Add accountIds: number[] to the shared useReportsPeriod hook, URL-backed
via a dedicated `sources` query param (comma-separated, bookmarkable like
the existing period/from/to). Purely additive: the hook's existing shape
is unchanged, so all 6 consumers (useTrends, useCompare, useCategoryZoom,
ReportsCategoryPage, ReportsPage, ReportsComparePage) keep compiling as-is.
Also adds the shared ReportFilters { period, accountIds } type for
follow-up issues to consume, and exports pure parseAccountIds/
serializeAccountIds helpers (same hookless-testability pattern as
resolveReportsPeriod). URL parsing validates each token as a finite
integer via a strict regex + Number.isSafeInteger, dropping invalid
tokens individually rather than discarding the whole selection.
This is foundation only: no UI control exposes the filter yet, and no
service reads accountIds yet (both land in follow-up issues of the
"rapports uniformes" epic).
Resolves#272
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
65be6c7482