add hard capacity ceiling to weight limit rules

apps/edr-freight-api/src/migrations/1930000000000-AddMaxCapacityToWeightLimitRules.ts

@@ -0,0 +1,28 @@
+import { MigrationInterface, QueryRunner } from "typeorm";
+
+/**
+ * Add a hard per-unit weight ceiling to weight limit rules.
+ *
+ * maxVgmTons stays the soft "overweight" threshold (surcharge + warning);
+ * max_capacity_tons is the absolute ceiling above which a booking cannot be
+ * created at all. Null means no ceiling (existing behavior).
+ */
+export class AddMaxCapacityToWeightLimitRules1930000000000
+  implements MigrationInterface
+{
+  name = "AddMaxCapacityToWeightLimitRules1930000000000";
+
+  public async up(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`
+      ALTER TABLE freight.weight_limit_rules
+        ADD COLUMN IF NOT EXISTS max_capacity_tons numeric(8, 3);
+    `);
+  }
+
+  public async down(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`
+      ALTER TABLE freight.weight_limit_rules
+        DROP COLUMN IF EXISTS max_capacity_tons;
+    `);
+  }
+}