feat: add 4 new Swedish bank CSV parsers and improve transaction categorization

Add auto-detecting CSV parsers for Länsförsäkringar, ICA Banken, Skandia,
and Lunar. Refine SEB detection to avoid false matches. Update bank file
upload UI with new bank options and export instructions. Include booking
templates, improved AI categorization, and transaction review enhancements.

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

components/transactions/SwipeCategorizationView.tsx

@@ -5,12 +5,15 @@ import { motion, useMotionValue, useTransform, AnimatePresence, type PanInfo } f
 import { Card, CardContent, CardHeader } from '@/components/ui/card'
 import { Button } from '@/components/ui/button'
 import { Badge } from '@/components/ui/badge'
+import { useToast } from '@/components/ui/use-toast'
 import VatTreatmentSelect from './VatTreatmentSelect'
 import { formatCurrency, formatDate } from '@/lib/utils'
 import { checkExpenseWarnings } from '@/lib/tax/expense-warnings'
 import { getDefaultAccountForCategory, getDefaultVatTreatmentForCategory } from '@/lib/bookkeeping/category-mapping'
 import AccountCombobox from '@/components/bookkeeping/AccountCombobox'
-import { X, ArrowLeft, ArrowRight, Building, AlertTriangle, Check, FileText, Link2, Receipt as ReceiptIcon, SkipForward } from 'lucide-react'
+import DocumentUploadZone from '@/components/bookkeeping/DocumentUploadZone'
+import type { UploadedFile } from '@/components/bookkeeping/DocumentUploadZone'
+import { X, ArrowLeft, ArrowRight, Building, AlertTriangle, Check, FileText, Link2, Receipt as ReceiptIcon, SkipForward, Paperclip, ChevronDown, ChevronUp } from 'lucide-react'
 import type { TransactionCategory, VatTreatment, BASAccount } from '@/types'
 import type { SuggestedCategory } from '@/lib/transactions/category-suggestions'
 import type { TransactionWithInvoice, CategorizeHandler, MatchInvoiceHandler } from './transaction-types'
@@ -34,6 +37,7 @@ export default function SwipeCategorizationView({
   onMatchInvoice,
   onClose,
 }: SwipeCategorizationViewProps) {
+  const { toast } = useToast()
   const [showAllCategories, setShowAllCategories] = useState(false)
   const [currentIndex, setCurrentIndex] = useState(0)
   const [showCategorySelect, setShowCategorySelect] = useState(false)
@@ -46,6 +50,8 @@ export default function SwipeCategorizationView({
   const [accountOverride, setAccountOverride] = useState('')
   const [vatTreatment, setVatTreatment] = useState<VatTreatment | 'none'>('standard_25')
   const [accounts, setAccounts] = useState<BASAccount[]>([])
+  const [uploadedFiles, setUploadedFiles] = useState<UploadedFile[]>([])
+  const [showUploadZone, setShowUploadZone] = useState(false)
 
   // Clear VAT treatment when switching to a liability/equity account (class 2)
   useEffect(() => {
@@ -143,6 +149,11 @@ export default function SwipeCategorizationView({
     [isProcessing, currentTransaction, handleCategorySelect, x, moveToNext]
   )
 
+  const resetUploadState = useCallback(() => {
+    setUploadedFiles([])
+    setShowUploadZone(false)
+  }, [])
+
   const handleReviewConfirm = async () => {
     if (!pendingCategory) return
 
@@ -156,14 +167,39 @@ export default function SwipeCategorizationView({
         ? accountOverride
         : undefined
 
-      const success = await onCategorize(
+      const journalEntryId = await onCategorize(
         currentTransaction.id,
         true,
         pendingCategory,
         resolvedVat,
         override
       )
-      if (success) {
+      if (journalEntryId) {
+        // Link uploaded documents to the journal entry
+        if (uploadedFiles.length > 0) {
+          const filesToLink = uploadedFiles.filter((f) => f.status === 'uploaded' && f.id)
+          let linkFailCount = 0
+          for (const file of filesToLink) {
+            try {
+              await fetch(`/api/documents/${file.id}/link`, {
+                method: 'POST',
+                headers: { 'Content-Type': 'application/json' },
+                body: JSON.stringify({ journal_entry_id: journalEntryId }),
+              })
+            } catch {
+              linkFailCount++
+            }
+          }
+          if (linkFailCount > 0) {
+            toast({
+              title: 'Underlag kunde inte bifogas',
+              description: `${linkFailCount} fil(er) kunde inte lankas till verifikationen.`,
+              variant: 'destructive',
+            })
+          }
+        }
+
+        resetUploadState()
         setShowReviewStep(false)
         setPendingCategory(null)
         moveToNext()
@@ -204,8 +240,9 @@ export default function SwipeCategorizationView({
     setShowCategorySelect(false)
     setShowReviewStep(false)
     setPendingCategory(null)
+    resetUploadState()
     moveToNext()
-  }, [moveToNext])
+  }, [moveToNext, resetUploadState])
 
   if (!currentTransaction) {
     return (
@@ -352,12 +389,45 @@ export default function SwipeCategorizationView({
               />
               {isLiabilityAccount && (
                 <p className="text-xs text-muted-foreground mt-1">
-                  Ingen moms för skuld-/eget kapital-konton
+                  Ingen moms for skuld-/eget kapital-konton
                 </p>
               )}
             </div>
           </div>
 
+          {/* Document upload */}
+          <div className="rounded-lg border">
+            <button
+              type="button"
+              onClick={() => setShowUploadZone(!showUploadZone)}
+              className="flex items-center justify-between w-full px-3 py-2.5 text-sm hover:bg-muted/50 transition-colors"
+            >
+              <div className="flex items-center gap-2">
+                <Paperclip className="h-4 w-4 text-muted-foreground" />
+                <span className="font-medium">Underlag</span>
+                {uploadedFiles.filter((f) => f.status === 'uploaded').length > 0 && (
+                  <span className="text-xs text-muted-foreground">
+                    {uploadedFiles.filter((f) => f.status === 'uploaded').length} bifogade
+                  </span>
+                )}
+              </div>
+              {showUploadZone ? (
+                <ChevronUp className="h-4 w-4 text-muted-foreground" />
+              ) : (
+                <ChevronDown className="h-4 w-4 text-muted-foreground" />
+              )}
+            </button>
+            {showUploadZone && (
+              <div className="px-3 pb-3">
+                <DocumentUploadZone
+                  files={uploadedFiles}
+                  onFilesChange={setUploadedFiles}
+                  compact
+                />
+              </div>
+            )}
+          </div>
+
           {error && (
             <div className="p-3 rounded-lg bg-destructive/10 text-destructive text-sm">
               {error}
@@ -373,7 +443,7 @@ export default function SwipeCategorizationView({
             disabled={isProcessing || !accountOverride}
           >
             <Check className="mr-2 h-4 w-4" />
-            {isProcessing ? 'Bokför...' : 'Bokför'}
+            {isProcessing ? 'Bokfor...' : 'Bokfor'}
           </Button>
           <Button
             variant="ghost"