Fix test failures

Author: stevebux

internal/datastore/src/__test__/db.ts

@@ -22,6 +22,7 @@ export async function setupDynamoDBContainer() {
       accessKeyId: "fakeMyKeyId",
       secretAccessKey: "fakeSecretAccessKey",
     },
+    maxAttempts: 1,
   });
 
   const docClient = DynamoDBDocumentClient.from(ddbClient);

internal/datastore/src/__test__/letter-queue-repository.test.ts

@@ -238,6 +238,34 @@ describe("LetterQueueRepository", () => {
       expect(await letterExists(db, "supplier1", "letter1")).toBe(false);
     });
 
+    it("left-pads the priority with zeros in the sort key", async () => {
+      const pendingLetter = await letterQueueRepository.putLetter(
+        createLetter({ priority: 5 }),
+      );
+
+      await letterQueueRepository.updateLetterTimestamp(
+        pendingLetter,
+        new Date("2026-03-04T13:15:45.000Z"),
+      );
+
+      const letter = await getLetter(db, "supplier1", "letter1");
+      expect(letter?.queueSortOrderSk).toBe("05-2026-03-04T13:15:45.000Z");
+    });
+
+    it("defaults a missing priority to 10 in the sort key", async () => {
+      const pendingLetter = await letterQueueRepository.putLetter(
+        createLetter({ priority: undefined }),
+      );
+
+      await letterQueueRepository.updateLetterTimestamp(
+        pendingLetter,
+        new Date("2026-03-04T13:15:45.000Z"),
+      );
+
+      const letter = await getLetter(db, "supplier1", "letter1");
+      expect(letter?.queueSortOrderSk).toBe("10-2026-03-04T13:15:45.000Z");
+    });
+
     it("rethrows errors from DynamoDB when updating the letter", async () => {
       const misconfiguredRepository = new LetterQueueRepository(
         db.docClient,

internal/datastore/src/types.ts

@@ -92,6 +92,7 @@ export const PendingLetterSchema = z.object({
   queueSortOrderSk: z.string().describe("Secondary index SK"),
   specificationId: z.string(),
   groupId: z.string(),
+  priority: z.int().min(0).max(99).optional(),
   ttl: z.int(),
 });