fix(salary): surface missing sender bankgiro/IBAN before betalfil download (#1640)

* fix(salary): surface missing sender bankgiro/IBAN before betalfil download

Users see a bankgiro under BANKUPPGIFTER in settings (Bolagsverket
snapshot, display only) while the payment-file routes read
company_settings.bankgiro, so the LB download failed with an error
that pointed at a page that looked correct. 153 companies have a
registry bankgiro but an empty settings field.

- PaymentFilePanel warns up front when the sender bankgiro (bg_lb)
  or IBAN (pain001) is missing, linking to Installningar -> Fakturering
- betalkonton form offers a one-click prefill of the bankgiro from
  companies.tic_snapshot (Luhn-validated, user still saves)
- bg-lb and skattekonto payment-file error copy now names the exact
  place to fix instead of 'foretagsinstallningar'

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* fix(salary): harden bankgiro prefill and warning per skeptic review

- bankgiroFromTicSnapshot now requires the snapshot's orgNumber to match
  companies.org_number before suggesting anything: stale fuzzy-matched
  snapshots can hold another entity's profile, and this field becomes the
  payee account on invoices and Peppol e-invoices
- salary run page refetches settings when the URL returns from the
  intercepting settings modal, so a bankgiro/IBAN saved there clears the
  missing-sender warning instead of leaving it stale

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

components/settings/InvoicePaymentAccountsSettings.tsx

@@ -15,7 +15,9 @@ import {
 } from '@/components/settings/SettingsRows'
 import { useToast } from '@/components/ui/use-toast'
 import { useCompany } from '@/contexts/CompanyContext'
-import { validateBankgiroNumber, validatePlusgiroNumber } from '@/lib/bankgiro/luhn'
+import { createClient } from '@/lib/supabase/client'
+import { bankgiroFromTicSnapshot } from '@/lib/company/snapshot-bank'
+import { formatBankgiroNumber, validateBankgiroNumber, validatePlusgiroNumber } from '@/lib/bankgiro/luhn'
 import { getErrorMessage as getUserErrorMessage } from '@/lib/errors/get-error-message'
 import {
   INVOICE_PAYMENT_ACCOUNT_CURRENCIES,
@@ -78,7 +80,13 @@ export function InvoicePaymentAccountsSettings({
 }: InvoicePaymentAccountsSettingsProps) {
   const t = useTranslations('settings_invoice_payment_accounts')
   const { toast } = useToast()
-  const { role } = useCompany()
+  const { role, company } = useCompany()
+  // Bolagsverket knows most companies' bankgiro (companies.tic_snapshot), but
+  // the payment files read this form's field. Offer the registry number as a
+  // one-click prefill when the SEK field is empty; the user still saves. The
+  // helper only suggests when the snapshot's orgNumber matches the company's
+  // org_number: stale fuzzy-matched snapshots can describe another entity.
+  const [snapshotBankgiro, setSnapshotBankgiro] = useState<string | null>(null)
   const legacySekAccount = useMemo(
     () => legacySekInvoicePaymentAccount({
       bank_name: settings.bank_name,
@@ -133,6 +141,24 @@ export function InvoicePaymentAccountsSettings({
     previousServerAccountsKey.current = serverAccountsKey
   }, [serverAccounts, serverAccountsKey])
 
+  useEffect(() => {
+    if (!company?.id) return
+    const supabase = createClient()
+    let cancelled = false
+    supabase
+      .from('companies')
+      .select('tic_snapshot, org_number')
+      .eq('id', company.id)
+      .maybeSingle()
+      .then(({ data }) => {
+        if (cancelled) return
+        setSnapshotBankgiro(bankgiroFromTicSnapshot(data?.tic_snapshot, data?.org_number))
+      })
+    return () => {
+      cancelled = true
+    }
+  }, [company?.id])
+
   const configuredCurrencies = useMemo(
     () => INVOICE_PAYMENT_ACCOUNT_CURRENCIES.filter((currency) => !!accounts[currency]),
     [accounts],
@@ -397,6 +423,15 @@ export function InvoicePaymentAccountsSettings({
           onChange={(event) => updateField('bankgiro', event.target.value)}
           className="max-w-40 flex-none tabular-nums"
         />
+        {activeCurrency === 'SEK' && !value(activeAccount, 'bankgiro') && snapshotBankgiro && (
+          <button
+            type="button"
+            onClick={() => updateField('bankgiro', formatBankgiroNumber(snapshotBankgiro))}
+            className="text-xs text-muted-foreground underline underline-offset-2 transition-colors duration-150 hover:text-foreground"
+          >
+            {t('bankgiro_prefill', { value: formatBankgiroNumber(snapshotBankgiro) })}
+          </button>
+        )}
       </SettingsRow>
       <SettingsRow
         label={t('plusgiro_label')}