refactor(medications): split the dose-history ledger into its hook, row and dialogs

The ledger file held two components of 404 and 314 lines. It now reads:

- dose-history/use-dose-history-ledger: the window read, summary, day
  groups and the optimistic mark, plus the owner's edits (toggle, pin,
  release, delete) and one reconcile step after every write
- dose-history/ledger-row-item: the row and, apart from it, the owner's
  row menu
- dose-history/ledger-summary-chart and ledger-confirms

dose-history-ledger.tsx keeps the ledger layout. Markup and behaviour
are unchanged; the guards name the modules that now hold what they
check.

src/components/__tests__/delegated-write-affordances.test.tsx

@@ -185,7 +185,7 @@ import { admittedQuickEntry } from "@/components/dashboard/quick-entry-sheets";
 import { TodayHero } from "@/components/daily/today-hero";
 import { VorsorgeDashboardCard } from "@/components/measurement-reminders/vorsorge-dashboard-card";
 import { EpisodeDocumentsCard } from "@/components/documents/episode-documents-card";
-import { LedgerRowItem } from "@/components/medications/dose-history-ledger";
+import { LedgerRowItem } from "@/components/medications/dose-history/ledger-row-item";
 import { VaccinationsView } from "@/components/vaccinations/vaccinations-view";
 import { VisitsSection } from "@/components/encounters/visits-section";
 import type { EncounterDTO } from "@/lib/encounters/dto";