feat: transaction categorization UX improvements and description matching

Add journal entry preview, human-readable account names, auto-apply VAT,
fallback template suggestions, example prompts, invoice match comparison,
and batch result feedback. Also includes user-description-match extension,
describe/batch-describe API routes, improved AI categorization with multi-
suggestion support, and template embedding search.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

extensions/general/receipt-ocr/lib/receipt-categorizer.ts

@@ -28,6 +28,10 @@ const BAS_ACCOUNT_MAPPING: Record<TransactionCategory, string> = {
   expense_marketing: '5910', // Annonsering
   expense_professional_services: '6530', // Redovisningstjänster
   expense_education: '6991', // Övriga avdragsgilla kostnader
+  expense_representation: '6071', // Representation
+  expense_consumables: '5460', // Förbrukningsvaror
+  expense_vehicle: '5611', // Drivmedel bil
+  expense_telecom: '6200', // Telefon och internet
   expense_bank_fees: '6570', // Bankavgifter
   expense_card_fees: '6570', // Kortavgifter
   expense_currency_exchange: '7960', // Valutakursförluster
@@ -273,6 +277,10 @@ export const CATEGORY_LABELS: Record<TransactionCategory, string> = {
   expense_marketing: 'Marknadsföring',
   expense_professional_services: 'Konsulttjänster',
   expense_education: 'Utbildning',
+  expense_representation: 'Representation',
+  expense_consumables: 'Material',
+  expense_vehicle: 'Bil & drivmedel',
+  expense_telecom: 'Telefon & internet',
   expense_bank_fees: 'Bankavgift',
   expense_card_fees: 'Kortavgift',
   expense_currency_exchange: 'Valutaväxling',