Two pre-existing HIGH bugs surfaced by the codebase audit (accounting surface):
- taxReportService: income totals excluded only `status='cancelled'`, never
`kind='storno'`. A Storno (status='sent', amounts stored negative) netted into
the totals on top of the already-excluded cancelled original → double-subtract,
so a cancel-and-reissue read as 0 income instead of the reissued amount.
Now exclude storno rows from grandTotal*/byRate (kept visible in the row list).
Regression test reproduces the real cancel→storno→reissue 3-row flow.
- customerHoursService.buildLineItemFromEntry: `String(entry.entry_date).slice(0,10)`
on a `date` column → Postgres returns a JS Date, baking "Wed Apr 06" into the
invoice line + PDF (SQLite returns the bare string, so SQLite-only tests pass).
Normalise via the Date branch like every other date read.