perf(reference-data): sweep the remaining raw reads onto the session cache, ratchet to 0 (#1941)

Final consumer migration of the responsiveness plan: the 35 files still
fetching fiscal periods, settings, accounts, cash accounts, dimensions or
templates on their own now read lib/reference-data, and every client
write site invalidates the shared cache instead of refetching locally.

Settings and registries: FiscalYearsManager, FiscalPeriodEditor (period
snapshotted once per company so a revalidation cannot reset dates being
edited), BookingTemplatesPanel, ChartOfAccounts, ChartOfAccountsManager,
EditAccountDialog, CorrectionEntryDialog, StrikeLinesDialog,
InvoicePaymentAccountsSettings; the dimensions registry (DimensionsManager,
DimensionCombobox, LineDimensionFields, DimensionFilter, bookkeeping/[id])
reads useDimensions and the ad-hoc fetchDimensions/fetchDimensionsCached
helpers are deleted.

Pages and pickers: CashAccountSelector (FyPicker-shaped restore, once per
company load), use-account-names, FiscalYearGapNotice,
OpeningBalancePeriodStep, BankFileConfirmStep, ImportReviewStep, the import
page (invalidates accounts + periods after a SIE execute), customers list,
invoices list + detail, pending, salary employee, asset dispose, year-end
and periodisering pages (invalidate periods after closing), reports
DimensionPnlView (its pivot picker read the wrong payload key and was
always empty; it now populates), SkatteverketPanel, TemplatePicker,
ArticleForm (vat_registered).

Invoice dialogs and extensions: SendInvoiceDialog, PaymentBookingDialog
(init reduced to the credit-note lookup + catalogue, proposal and voucher
preview fire on open when cached; a local getSession replaces the network
getUser for the fallback CC), InvoiceInboxWorkspace, TicWorkspace,
ArcimMigrationWorkspace (invalidates after each SIE import step),
enable-banking AccountPickerDialog.

raw-reference-fetch ratchet: 35 -> 0 files.

Co-authored-by: Jakob Wennberg <311770904+jakobwennberg-oss@users.noreply.github.com>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

components/bookkeeping/ChartOfAccountsManager.tsx

@@ -28,6 +28,7 @@ import {
 } from 'lucide-react'
 import { cn } from '@/lib/utils'
 import type { BASAccount } from '@/types'
+import { useCompanySettings } from '@/lib/reference-data/hooks'
 import { BAS_REFERENCE, isStandardBASAccount, type BASReferenceAccount } from '@/lib/bookkeeping/bas-reference'
 import { getErrorMessage as getUserErrorMessage } from '@/lib/errors/get-error-message'
 
@@ -75,6 +76,7 @@ export default function ChartOfAccountsManager() {
   const [collapsedMyClasses, setCollapsedMyClasses] = useState<Set<number>>(new Set())
   const [expandedCatalogClasses, setExpandedCatalogClasses] = useState<Set<number>>(new Set())
   const [hideK2Excluded, setHideK2Excluded] = useState<boolean | null>(null)
+  const { settings: companySettings } = useCompanySettings()
   // Off by default: the list endpoint's `?active=false` means "no filter", so
   // leaving it off keeps first paint on the smaller active-only payload.
   // A deactivated account is otherwise invisible everywhere and unrecoverable.
@@ -205,25 +207,18 @@ export default function ChartOfAccountsManager() {
         fetchReference(),
         (async () => {
           if (hideK2Excluded !== null) return
-          try {
-            const res = await fetch('/api/settings')
-            if (res.ok) {
-              const { data } = await res.json()
-              // Default to hiding K2-excluded accounts if the company uses K2 (plan_type === 'k1')
-              setHideK2Excluded(data?.plan_type === 'k1')
-            } else {
-              setHideK2Excluded(false)
-            }
-          } catch {
-            setHideK2Excluded(false)
-          }
+          // Default to hiding K2-excluded accounts if the company uses K2
+          // (plan_type === 'k1'). Settings come from the session cache.
+          setHideK2Excluded(
+            (companySettings as { plan_type?: string } | null)?.plan_type === 'k1',
+          )
         })(),
       ])
       setReferenceLoaded(true)
     } finally {
       setReferenceLoading(false)
     }
-  }, [referenceLoaded, referenceLoading, fetchReference, hideK2Excluded])
+  }, [referenceLoaded, referenceLoading, fetchReference, hideK2Excluded, companySettings])
 
   const refreshAll = useCallback(async () => {
     await Promise.all([