Track AddUserInvitations migration files

Force-add the EF migration excluded by the Migrations/ gitignore rule, so
the UserInvitations table migration is versioned alongside the feature.

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

API/ROLAC.API/Migrations/20260624171411_AddUserInvitations.cs

@@ -0,0 +1,59 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace ROLAC.API.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddUserInvitations : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "UserInvitations",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    UserId = table.Column<string>(type: "character varying(450)", maxLength: 450, nullable: false),
+                    TokenHash = table.Column<string>(type: "character varying(64)", maxLength: 64, nullable: false),
+                    ExpiresAt = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
+                    CreatedAt = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
+                    CreatedBy = table.Column<string>(type: "character varying(450)", maxLength: 450, nullable: false),
+                    UsedAt = table.Column<DateTime>(type: "timestamp with time zone", nullable: true),
+                    RevokedAt = table.Column<DateTime>(type: "timestamp with time zone", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_UserInvitations", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_UserInvitations_AspNetUsers_UserId",
+                        column: x => x.UserId,
+                        principalTable: "AspNetUsers",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_UserInvitations_TokenHash",
+                table: "UserInvitations",
+                column: "TokenHash",
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_UserInvitations_UserId",
+                table: "UserInvitations",
+                column: "UserId");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "UserInvitations");
+        }
+    }
+}