feat: add contract extension request functionality

- Implemented  method in  to allow customers to request an extension for expired contracts.
- Added  component in  for users to initiate extension requests.
- Updated  to include logic for handling extension requests for expired contracts.
- Enhanced  to display extension request options and status.
- Created migration to add  and  columns to the contracts table.
- Added unit tests for contract extension request and handling in .
- Defined DTOs for request and extension in .
- Updated types in  to include new fields related to contract extensions.

apps/edr-freight-api/src/migrations/3920000000000-ContractExtensionRequest.ts

@@ -0,0 +1,99 @@
+import { MigrationInterface, QueryRunner } from 'typeorm';
+
+/**
+ * Customer-requested validity extension of an EXPIRED contract.
+ *
+ * Flow: the customer asks from the portal (`extension_requested_at` is stamped,
+ * the reason lands in contract_review_notes as EXTENSION_REQUESTED), then staff
+ * add days on the backoffice detail page and the contract returns to the status
+ * it held before it lapsed. Both expiry paths (nightly sweep + lazy flip on
+ * read) now stash that status in `status_before_expiry`, mirroring
+ * `status_before_suspension`; rows expired before this column existed fall
+ * back to the kind's resting status on extension.
+ *
+ * Also seeds `edr_freight_app:contracts:extend`. `FreightPositionsSeeder`
+ * resolves every registry key against `iam.permissions` at boot and throws on
+ * a missing row, so the catalog row must exist wherever the registry ships.
+ * The grant is copied from whoever already holds `contracts:suspend` — the
+ * registry places both keys on the same desk (marketing), and the position
+ * seeder only re-syncs presets when SEED_EDR_ORG is set.
+ */
+export class ContractExtensionRequest3920000000000 implements MigrationInterface {
+  name = 'ContractExtensionRequest3920000000000';
+
+  private static readonly KEY = 'edr_freight_app:contracts:extend';
+  private static readonly ID = 'a3000001-0001-4000-8000-00000000001d';
+  private static readonly SIBLING_KEY = 'edr_freight_app:contracts:suspend';
+
+  public async up(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`
+      ALTER TABLE freight.contracts
+        ADD COLUMN IF NOT EXISTS extension_requested_at timestamptz NULL
+    `);
+    await queryRunner.query(`
+      ALTER TABLE freight.contracts
+        ADD COLUMN IF NOT EXISTS status_before_expiry varchar(40) NULL
+    `);
+
+    await queryRunner.query(
+      `INSERT INTO iam.permissions (id, key, name, application_id)
+       SELECT $2::uuid,
+              $1::varchar,
+              '{"am": "Extend an expired contract", "en": "Extend an expired contract"}'::jsonb,
+              a.id
+         FROM iam.application a
+        WHERE a.key = 'edr_freight_app'
+          AND NOT EXISTS (SELECT 1 FROM iam.permissions p WHERE p.key = $1::varchar)`,
+      [ContractExtensionRequest3920000000000.KEY, ContractExtensionRequest3920000000000.ID],
+    );
+
+    // Grant wherever suspend is already granted (positions and roles alike).
+    await queryRunner.query(
+      `INSERT INTO iam.position_permissions (position_id, permission_id)
+       SELECT pp.position_id, np.id
+         FROM iam.position_permissions pp
+         JOIN iam.permissions sp ON sp.id = pp.permission_id AND sp.key = $2::varchar
+         JOIN iam.permissions np ON np.key = $1::varchar
+        WHERE NOT EXISTS (
+          SELECT 1 FROM iam.position_permissions x
+           WHERE x.position_id = pp.position_id AND x.permission_id = np.id
+        )`,
+      [ContractExtensionRequest3920000000000.KEY, ContractExtensionRequest3920000000000.SIBLING_KEY],
+    );
+    await queryRunner.query(
+      `INSERT INTO iam.role_permissions (role_id, permission_id)
+       SELECT rp.role_id, np.id
+         FROM iam.role_permissions rp
+         JOIN iam.permissions sp ON sp.id = rp.permission_id AND sp.key = $2::varchar
+         JOIN iam.permissions np ON np.key = $1::varchar
+        WHERE NOT EXISTS (
+          SELECT 1 FROM iam.role_permissions x
+           WHERE x.role_id = rp.role_id AND x.permission_id = np.id
+        )`,
+      [ContractExtensionRequest3920000000000.KEY, ContractExtensionRequest3920000000000.SIBLING_KEY],
+    );
+  }
+
+  /** Grants go first, or the delete trips the permission foreign keys. */
+  public async down(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(
+      `DELETE FROM iam.position_permissions
+        WHERE permission_id IN (SELECT id FROM iam.permissions WHERE key = $1)`,
+      [ContractExtensionRequest3920000000000.KEY],
+    );
+    await queryRunner.query(
+      `DELETE FROM iam.role_permissions
+        WHERE permission_id IN (SELECT id FROM iam.permissions WHERE key = $1)`,
+      [ContractExtensionRequest3920000000000.KEY],
+    );
+    await queryRunner.query(`DELETE FROM iam.permissions WHERE key = $1`, [
+      ContractExtensionRequest3920000000000.KEY,
+    ]);
+    await queryRunner.query(
+      `ALTER TABLE freight.contracts DROP COLUMN IF EXISTS status_before_expiry`,
+    );
+    await queryRunner.query(
+      `ALTER TABLE freight.contracts DROP COLUMN IF EXISTS extension_requested_at`,
+    );
+  }
+}