Addresses /pr-review REQUEST_CHANGES on #255.
- useCompare: the "skip first sync" boolean was not StrictMode-safe — the dev
double-invoke of effects flipped the flag on setup #1, so setup #2 re-synced
the reference month to the civil-year December, re-introducing the very bug
Changement 2 fixes (dev only; prod has no double-invoke). Replace it with a
value-change guard: a ref seeded with the initial `to` plus a pure
syncReferenceOnPeriodChange() that only dispatches when `to` actually changes.
Idempotent across the double-invoke, and now unit-tested (5 cases) since the
decision is a pure function (the project has no renderHook harness).
- Remove the now-orphaned reports.compare.totalRow i18n key (both locales) — the
flat grand total it labelled was replaced by the result lines.
- ComparePeriodTable: gate the "before transfers" line on results.hasTransfers
(previously computed/tested but unused).
- ComparePeriodChart: show the no-data empty state when the expense filter
leaves nothing (a pure income/transfer period) instead of bare axes.
Build + 690 vitest green.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Collapse the three Compare tabs (MoM / YoY / Budget) into two modes. The
new "Actual vs actual" mode exposes an explicit reference-month dropdown
in the header (defaults to the previous month, wraps around January) and
a MoM/YoY sub-toggle. The chart is rewritten to a grouped side-by-side
BarChart with two bars per category (reference period vs comparison
period) so both values are visible at a glance instead of just the
delta. The URL PeriodSelector stays in sync with the reference month.
- useCompare: state splits into { mode: "actual"|"budget", subMode:
"mom"|"yoy", year, month }. Pure helpers previousMonth(),
defaultReferencePeriod(), comparisonMeta() extracted for tests
- CompareModeTabs: 2 modes instead of 3
- New CompareSubModeToggle and CompareReferenceMonthPicker components
- ComparePeriodChart: grouped bars via two <Bar dataKey="..."/> on a
vertical BarChart
- i18n: modeActual / subModeMoM / subModeYoY / referenceMonth (FR+EN),
retire modeMoM / modeYoY
- 9 new vitest cases covering the pure helpers (January wrap-around for
both MoM and YoY, default reference period, month/year arithmetic)
Closes#96
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
