One reporting test went red and nobody touched that code

Problem Description

invoice-export.spec.ts failed on main last night. It asserts on a formatted currency total and it now gets the digits and the symbol arranged differently than expected. Nobody has touched the reporting code in about six weeks, and the only commit in the run is a README link fix.

We are in a release freeze and we have to say something today. The awkward part is that this is all we have: we moved CI providers a fortnight ago and the new workspace keeps job logs for 24 hours, so the previous green run's log is gone, and the per-test history dashboard has not been rebuilt on the new provider. There is no flake list or quarantine convention in this repo.

Two people already have theories - one says a formatting dependency drifted, one says the reporting code was always wrong and only now got exercised. We want a written determination that a reviewer can check, rather than whichever theory gets typed loudest in the channel.

Output Specification

Produce triage-reporting-2204.md containing:

1. What kind of failure this is and who owns the next action, or - if the attached material does not settle it - a clear statement that it does not.
2. What the attached material does establish, quoting the specific lines and values you relied on.
3. What it does not establish, and for each gap the exact artefact you would collect to close it and what that artefact would let you conclude.
4. The next action, stated so someone else can carry it out today.

Do not fill a gap with the most likely story.

Out of scope: editing tests or application code, pinning or changing any dependency, and drafting a bug-report form.

Input Files

Extract the following files before beginning.

=============== FILE: logs/job-2204.log =============== [2026-08-15T23:41:02Z] pipeline: main / test (attempt 1 of 1) [2026-08-15T23:41:02Z] agent: linux-amd64-medium image: ci-node20:stable workspace: /builds/acme/reporting [2026-08-15T23:41:03Z] $ git rev-parse --short HEAD [2026-08-15T23:41:03Z] e77a10c [2026-08-15T23:41:03Z] $ git log -1 --pretty=%s [2026-08-15T23:41:03Z] docs: fix broken links in the README [2026-08-15T23:41:04Z] $ npm install [2026-08-15T23:41:06Z] npm warn old lockfile [2026-08-15T23:41:06Z] npm warn ideal tree: package-lock.json not found; a lockfile will be created but is not committed in this repository [2026-08-15T23:41:45Z] added 1204 packages, and audited 1205 packages in 41s [2026-08-15T23:41:45Z] 118 packages are looking for funding [2026-08-15T23:41:46Z] found 0 vulnerabilities [2026-08-15T23:41:47Z] $ npx vitest run [2026-08-15T23:41:52Z] RUN v2.1.4 /builds/acme/reporting [2026-08-15T23:42:11Z] ✓ tests/reporting/summary.spec.ts (12 tests) 1841ms [2026-08-15T23:42:19Z] ✓ tests/reporting/csv-export.spec.ts (7 tests) 902ms [2026-08-15T23:42:24Z] ❯ tests/reporting/invoice-export.spec.ts (5 tests | 1 failed) 1120ms [2026-08-15T23:42:24Z] × exports the grand total in the account currency [2026-08-15T23:42:24Z] → expected '1.234,50 €' to be '€1,234.50' // Object.is equality [2026-08-15T23:42:24Z] [2026-08-15T23:42:24Z] FAIL tests/reporting/invoice-export.spec.ts > exports the grand total in the account currency [2026-08-15T23:42:24Z] AssertionError: expected '1.234,50 €' to be '€1,234.50' [2026-08-15T23:42:24Z] [2026-08-15T23:42:24Z] - Expected [2026-08-15T23:42:24Z] + Received [2026-08-15T23:42:24Z] [2026-08-15T23:42:24Z] - €1,234.50 [2026-08-15T23:42:24Z] + 1.234,50 € [2026-08-15T23:42:24Z] [2026-08-15T23:42:24Z] ❯ tests/reporting/invoice-export.spec.ts:38:42 [2026-08-15T23:42:24Z] 36| const row = exportInvoice(invoice, { account }); [2026-08-15T23:42:24Z] 37| [2026-08-15T23:42:24Z] 38| expect(row.grandTotal).toBe('€1,234.50'); [2026-08-15T23:42:24Z] | ^ [2026-08-15T23:42:24Z] 39| }); [2026-08-15T23:42:24Z] [2026-08-15T23:42:24Z] Test Files 1 failed | 14 passed (15) [2026-08-15T23:42:24Z] Tests 1 failed | 233 passed (234) [2026-08-15T23:42:24Z] Duration 37.12s [2026-08-15T23:42:25Z] exit status 1 [2026-08-15T23:42:25Z] pipeline: FAILED