Kundenart in der Kunden-Uebersicht und Steuernummer in den Finanz-Einstellungen (Helfer mit Tests)

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

src/pages/CustomerDetailPage.jsx

@@ -12,6 +12,7 @@ import { useWebsiteProjects } from '../hooks/useWebsiteProjects'
 import { customerTabs, resolveCustomerTab } from '../lib/customerTabs'
 import { isInvoiceReady, setCustomerArchived, upgradeToCustomer, markLost, reopenAsLead } from '../lib/leads'
 import { lastRejection } from '../lib/leadDuplicates'
+import { KUNDENART_OPTIONEN, KUNDENART_HINWEIS, kundenartAenderung } from '../lib/kundenFelder'
 import { customerStage, isArchived, customerBadges, customerEyebrow, customerTitle } from '../lib/customerList'
 import { ticketPath, ticketRef } from '../lib/ticketRoutes'
 import { ticketNumber } from '../lib/ticketView'
@@ -154,11 +155,15 @@ function OverviewTab({ customer, stage, onSaved }) {
     notes: customer.notes || '',
     importantCustomer: !!customer.importantCustomer,
   })
+  const [kundenart, setKundenart] = useState(customer.kundenart || '')
   const [busy, setBusy] = useState(false)
   const [msg, setMsg] = useState(null) // { tone: 'ok' | 'err' | 'warn', text }
   const [showLost, setShowLost] = useState(false)
   const { user, employee } = useAuth()
 
+  // Die Kundenart geht nur ins Dokument, wenn sie geaendert wurde (kein Fehler bei noch nicht angelegtem Attribut)
+  const felder = () => ({ ...form, ...kundenartAenderung(kundenart, customer.kundenart) })
+
   const ready = isInvoiceReady({ ...customer, ...form })
 
   // Absage: ungespeicherte Notizen gehen mit, damit der Vermerk nichts ueberschreibt
@@ -182,7 +187,7 @@ function OverviewTab({ customer, stage, onSaved }) {
   const save = async () => {
     setBusy(true); setMsg(null)
     try {
-      await databases.updateDocument(DATABASE_ID, COLLECTIONS.CUSTOMERS, customer.$id, form)
+      await databases.updateDocument(DATABASE_ID, COLLECTIONS.CUSTOMERS, customer.$id, felder())
       setMsg({ tone: 'ok', text: 'Gespeichert' })
       onSaved()
     } catch (err) {
@@ -194,7 +199,7 @@ function OverviewTab({ customer, stage, onSaved }) {
     if (!ready) { setMsg({ tone: 'warn', text: 'Bitte zuerst alle Pflichtfelder (Unternehmen, E-Mail, Strasse, PLZ, Stadt) ausfuellen.' }); return }
     setBusy(true); setMsg(null)
     try {
-      await upgradeToCustomer(customer, form)
+      await upgradeToCustomer(customer, felder())
       setMsg({ tone: 'ok', text: 'Zum festen Kunden gemacht.' })
       onSaved()
     } catch (err) {
@@ -249,6 +254,13 @@ function OverviewTab({ customer, stage, onSaved }) {
         <Card title="Rechnungsdaten">
           {!ready && <div className="kunde-hinweis"><Badge tone="warn">Adresse unvollständig</Badge></div>}
           <dl className="kv kunde-kv">
+            <dt><label htmlFor="kunde-kundenart">Kundenart</label></dt>
+            <dd>
+              <select id="kunde-kundenart" className="select" value={kundenart} onChange={(e) => setKundenart(e.target.value)}>
+                {KUNDENART_OPTIONEN.map((o) => <option key={o.value} value={o.value}>{o.label}</option>)}
+              </select>
+              <div className="hint">{KUNDENART_HINWEIS}</div>
+            </dd>
             <dt><label htmlFor="kunde-street">Strasse + Nr.</label></dt>
             <dd><input id="kunde-street" className="input" value={form.street} onChange={(e) => setForm({ ...form, street: e.target.value })} /></dd>
             <dt><label htmlFor="kunde-postal">PLZ</label></dt>