fix(rd21): guard career and job saves with durable revisions

JobTrackerApi/Migrations/20261023090000_AddJobRevision.cs

@@ -0,0 +1,25 @@
+using JobTrackerApi.Data;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace JobTrackerApi.Migrations;
+
+[DbContext(typeof(JobTrackerContext))]
+[Migration("20261023090000_AddJobRevision")]
+public partial class AddJobRevision : Migration
+{
+    protected override void Up(MigrationBuilder migrationBuilder) => migrationBuilder.AddColumn<int>(
+        name: "Version", table: "JobApplications",
+        type: ActiveProvider.Contains("MySql", StringComparison.OrdinalIgnoreCase) ? "int" : "INTEGER",
+        nullable: false, defaultValue: 1);
+
+    protected override void Down(MigrationBuilder migrationBuilder)
+    {
+        if (ActiveProvider.Contains("Sqlite", StringComparison.OrdinalIgnoreCase))
+            migrationBuilder.Sql("ALTER TABLE \"JobApplications\" DROP COLUMN \"Version\";");
+        else
+            migrationBuilder.DropColumn(name: "Version", table: "JobApplications");
+    }
+}

JobTrackerApi/Migrations/JobTrackerContextModelSnapshot.cs

@@ -803,6 +803,7 @@ namespace JobTrackerApi.Migrations
                         .HasColumnType("TEXT");
 
                     b.Property<int>("Version")
+                        .IsConcurrencyToken()
                         .HasColumnType("INTEGER");
 
                     b.HasKey("Id");
@@ -1938,6 +1939,12 @@ namespace JobTrackerApi.Migrations
                     b.Property<string>("TranslatedDescription")
                         .HasColumnType("TEXT");
 
+                    b.Property<int>("Version")
+                        .IsConcurrencyToken()
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER")
+                        .HasDefaultValue(1);
+
                     b.HasKey("Id");
 
                     b.HasIndex("CompanyId");