- Extract shared defaultReferencePeriod helper (src/utils/referencePeriod.ts)
- useHighlights now reads ?refY=YYYY&refM=MM, defaults to previous month
- getHighlights signature: (referenceYear, referenceMonth, ytdYear, windowDays, ...)
- YTD tile pinned to Jan 1 of current civil year, independent of reference month
- CompareReferenceMonthPicker surfaced on /reports/highlights
- Hub highlights panel inherits the same default via useHighlights
- useCartes and useCompare now delegate their default-period helpers to the shared util
- New useReportsPeriod hook reads/writes period via ?from=&to=&period= URL params,
default civil year, pure resolver exported for tests
- New per-domain hooks: useHighlights, useTrends, useCompare, useCategoryZoom
(stubs wired to useReportsPeriod, to be fleshed out in #71-#74)
- Rewire legacy useReports to consume useReportsPeriod; keep backward-compat
state shape (period/customDateFrom/customDateTo) so /reports tabs keep working
- Mark useReports @deprecated pending removal in #76
- Tests: 7 new cases covering resolveReportsPeriod defaults, bookmarks,
invalid inputs, preset resolution
Fixes#70
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>