feat(import-operations): bulk Excel upload for yard-resident empty containers

Empties already sitting in an EDR yard but never entered in the system had
to be typed one at a time. Adds a bulk path: parse the sheet in the browser
(all-or-nothing, row-numbered errors), preview it, then POST one batch.

The server rejects the batch if any container already has a non-COMPLETED
return, so re-uploading the same sheet cannot duplicate boxes. No interchange
notification fires — these are historical rows, not a live handover.

Company is an Autocomplete over registered customers that also accepts a
typed name, since a backfilled box may belong to a company that is not a
customer yet. Exact name match sets customer_id; the name always lands in the
new empty_container_returns.company_name.

Also fixes the single Record Return modal, which collected Yard and Zone and
then dropped them before the API call, and did not invalidate the returns
list after a standalone return.

apps/edr-freight-api/src/migrations/3790000000000-EmptyContainerReturnCompanyName.ts

@@ -0,0 +1,24 @@
+import { MigrationInterface, QueryRunner } from 'typeorm';
+
+/**
+ * Empties backfilled into the yard belong to a company that may not be a
+ * registered customer yet, so `customer_id` cannot hold it. `company_name` is
+ * the typed fallback, and the display label when the customer IS registered.
+ */
+export class EmptyContainerReturnCompanyName3790000000000 implements MigrationInterface {
+  name = 'EmptyContainerReturnCompanyName3790000000000';
+
+  public async up(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`
+      ALTER TABLE freight.empty_container_returns
+        ADD COLUMN IF NOT EXISTS company_name varchar(200)
+    `);
+  }
+
+  public async down(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`
+      ALTER TABLE freight.empty_container_returns
+        DROP COLUMN IF EXISTS company_name
+    `);
+  }
+}