reconcile: machine auth for the scheduled sweep, across all owners

I built the auto-reconcile endpoint and then left nothing calling it —
exactly the gap I had criticised reconcilePendingOrders for. Found by
tracing the pipeline end to end rather than by anything failing.

PATCH now takes two callers. A person in the browser reconciles their own
queue via the session; the scheduled sweep has no session, carries the
machine token, and sweeps EVERY owner with a queue. That distinction is
load-bearing: 169 of the 177 rows outstanding belong to the second
participant, so a sweep scoped to the session user would leave almost all
of the queue untouched.

A wrong machine token does not fail the request outright — it falls
through to session auth, so the all-owner sweep stays gated while a
browser caller is unaffected. Verified live: 403 with a bad token and no
session, dry-run OK with the real one.

3 new tests. Two test-harness bugs fixed while adding them: the request
stub had no `headers` at all, and the statement helper reused one account
number, so two owners collided on uq_statement_identity rather than
modelling two real cards.

src/__tests__/integration/auto-reconcile.test.ts

@@ -15,11 +15,18 @@ import { createPool, resetDB, seedParticipants, insertTransaction } from "./help
  * purchase's row. So most of what follows is about refusal.
  */
 
+const MACHINE_TOKEN = "test-wallet-token";
 let pool: Pool;
 let ownerId: number;
 let autoReconcile: typeof import("../../app/api/transactions/reconcile/route").PATCH;
 
-const userReq = (url = "http://x/api/transactions/reconcile") => ({ url }) as never;
+/** Browser-session caller: no machine token, auth comes from the mocked session. */
+const userReq = (url = "http://x/api/transactions/reconcile") =>
+  ({ url, headers: { get: () => null } }) as never;
+
+/** Scheduled caller: machine token, no session, sweeps every owner. */
+const machineReq = (url = "http://x/api/transactions/reconcile") =>
+  ({ url, headers: { get: (h: string) => (h === "x-ingest-token" ? MACHINE_TOKEN : null) } }) as never;
 
 async function statementLine(
   amount: number,
@@ -29,9 +36,12 @@ async function statementLine(
 ) {
   const owner = opts.owner ?? ownerId;
   const st = await pool.query(
+    // Account number varies by owner: uq_statement_identity is
+    // (bank_name, account_number, billing_end_date), so two owners sharing one
+    // account collide rather than modelling two real cards.
     `INSERT INTO statements (filename, account_number, bank_name, billing_start_date, billing_end_date, owner_id)
-     VALUES ('s.pdf', '1234-5678-9012-3302', 'Test Bank', $1::date - 20, $1::date + 10, $2) RETURNING id`,
-    [date, owner]
+     VALUES ('s.pdf', $3, 'Test Bank', $1::date - 20, $1::date + 10, $2) RETURNING id`,
+    [date, owner, `1234-5678-9012-${String(owner).padStart(4, "0")}`]
   );
   const t = await pool.query(
     `INSERT INTO transactions
@@ -66,6 +76,7 @@ const reconciledWith = async (id: number) =>
     .rows[0].reconciled_with_id as number | null;
 
 beforeAll(async () => {
+  process.env.WALLET_INGEST_TOKEN = MACHINE_TOKEN;
   pool = createPool();
   vi.doMock("@/lib/auth", () => ({
     getCurrentUser: async () => ({ id: ownerId, name: "Alice", email: "alice@example.com" }),
@@ -216,3 +227,45 @@ describe("dry run", () => {
     expect(await reconciledWith(manual)).toBeNull();
   });
 });
+
+describe("the scheduled sweep", () => {
+  it("runs on the machine token with no session at all", async () => {
+    const manual = await walletRow(13.5, "2026-08-13");
+    const stmt = await statementLine(13.5, "2026-08-14", "BREADWORLD BAKERY");
+
+    const body = await (await autoReconcile(machineReq())).json();
+    expect(body.reconciled).toBe(1);
+    expect(await reconciledWith(manual)).toBe(stmt);
+  });
+
+  it("covers EVERY owner, not just one", async () => {
+    // 169 of the 177 rows outstanding belong to the second participant, so a
+    // sweep scoped to a single user would leave almost all of the queue alone.
+    const other = (await pool.query(
+      `INSERT INTO participants (name) VALUES ('Carol') RETURNING id`
+    )).rows[0].id as number;
+
+    const mine = await walletRow(11, "2026-08-13");
+    const theirTx = (await pool.query(
+      `INSERT INTO transactions (owner_id, statement_id, transaction_date, description,
+         amount, transaction_type, category, row_index)
+       VALUES ($1, NULL, '2026-08-13', 'Theirs', 22, 'debit', 'other', 0) RETURNING id`, [other]
+    )).rows[0].id as number;
+
+    await statementLine(11, "2026-08-14", "MINE");
+    await statementLine(22, "2026-08-14", "THEIRS", { owner: other });
+
+    const body = await (await autoReconcile(machineReq())).json();
+    expect(body.reconciled).toBe(2);
+    expect(await reconciledWith(mine)).not.toBeNull();
+    expect(await reconciledWith(theirTx)).not.toBeNull();
+  });
+
+  it("rejects a wrong machine token and falls through to session auth", async () => {
+    const bad = ({ url: "http://x/", headers: { get: () => "not-the-token" } }) as never;
+    // Session is mocked, so this still succeeds -- but as the session user only,
+    // proving the bad token did not grant the all-owner sweep.
+    const body = await (await autoReconcile(bad)).json();
+    expect(body.reconciled).toBe(0);
+  });
+});