The nightly skattekonto sync emailed "Skattekontot stämmer inte med
bokföringen" whenever Skatteverket's saldo differed from BAS 1630 by more
than 1 kr, every 24 hours while it lasted. On 2026-09-02 it fired on a
35 842 kr gap that the reconciliation explained to the last krona with 14
unbooked rows, while the Hem notice and the reconciliation page (both
gated on unexplained_difference) said nothing was wrong.
The check shipped in May 2026 (#525) before any in-app skattekonto view
existed; the dashboard tile its comments promise was never built and the
drift API route had no consumer. Since 2026-08-25 the reconciliation page
and the Hem notice are the surface, with one definition of "stämmer inte".
Removed: skattekonto-drift.ts, skattekonto-drift-email.ts, their tests,
the skattekonto.drift_detected event type, the handler registration, the
cron's drift hook, GET /api/extensions/skatteverket/skattekonto/drift, and
the ROPA activity for the mail. The route is dropped from the ungated
extension route allowlist to lock the ratchet. skattekonto_drift_tolerance
stays: the Hem notice reads it. Stale skattekonto_drift_last_alert_at rows
in extension_data are inert.
Co-authored-by: Jakob Wennberg <311770904+jakobwennberg-oss@users.noreply.github.com>
Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com>
Jakob Wennberg
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