feat(F-111): completed feature

project/migrations/037_orders_history.js

@@ -0,0 +1,25 @@
+/**
+ * Order history log. Every shipping/tracking change and admin state transition
+ * is recorded so the order detail can show a full audit trail.
+ * @param {import('node-pg-migrate').MigrationBuilder} pgm
+ */
+export const up = (pgm) => {
+  pgm.sql(`
+    CREATE TABLE IF NOT EXISTS orders_order_history (
+      id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
+      order_id uuid NOT NULL REFERENCES orders_orders(id) ON DELETE CASCADE,
+      event_type text NOT NULL,
+      message text NOT NULL,
+      tracking_number text NULL,
+      actor_email text NULL,
+      created_at timestamptz NOT NULL DEFAULT now()
+    )
+  `);
+  pgm.sql(
+    `CREATE INDEX IF NOT EXISTS idx_orders_order_history_order ON orders_order_history (order_id, created_at)`,
+  );
+};
+
+export const down = (pgm) => {
+  pgm.sql(`DROP TABLE IF EXISTS orders_order_history`);
+};