feat(companies): attach an eTrade business to each company profile

A TIN holds many business licences split by activity — export of coffee,
freight forwarding, import of vehicles — but the company picked one for
its whole record, so every operational role shared it. Each profile now
names the business it actually operates as.

Stored on `company_profiles.etrade_business` as a snapshot (licence
number, trade name, activity, renewal) rather than a bare licence number,
so the portal and backoffice can show it without an eTrade round-trip —
that API is slow, serves a broken TLS chain and is regularly down. Not
unique: one business may legitimately back several roles.

The licence number is a client input, so it is never stored as sent —
`ETradeService.findBusinessOption` looks it up under the company's own
TIN and persists eTrade's record, which makes another company's licence
simply unfindable.

Choosing one is required wherever the customer adds a role with a TIN
already on file. The onboarding wizard is the exception by necessity: it
picks roles on its first step, before a TIN exists, so there is nothing
to choose from yet. There it is enforced through
`getOnboardingRequirements` instead — an unattached role is reported
outstanding and blocks submission — and the picker sits on the documents
step beside that role's licence upload.

Lifted entirely for a co-operative or investment-licence company: eTrade
holds no record for its TIN, so the requirement would be unsatisfiable.

apps/edr-freight-api/src/migrations/3760000000000-CompanyProfileEtradeBusiness.ts

@@ -0,0 +1,36 @@
+import { MigrationInterface, QueryRunner } from 'typeorm';
+
+/**
+ * Attaches an eTrade business licence to each operational profile.
+ *
+ * A TIN routinely holds a dozen or more licences, split by activity ("Export
+ * trade in coffee", "Freight Forwarders"), and until now the company picked one
+ * for the whole record — every role shared it. Each profile now names the
+ * business it actually operates as.
+ *
+ * Stored as a snapshot ({@link ETradeBusinessOption}: licenceNumber, tradeName,
+ * activity, renewedTo) rather than a bare licence number, so the portal and the
+ * backoffice can show which business is attached without an eTrade round-trip —
+ * eTrade is slow, serves a broken TLS chain, and is regularly down.
+ *
+ * Nullable: existing profiles have none until the customer attaches one, and a
+ * co-operative or investor-licence company has no eTrade record at all.
+ * Deliberately NOT unique — one business can back several profiles.
+ */
+export class CompanyProfileEtradeBusiness3760000000000 implements MigrationInterface {
+  name = 'CompanyProfileEtradeBusiness3760000000000';
+
+  public async up(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`
+      ALTER TABLE freight.company_profiles
+        ADD COLUMN IF NOT EXISTS etrade_business jsonb
+    `);
+  }
+
+  public async down(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`
+      ALTER TABLE freight.company_profiles
+        DROP COLUMN IF EXISTS etrade_business
+    `);
+  }
+}