Add/csv import options (#420)

* feat(import): add customer and supplier parsing functionality

- Implemented customer file parsing in `lib/import/customers/parser.ts` with support for Excel and CSV formats.
- Created types for detected customer columns and parsed customer rows in `lib/import/customers/types.ts`.
- Added tests for customer classification logic in `lib/import/shared/__tests__/classify.test.ts`.
- Developed classification functions for customers and suppliers in `lib/import/shared/classify.ts`.
- Introduced shared column utility functions in `lib/import/shared/column-utils.ts`.
- Implemented supplier file parsing in `lib/import/suppliers/parser.ts` with validation for various fields.
- Created types for detected supplier columns and parsed supplier rows in `lib/import/suppliers/types.ts`.
- Added tests for supplier column detection and parsing in `lib/import/suppliers/__tests__/column-detector.test.ts` and `lib/import/suppliers/__tests__/parser.test.ts`.

* fix(labels): update 'Svenskt företag' to 'Svenskt företag eller organisation' for clarity

* feat(import): refactor encoding handling for Swedish files and add tests for character preservation

* feat(recapt): implement clearRecaptIdentity function and integrate into logout flow

* feat(bookkeeping): implement copy functionality and next voucher sequence retrieval

* feat(import): enhance customer and supplier import functionality with normalization and event handling

components/bookkeeping/JournalEntryList.tsx

@@ -2,12 +2,13 @@
 
 import { useState, useEffect, useCallback } from 'react'
 import Link from 'next/link'
+import { useRouter } from 'next/navigation'
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
 import { Badge } from '@/components/ui/badge'
 import { Button } from '@/components/ui/button'
 import { Label } from '@/components/ui/label'
 import { Switch } from '@/components/ui/switch'
-import { ArrowDownNarrowWide, ArrowUpNarrowWide, ChevronDown, ChevronRight, Paperclip, AlertTriangle, Loader2, BookOpen, X } from 'lucide-react'
+import { ArrowDownNarrowWide, ArrowUpNarrowWide, ChevronDown, ChevronRight, Paperclip, AlertTriangle, Loader2, BookOpen, X, Copy } from 'lucide-react'
 import { Input } from '@/components/ui/input'
 import { AccountNumber } from '@/components/ui/account-number'
 import { getAccountDescription } from '@/lib/bookkeeping/account-descriptions'
@@ -30,6 +31,7 @@ interface Props {
 }
 
 export default function JournalEntryList({ periodId }: Props) {
+  const router = useRouter()
   const [entries, setEntries] = useState<JournalEntry[]>([])
   const [loading, setLoading] = useState(true)
   const [expandedId, setExpandedId] = useState<string | null>(null)
@@ -463,6 +465,15 @@ export default function JournalEntryList({ periodId }: Props) {
                         Skapa ändringsverifikation
                       </Button>
                     )}
+                    <Button
+                      variant="outline"
+                      size="sm"
+                      className="w-full sm:w-auto"
+                      onClick={() => router.push(`/bookkeeping?copy_from=${entry.id}`)}
+                    >
+                      <Copy className="mr-2 h-4 w-4" />
+                      Kopiera
+                    </Button>
                   </div>
                 </CardContent>
               )}