refactor: consolidate AI analyzers into shared lib/ai module and add journal entry reversal columns

Extract shared vision/document analysis logic into lib/ai (vision-client, document-analyzer,
image preprocessing, validation helpers), simplifying invoice-analyzer, receipt-analyzer, and
document classifier. Add migration 046 for journal entry reversal/correction link columns
(reversed_by_id, reverses_id, correction_of_id) required by storno service. Update extension
components and shared UI.

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

app/(dashboard)/deadlines/page.tsx

@@ -145,7 +145,7 @@ export default function DeadlinesPage() {
 
       toast({
         title: 'Deadline uppdaterad',
-        description: 'Dina andringar har sparats',
+        description: 'Dina ändringar har sparats',
       })
 
       fetchData()

app/(dashboard)/invoices/[id]/page.tsx

@@ -181,8 +181,21 @@ export default function InvoiceDetailPage({ params }: { params: Promise<{ id: st
           const data = await response.json()
           throw new Error(data.error || 'Kunde inte markera som betald')
         }
+      } else if (status === 'cancelled') {
+        // Only drafts and proformas can be cancelled directly — sent/overdue/paid
+        // invoices have committed journal entries and require a credit note instead
+        if (invoice.status !== 'draft') {
+          const docType = ((invoice as Invoice & { document_type?: InvoiceDocumentType }).document_type || 'invoice') as InvoiceDocumentType
+          if (docType !== 'proforma') {
+            throw new Error('Bokförda fakturor kan inte makuleras. Skapa en kreditfaktura istället.')
+          }
+        }
+        const { error } = await supabase
+          .from('invoices')
+          .update({ status })
+          .eq('id', invoice.id)
+        if (error) throw new Error(error.message)
       } else {
-        // Other status changes (cancelled) — direct update is fine
         const { error } = await supabase
           .from('invoices')
           .update({ status })
@@ -870,15 +883,6 @@ export default function InvoiceDetailPage({ params }: { params: Promise<{ id: st
                         Skapa kreditfaktura
                       </Button>
                     </Link>
-                    <Button
-                      variant="outline"
-                      className="w-full"
-                      onClick={() => updateStatus('cancelled')}
-                      disabled={isUpdating}
-                    >
-                      <XCircle className="mr-2 h-4 w-4" />
-                      Makulera
-                    </Button>
                   </>
                 )}
                 {invoice.status === 'paid' && isRealInvoice && (

app/api/extensions/invoice-inbox/webhook/__tests__/route.test.ts

@@ -31,9 +31,9 @@ vi.mock('@/extensions/general/invoice-inbox/lib/email-handler', () => ({
   resolveUserFromEmail: vi.fn(),
 }))
 
-// Mock invoice analyzer
-vi.mock('@/extensions/general/invoice-inbox/lib/invoice-analyzer', () => ({
-  analyzeInvoice: vi.fn(),
+// Mock unified document analyzer
+vi.mock('@/lib/ai/document-analyzer', () => ({
+  analyzeDocument: vi.fn(),
 }))
 
 // Mock supplier matcher
@@ -41,6 +41,11 @@ vi.mock('@/extensions/general/invoice-inbox/lib/supplier-matcher', () => ({
   matchSupplier: vi.fn(),
 }))
 
+// Mock receipt pipeline
+vi.mock('@/extensions/general/receipt-ocr/lib/receipt-pipeline', () => ({
+  processReceiptFromDocument: vi.fn(),
+}))
+
 import { POST } from '../route'
 import { parseInboundPayload, extractAttachments, resolveUserFromEmail } from '@/extensions/general/invoice-inbox/lib/email-handler'
 

app/api/extensions/invoice-inbox/webhook/route.ts

@@ -2,9 +2,8 @@ import { createServerClient } from '@supabase/ssr'
 import { NextResponse } from 'next/server'
 import { Webhook } from 'svix'
 import { parseInboundPayload, extractAttachments, resolveUserFromEmail } from '@/extensions/general/invoice-inbox/lib/email-handler'
-import { analyzeInvoice } from '@/extensions/general/invoice-inbox/lib/invoice-analyzer'
 import { matchSupplier } from '@/extensions/general/invoice-inbox/lib/supplier-matcher'
-import { classifyDocument } from '@/lib/documents/classifier'
+import { analyzeDocument } from '@/lib/ai/document-analyzer'
 import { processReceiptFromDocument } from '@/extensions/general/receipt-ocr/lib/receipt-pipeline'
 import crypto from 'crypto'
 
@@ -145,14 +144,13 @@ export async function POST(request: Request) {
 
       if (docError || !document) continue
 
-      // Classify document type
+      // Unified classify + extract in a single Claude call
       let documentType: 'supplier_invoice' | 'receipt' | 'government_letter' | 'unknown' = 'supplier_invoice'
-      let isReverseCharge = false
+      let unifiedResult: Awaited<ReturnType<typeof analyzeDocument>> | null = null
       try {
-        const classification = await classifyDocument(attachment.content, attachment.content_type)
-        documentType = classification.type
-        isReverseCharge = classification.isReverseCharge ?? false
-        console.log(`[document-inbox] Classified as ${documentType} (confidence: ${classification.confidence})`)
+        unifiedResult = await analyzeDocument(attachment.content, attachment.content_type)
+        documentType = unifiedResult.classification.type
+        console.log(`[document-inbox] Classified as ${documentType} (confidence: ${unifiedResult.classification.confidence})`)
       } catch (classifyErr) {
         console.error('[document-inbox] Classification failed, defaulting to supplier_invoice:', classifyErr)
       }
@@ -180,10 +178,15 @@ export async function POST(request: Request) {
       try {
         switch (documentType) {
           case 'supplier_invoice': {
-            // Existing flow: analyze invoice + supplier match
-            const extraction = await analyzeInvoice(attachment.content, attachment.content_type)
+            // Use pre-extracted invoice data from unified call
+            const extraction = unifiedResult?.invoice
+            if (!extraction) {
+              throw new Error('No invoice extraction available')
+            }
 
-            // Store reverse charge flag from classifier in extracted data
+            const isReverseCharge = unifiedResult?.classification.isReverseCharge ?? false
+
+            // Store reverse charge flag in extracted data
             const extractedData = {
               ...(extraction as unknown as Record<string, unknown>),
               isReverseCharge,
@@ -216,7 +219,7 @@ export async function POST(request: Request) {
           }
 
           case 'receipt': {
-            // Receipt pipeline: extract + categorize + match transactions
+            // Use pre-extracted receipt data from unified call
             const { data: urlData } = supabase.storage.from('documents').getPublicUrl(storagePath)
 
             const result = await processReceiptFromDocument(supabase, userId, attachment.content, attachment.content_type, {
@@ -224,6 +227,7 @@ export async function POST(request: Request) {
               source: 'email',
               emailFrom: payload.from,
               storageUrl: urlData.publicUrl,
+              preExtracted: unifiedResult?.receipt ?? undefined,
             })
 
             await supabase