chore: repo-wide bloat sweep, remove dead code and fold duplicate helpers (#2150)

* chore: repo-wide bloat sweep, remove dead code and fold duplicate helpers

Remove 33 dead files, ~270 unreferenced exports/types, 13 dead i18n
namespaces and 4 unused dependencies; fold byte-identical helper copies
into one canonical home each (lib/utils chunk/sleep/utcDateStamp,
lib/dates/iso, lib/invariants/uuid, lib/xml/escape, lib/reports/sru/format,
lib/pdf/number-text, lib/browser/panel-request, lib/api/v1/body +
v1ValidationError rolled out to ~55 v1 routes, booking-template schemas).

No behaviour change: v1 bodies and status codes, MCP tool schemas, DB
writes and money math are untouched. Naive ore rounding was deliberately
not swapped for roundOre; see DECISIONS.md 2026-09-02 for the full list
of things left alone on purpose.

tsc, lint, 19588 unit tests and check:guards green; antipattern baseline
ratcheted (naive-ore-round 622 -> 620, hand-rolled-invariant 115 -> 113).

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

* test(transactions): import RawTransaction from @/types after the ingest re-export removal

CI's type ratchet (check:types, full tsconfig) caught the one test file
that still imported the type through lib/transactions/ingest.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

---------

Co-authored-by: Jakob Wennberg <311770904+jakobwennberg-oss@users.noreply.github.com>
Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com>

lib/reference-data/fiscal-scope.ts

@@ -7,16 +7,13 @@
 
 import type { FiscalPeriod } from '@/types'
 import { ALL_YEARS_VALUE } from '@/components/common/fiscal-year-storage'
-
-export function todayIso(): string {
-  return new Date().toISOString().split('T')[0]
-}
+import { todayIsoUtc } from '@/lib/dates/iso'
 
 /** Newest first; optionally drops periods that have not started yet. */
 export function prepareFiscalPeriods(
   periods: readonly FiscalPeriod[],
   hideFuturePeriods: boolean,
-  today: string = todayIso(),
+  today: string = todayIsoUtc(),
 ): FiscalPeriod[] {
   return periods
     .filter((p) => !hideFuturePeriods || p.period_start <= today)
@@ -52,7 +49,7 @@ export function resolveInitialFiscalScope(
   const newest = periods[0] ?? null
 
   if (options.preferLatestEnded) {
-    const today = options.today ?? todayIso()
+    const today = options.today ?? todayIsoUtc()
     const pick = periods.find((p) => p.period_end < today) ?? newest
     return pick ? { periodId: pick.id, period: pick } : null
   }