chore: reset FabWorks.Core migrations from scratch

Delete old incremental migrations and regenerate a single
InitialCreate that creates all tables (ExportRecords, BomItems,
CutTemplates, FormPrograms) with current schema.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

FabWorks.Core/Migrations/FabWorksDbContextModelSnapshot.cs

@@ -121,10 +121,18 @@ namespace FabWorks.Core.Migrations
 
                     SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
 
+                    b.Property<string>("DrawingNo")
+                        .HasMaxLength(50)
+                        .HasColumnType("nvarchar(50)");
+
                     b.Property<string>("DrawingNumber")
                         .HasMaxLength(100)
                         .HasColumnType("nvarchar(100)");
 
+                    b.Property<string>("EquipmentNo")
+                        .HasMaxLength(50)
+                        .HasColumnType("nvarchar(50)");
+
                     b.Property<DateTime>("ExportedAt")
                         .HasColumnType("datetime2");
 
@@ -144,6 +152,10 @@ namespace FabWorks.Core.Migrations
                         .HasMaxLength(500)
                         .HasColumnType("nvarchar(500)");
 
+                    b.Property<string>("Title")
+                        .HasMaxLength(200)
+                        .HasColumnType("nvarchar(200)");
+
                     b.HasKey("Id");
 
                     b.ToTable("ExportRecords");