAmount).HasPrecision(18, 2);
         b.Property(x => x.ProNote).HasMaxLength(1000);

src/Backend/SolutionErp.Infrastructure/Persistence/Migrations/20260619024427_AddProBudgetSplitToPeWorkItemBudget.cs

@@ -0,0 +1,51 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace SolutionErp.Infrastructure.Persistence.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddProBudgetSplitToPeWorkItemBudget : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<decimal>(
+                name: "ProAdjustmentAmount",
+                table: "PeWorkItemBudgets",
+                type: "decimal(18,2)",
+                precision: 18,
+                scale: 2,
+                nullable: true);
+
+            migrationBuilder.AddColumn<decimal>(
+                name: "ProInitialAmount",
+                table: "PeWorkItemBudgets",
+                type: "decimal(18,2)",
+                precision: 18,
+                scale: 2,
+                nullable: true);
+
+            // [S76] Giu so PRO cu: so du tru 1-cot (ProEstimateAmount, <=S75) coi nhu
+            // "ban hanh lan dau" cot PRO -> migrate sang ProInitialAmount. Chay SAU
+            // AddColumn (cot phai ton tai truoc). Idempotent: chi set khi ProInitial trong.
+            // Design-DB 0 rows; chay THAT lan dau tren prod co data (gotcha #64).
+            migrationBuilder.Sql(@"
+UPDATE PeWorkItemBudgets
+SET ProInitialAmount = ProEstimateAmount
+WHERE ProEstimateAmount IS NOT NULL AND ProInitialAmount IS NULL;");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "ProAdjustmentAmount",
+                table: "PeWorkItemBudgets");
+
+            migrationBuilder.DropColumn(
+                name: "ProInitialAmount",
+                table: "PeWorkItemBudgets");
+        }
+    }
+}

src/Backend/SolutionErp.Infrastructure/Persistence/Migrations/ApplicationDbContextModelSnapshot.cs

@@ -4546,10 +4546,18 @@ namespace SolutionErp.Infrastructure.Persistence.Migrations
                     b.Property<bool>("IsDeleted")
                         .HasColumnType("bit");
 
+                    b.Property<decimal?>("ProAdjustmentAmount")
+                        .HasPrecision(18, 2)
+                        .HasColumnType("decimal(18,2)");
+
                     b.Property<decimal?>("ProEstimateAmount")
                         .HasPrecision(18, 2)
                         .HasColumnType("decimal(18,2)");
 
+                    b.Property<decimal?>("ProInitialAmount")
+                        .HasPrecision(18, 2)
+                        .HasColumnType("decimal(18,2)");
+
                     b.Property<string>("ProNote")
                         .HasMaxLength(1000)
                         .HasColumnType("nvarchar(1000)");