fix train builder and consolidation

apps/edr-freight-api/src/migrations/2170000000000-ScheduleWagonAdjustmentLogs.ts

@@ -0,0 +1,50 @@
+import { MigrationInterface, QueryRunner } from 'typeorm';
+
+/**
+ * Consist adjustments from a schedule: staff can trim free wagons off a built
+ * train when their tare pushes gross weight over the locomotives' pull limit
+ * (incl. overage tolerance), or couple extra yard wagons on while weight and
+ * length headroom remain. Each add/remove is logged here so the schedule keeps
+ * an auditable history; the built train itself is updated in place.
+ *
+ * Plain columns (no FKs) so the history survives wagon/train deletion.
+ *
+ * NOTE: the shared dev DB has no applied migration history, so this is also
+ * hand-applied there. IF NOT EXISTS keeps that idempotent.
+ */
+export class ScheduleWagonAdjustmentLogs2170000000000 implements MigrationInterface {
+  name = 'ScheduleWagonAdjustmentLogs2170000000000';
+
+  public async up(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`
+      CREATE TABLE IF NOT EXISTS freight.schedule_wagon_adjustment_logs (
+        id uuid NOT NULL DEFAULT uuid_generate_v4(),
+        train_schedule_id uuid NOT NULL,
+        train_id uuid NOT NULL,
+        action varchar(10) NOT NULL,
+        wagon_id uuid NOT NULL,
+        wagon_number varchar(50) NOT NULL,
+        adjusted_by_user_id uuid,
+        occurred_at timestamptz NOT NULL DEFAULT now(),
+        created_at timestamptz NOT NULL DEFAULT now(),
+        updated_at timestamptz NOT NULL DEFAULT now(),
+        deleted_at timestamptz,
+        CONSTRAINT "PK_schedule_wagon_adjustment_logs" PRIMARY KEY (id)
+      );
+    `);
+    await queryRunner.query(`
+      CREATE INDEX IF NOT EXISTS "IDX_swal_train_schedule_id"
+        ON freight.schedule_wagon_adjustment_logs (train_schedule_id);
+    `);
+    await queryRunner.query(`
+      CREATE INDEX IF NOT EXISTS "IDX_swal_train_id"
+        ON freight.schedule_wagon_adjustment_logs (train_id);
+    `);
+  }
+
+  public async down(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`DROP INDEX IF EXISTS freight."IDX_swal_train_id";`);
+    await queryRunner.query(`DROP INDEX IF EXISTS freight."IDX_swal_train_schedule_id";`);
+    await queryRunner.query(`DROP TABLE IF EXISTS freight.schedule_wagon_adjustment_logs;`);
+  }
+}