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>

app/api/import/articles/parse/route.ts

@@ -10,16 +10,11 @@ import type {
   DetectedArticleColumns,
 } from '@/lib/import/articles/types'
 import { getErrorMessage as getUserErrorMessage } from '@/lib/errors/get-error-message'
+import { normalizeNameKey as nameKey } from '@/lib/import/shared/column-utils'
 
 const ALLOWED_EXTENSIONS = ['.xlsx', '.xls', '.csv', '.ods']
 const MAX_FILE_SIZE = 10 * 1024 * 1024 // 10 MB
 
-/** Lowercased dedup key for matching an article by name. */
-function nameKey(value: string | null): string | null {
-  if (!value) return null
-  return value.trim().toLowerCase() || null
-}
-
 /**
  * POST /api/import/articles/parse
  *