feat(frontend): redesign Lexware Import with browsable list + Ansprechpartner

- Replace search-only ImportTab with paginated browsable list of all Lexware contacts
- Add expandable Ansprechpartner (contact persons) section per company
- Individual Ansprechpartner can be imported as CRM contacts
- Add pagination controls for navigating large contact lists
- Search filter still available (min. 3 chars, backend MinLength constraint)
- Clean up useLexwareContacts hook with proper query key

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

packages/frontend/src/crm/hooks.ts

@@ -69,6 +69,8 @@ export const crmKeys = {
     all: ['crm', 'lexware'] as const,
     contactSearch: (params: LexwareContactSearchParams) =>
       ['crm', 'lexware', 'contacts', 'search', params] as const,
+    contactList: (params: LexwareContactSearchParams) =>
+      ['crm', 'lexware', 'contacts', 'list', params] as const,
     vouchersCompany: (companyId: string, params?: LexwareVouchersQueryParams) =>
       ['crm', 'lexware', 'vouchers', 'company', companyId, params] as const,
     vouchersContact: (contactId: string, params?: LexwareVouchersQueryParams) =>
@@ -405,6 +407,18 @@ export function useLexwareContactSearch(
   });
 }
 
+/** Fetch Lexware contacts (paginated, no search filter required) */
+export function useLexwareContacts(
+  params: LexwareContactSearchParams = {},
+  enabled = true,
+) {
+  return useQuery({
+    queryKey: crmKeys.lexware.contactList(params),
+    queryFn: () => lexwareContactsApi.search(params),
+    enabled,
+  });
+}
+
 export function useLinkLexwareCompany() {
   const qc = useQueryClient();
   return useMutation({

packages/frontend/src/crm/lexware/LexwareSyncPage.module.css

@@ -127,12 +127,10 @@
   margin: 0;
 }
 
-/* Result card */
+/* Result card — column layout for expandable Ansprechpartner */
 .resultCard {
   display: flex;
-  align-items: center;
-  justify-content: space-between;
-  gap: 1rem;
+  flex-direction: column;
   padding: 0.875rem 0;
   border-bottom: 1px solid var(--color-border);
 }
@@ -141,6 +139,13 @@
   border-bottom: none;
 }
 
+.resultCardMain {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 1rem;
+}
+
 .resultInfo {
   flex: 1;
   min-width: 0;
@@ -436,3 +441,141 @@
   opacity: 0.5;
   cursor: wait;
 }
+
+/* Expand button for Ansprechpartner */
+.expandBtn {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.25rem;
+  padding: 0.375rem 0.625rem;
+  border: 1px solid var(--color-border);
+  border-radius: var(--radius-sm);
+  background: var(--color-bg);
+  color: var(--color-text-muted);
+  font-size: 0.75rem;
+  font-weight: 600;
+  cursor: pointer;
+  transition: all 0.15s;
+  white-space: nowrap;
+}
+
+.expandBtn:hover {
+  color: var(--color-text);
+  border-color: var(--color-text-muted);
+}
+
+.expandBtnActive {
+  color: var(--color-primary);
+  border-color: var(--color-primary);
+  background: var(--color-primary-bg, #eff6ff);
+}
+
+/* Ansprechpartner (Contact Persons) section */
+.cpSection {
+  margin-top: 0.75rem;
+  padding: 0.75rem;
+  background: var(--color-bg);
+  border-radius: var(--radius-sm);
+  border: 1px solid var(--color-border);
+}
+
+.cpTitle {
+  display: flex;
+  align-items: center;
+  gap: 0.375rem;
+  font-size: 0.8125rem;
+  font-weight: 600;
+  color: var(--color-text-muted);
+  margin-bottom: 0.5rem;
+  padding-bottom: 0.5rem;
+  border-bottom: 1px solid var(--color-border);
+}
+
+.cpRow {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 0.75rem;
+  padding: 0.5rem 0;
+}
+
+.cpRow:not(:last-child) {
+  border-bottom: 1px solid var(--color-border);
+}
+
+.cpInfo {
+  flex: 1;
+  min-width: 0;
+}
+
+.cpName {
+  display: flex;
+  align-items: center;
+  gap: 0.375rem;
+  font-size: 0.875rem;
+  font-weight: 500;
+  color: var(--color-text);
+}
+
+.cpMeta {
+  display: block;
+  font-size: 0.8125rem;
+  color: var(--color-text-muted);
+  margin-top: 0.125rem;
+}
+
+.cpPrimary {
+  display: inline-block;
+  padding: 0 0.375rem;
+  border-radius: 4px;
+  background: #dbeafe;
+  color: #1d4ed8;
+  font-size: 0.625rem;
+  font-weight: 700;
+  text-transform: uppercase;
+  letter-spacing: 0.025em;
+}
+
+:global([data-theme='dark']) .cpPrimary {
+  background: #1e3a5f;
+  color: #93c5fd;
+}
+
+/* Pagination */
+.pagination {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: 1rem;
+  padding: 1rem 0 0;
+  margin-top: 0.5rem;
+}
+
+.pageBtn {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.375rem;
+  padding: 0.5rem 0.875rem;
+  border: 1px solid var(--color-border);
+  border-radius: var(--radius-sm);
+  background: var(--color-bg-card);
+  color: var(--color-text);
+  font-size: 0.875rem;
+  cursor: pointer;
+  transition: all 0.15s;
+}
+
+.pageBtn:hover:not(:disabled) {
+  border-color: var(--color-primary);
+  color: var(--color-primary);
+}
+
+.pageBtn:disabled {
+  opacity: 0.4;
+  cursor: not-allowed;
+}
+
+.pageInfo {
+  font-size: 0.875rem;
+  color: var(--color-text-muted);
+}

packages/frontend/src/crm/lexware/LexwareSyncPage.tsx

@@ -1,16 +1,23 @@
-import { useState, useEffect, useRef } from 'react';
+import { useState, useEffect } from 'react';
 import { Link, Navigate } from 'react-router-dom';
 import { useAuth } from '../../auth/AuthContext';
 import { useCrmSettings } from '../settings/CrmSettingsContext';
 import {
-  useLexwareContactSearch,
+  useLexwareContacts,
   useImportLexwareAsCompany,
   useImportLexwareAsContact,
+  useCreateContact,
   useCompanies,
   useContacts,
   usePushToLexware,
 } from '../hooks';
-import type { LexwareContact, Company, Contact } from '../types';
+import type {
+  LexwareContact,
+  LexwareContactPersonEntry,
+  LexwareContactSearchParams,
+  Company,
+  Contact,
+} from '../types';
 import styles from './LexwareSyncPage.module.css';
 
 // ============================================================
@@ -59,31 +66,39 @@ function lexwareRoles(c: LexwareContact): string {
 function ImportTab() {
   const [searchTerm, setSearchTerm] = useState('');
   const [debouncedTerm, setDebouncedTerm] = useState('');
+  const [currentPage, setCurrentPage] = useState(0);
+  const [expandedIds, setExpandedIds] = useState<Set<string>>(new Set());
   const [successMessage, setSuccessMessage] = useState('');
-  const inputRef = useRef<HTMLInputElement>(null);
 
   const importAsCompany = useImportLexwareAsCompany();
   const importAsContact = useImportLexwareAsContact();
+  const createContact = useCreateContact();
 
-  useEffect(() => {
-    setTimeout(() => inputRef.current?.focus(), 100);
-  }, []);
-
-  // Debounce
+  // Debounce search
   useEffect(() => {
     const timer = setTimeout(() => {
       setDebouncedTerm(searchTerm.trim());
+      setCurrentPage(0);
     }, 400);
     return () => clearTimeout(timer);
   }, [searchTerm]);
 
-  const { data, isLoading } = useLexwareContactSearch(
-    { name: debouncedTerm },
-    debouncedTerm.length >= 2,
-  );
+  // Build params: name only when >= 3 chars (backend MinLength(3))
+  const searchParams: LexwareContactSearchParams = {
+    page: currentPage,
+    size: 25,
+    ...(debouncedTerm.length >= 3 ? { name: debouncedTerm } : {}),
+  };
 
+  const { data, isLoading } = useLexwareContacts(searchParams);
   const results: LexwareContact[] = data?.data ?? [];
-  const isImporting = importAsCompany.isPending || importAsContact.isPending;
+  const pagination = data?.pagination;
+  const totalPages = pagination?.totalPages ?? 1;
+
+  const isImporting =
+    importAsCompany.isPending ||
+    importAsContact.isPending ||
+    createContact.isPending;
 
   const handleImportAsCompany = (lexwareContactId: string, name: string) => {
     importAsCompany.mutate(
@@ -109,18 +124,54 @@ function ImportTab() {
     );
   };
 
+  const handleImportContactPerson = (
+    person: LexwareContactPersonEntry,
+    companyName: string,
+  ) => {
+    const cpName =
+      [person.firstName, person.lastName].filter(Boolean).join(' ') ||
+      'Ansprechpartner';
+    createContact.mutate(
+      {
+        firstName: person.firstName || undefined,
+        lastName: person.lastName || undefined,
+        email: person.emailAddress || undefined,
+        phone: person.phoneNumber || undefined,
+        companyName: companyName || undefined,
+        type: 'PERSON',
+      },
+      {
+        onSuccess: () => {
+          setSuccessMessage(
+            `Ansprechpartner "${cpName}" als Kontakt importiert`,
+          );
+          setTimeout(() => setSuccessMessage(''), 4000);
+        },
+      },
+    );
+  };
+
+  const toggleExpanded = (id: string) => {
+    setExpandedIds((prev) => {
+      const next = new Set(prev);
+      if (next.has(id)) next.delete(id);
+      else next.add(id);
+      return next;
+    });
+  };
+
   return (
     <div>
       <p className={styles.tabDesc}>
-        Lexware Office Kontakte durchsuchen und als Unternehmen oder Kontakt in
-        das CRM importieren.
+        Alle Lexware Office Kontakte durchsuchen und als Unternehmen oder
+        Kontakt ins CRM importieren. Ansprechpartner können einzeln importiert
+        werden.
       </p>
 
       <input
-        ref={inputRef}
         type="text"
         className={styles.searchInput}
-        placeholder="Name oder Firma in Lexware suchen..."
+        placeholder="Kontakte filtern (min. 3 Zeichen)..."
         value={searchTerm}
         onChange={(e) => setSearchTerm(e.target.value)}
       />
@@ -143,25 +194,30 @@ function ImportTab() {
         </div>
       )}
 
-      {(importAsCompany.isError || importAsContact.isError) && (
+      {(importAsCompany.isError ||
+        importAsContact.isError ||
+        createContact.isError) && (
         <div className={styles.errorBanner}>
           Import fehlgeschlagen:{' '}
-          {(importAsCompany.error ?? importAsContact.error)?.message ??
-            'Unbekannter Fehler'}
+          {(
+            importAsCompany.error ??
+            importAsContact.error ??
+            createContact.error
+          )?.message ?? 'Unbekannter Fehler'}
         </div>
       )}
 
       <div className={styles.resultsList}>
-        {debouncedTerm.length < 2 && (
-          <p className={styles.hint}>Mindestens 2 Zeichen eingeben...</p>
+        {isLoading && (
+          <p className={styles.hint}>Lade Lexware Office Kontakte...</p>
         )}
 
-        {debouncedTerm.length >= 2 && isLoading && (
-          <p className={styles.hint}>Suche in Lexware Office...</p>
-        )}
-
-        {debouncedTerm.length >= 2 && !isLoading && results.length === 0 && (
-          <p className={styles.hint}>Keine Ergebnisse gefunden</p>
+        {!isLoading && results.length === 0 && (
+          <p className={styles.hint}>
+            {debouncedTerm.length >= 3
+              ? 'Keine Ergebnisse für diese Suche'
+              : 'Keine Kontakte in Lexware Office gefunden'}
+          </p>
         )}
 
         {results.map((contact) => {
@@ -169,67 +225,220 @@ function ImportTab() {
           const email = lexwareEmail(contact);
           const address = lexwareAddress(contact);
           const roles = lexwareRoles(contact);
+          const contactPersons = contact.company?.contactPersons ?? [];
+          const isExpanded = expandedIds.has(contact.id);
 
           return (
             <div key={contact.id} className={styles.resultCard}>
-              <div className={styles.resultInfo}>
-                <div className={styles.resultName}>{name}</div>
-                <div className={styles.resultMeta}>
-                  {roles !== '—' && (
-                    <span className={styles.roleBadge}>{roles}</span>
+              {/* Main row */}
+              <div className={styles.resultCardMain}>
+                <div className={styles.resultInfo}>
+                  <div className={styles.resultName}>{name}</div>
+                  <div className={styles.resultMeta}>
+                    {roles !== '—' && (
+                      <span className={styles.roleBadge}>{roles}</span>
+                    )}
+                    {email && <span>{email}</span>}
+                    {address && <span>{address}</span>}
+                  </div>
+                </div>
+                <div className={styles.resultActions}>
+                  {contactPersons.length > 0 && (
+                    <button
+                      className={`${styles.expandBtn} ${isExpanded ? styles.expandBtnActive : ''}`}
+                      onClick={() => toggleExpanded(contact.id)}
+                      title={
+                        isExpanded
+                          ? 'Ansprechpartner ausblenden'
+                          : 'Ansprechpartner anzeigen'
+                      }
+                    >
+                      <svg
+                        width="14"
+                        height="14"
+                        viewBox="0 0 16 16"
+                        fill="none"
+                        stroke="currentColor"
+                        strokeWidth="1.5"
+                        strokeLinecap="round"
+                        strokeLinejoin="round"
+                        style={{
+                          transform: isExpanded
+                            ? 'rotate(180deg)'
+                            : 'none',
+                          transition: 'transform 0.2s',
+                        }}
+                      >
+                        <path d="M4 6l4 4 4-4" />
+                      </svg>
+                      {contactPersons.length} AP
+                    </button>
                   )}
-                  {email && <span>{email}</span>}
-                  {address && <span>{address}</span>}
+                  <button
+                    className={styles.importBtn}
+                    disabled={isImporting}
+                    onClick={() => handleImportAsCompany(contact.id, name)}
+                    title="Als Unternehmen importieren"
+                  >
+                    <svg
+                      width="14"
+                      height="14"
+                      viewBox="0 0 16 16"
+                      fill="none"
+                      stroke="currentColor"
+                      strokeWidth="1.5"
+                      strokeLinecap="round"
+                      strokeLinejoin="round"
+                    >
+                      <rect x="2" y="6" width="12" height="9" rx="1" />
+                      <path d="M5 6V3a1 1 0 011-1h4a1 1 0 011 1v3" />
+                    </svg>
+                    Unternehmen
+                  </button>
+                  <button
+                    className={styles.importBtn}
+                    disabled={isImporting}
+                    onClick={() => handleImportAsContact(contact.id, name)}
+                    title="Als Kontakt importieren"
+                  >
+                    <svg
+                      width="14"
+                      height="14"
+                      viewBox="0 0 16 16"
+                      fill="none"
+                      stroke="currentColor"
+                      strokeWidth="1.5"
+                      strokeLinecap="round"
+                      strokeLinejoin="round"
+                    >
+                      <circle cx="8" cy="5" r="3" />
+                      <path d="M2 14c0-2.5 2.5-4.5 6-4.5s6 2 6 4.5" />
+                    </svg>
+                    Kontakt
+                  </button>
                 </div>
               </div>
-              <div className={styles.resultActions}>
-                <button
-                  className={styles.importBtn}
-                  disabled={isImporting}
-                  onClick={() => handleImportAsCompany(contact.id, name)}
-                  title="Als Unternehmen importieren"
-                >
-                  <svg
-                    width="14"
-                    height="14"
-                    viewBox="0 0 16 16"
-                    fill="none"
-                    stroke="currentColor"
-                    strokeWidth="1.5"
-                    strokeLinecap="round"
-                    strokeLinejoin="round"
-                  >
-                    <rect x="2" y="6" width="12" height="9" rx="1" />
-                    <path d="M5 6V3a1 1 0 011-1h4a1 1 0 011 1v3" />
-                  </svg>
-                  Unternehmen
-                </button>
-                <button
-                  className={styles.importBtn}
-                  disabled={isImporting}
-                  onClick={() => handleImportAsContact(contact.id, name)}
-                  title="Als Kontakt importieren"
-                >
-                  <svg
-                    width="14"
-                    height="14"
-                    viewBox="0 0 16 16"
-                    fill="none"
-                    stroke="currentColor"
-                    strokeWidth="1.5"
-                    strokeLinecap="round"
-                    strokeLinejoin="round"
-                  >
-                    <circle cx="8" cy="5" r="3" />
-                    <path d="M2 14c0-2.5 2.5-4.5 6-4.5s6 2 6 4.5" />
-                  </svg>
-                  Kontakt
-                </button>
-              </div>
+
+              {/* Ansprechpartner expandable section */}
+              {isExpanded && contactPersons.length > 0 && (
+                <div className={styles.cpSection}>
+                  <div className={styles.cpTitle}>
+                    <svg
+                      width="14"
+                      height="14"
+                      viewBox="0 0 16 16"
+                      fill="none"
+                      stroke="currentColor"
+                      strokeWidth="1.5"
+                      strokeLinecap="round"
+                      strokeLinejoin="round"
+                    >
+                      <circle cx="6" cy="5" r="2.5" />
+                      <path d="M1 13c0-2 2-3.5 5-3.5" />
+                      <circle cx="12" cy="6" r="2" />
+                      <path d="M9 13c0-1.5 1.5-2.5 3-2.5s3 1 3 2.5" />
+                    </svg>
+                    Ansprechpartner ({contactPersons.length})
+                  </div>
+                  {contactPersons.map((cp, idx) => {
+                    const cpName =
+                      [cp.firstName, cp.lastName]
+                        .filter(Boolean)
+                        .join(' ') || 'Unbenannt';
+                    return (
+                      <div key={idx} className={styles.cpRow}>
+                        <div className={styles.cpInfo}>
+                          <span className={styles.cpName}>
+                            {cpName}
+                            {cp.primary && (
+                              <span className={styles.cpPrimary}>Haupt</span>
+                            )}
+                          </span>
+                          <span className={styles.cpMeta}>
+                            {[cp.emailAddress, cp.phoneNumber]
+                              .filter(Boolean)
+                              .join(' · ') || 'Keine Kontaktdaten'}
+                          </span>
+                        </div>
+                        <button
+                          className={styles.importBtn}
+                          disabled={isImporting}
+                          onClick={() =>
+                            handleImportContactPerson(
+                              cp,
+                              contact.company?.name ?? '',
+                            )
+                          }
+                          title={`${cpName} als CRM-Kontakt importieren`}
+                        >
+                          <svg
+                            width="14"
+                            height="14"
+                            viewBox="0 0 16 16"
+                            fill="none"
+                            stroke="currentColor"
+                            strokeWidth="1.5"
+                            strokeLinecap="round"
+                            strokeLinejoin="round"
+                          >
+                            <circle cx="8" cy="5" r="3" />
+                            <path d="M2 14c0-2.5 2.5-4.5 6-4.5s6 2 6 4.5" />
+                          </svg>
+                          Als Kontakt
+                        </button>
+                      </div>
+                    );
+                  })}
+                </div>
+              )}
             </div>
           );
         })}
       </div>
+
+      {/* Pagination */}
+      {pagination && totalPages > 1 && (
+        <div className={styles.pagination}>
+          <button
+            className={styles.pageBtn}
+            disabled={currentPage === 0}
+            onClick={() => setCurrentPage((p) => p - 1)}
+          >
+            <svg
+              width="14"
+              height="14"
+              viewBox="0 0 14 14"
+              fill="none"
+              stroke="currentColor"
+              strokeWidth="1.5"
+            >
+              <path d="M9 2L4 7l5 5" />
+            </svg>
+            Zurück
+          </button>
+          <span className={styles.pageInfo}>
+            Seite {currentPage + 1} von {totalPages}
+            {pagination.total != null && ` (${pagination.total} Kontakte)`}
+          </span>
+          <button
+            className={styles.pageBtn}
+            disabled={currentPage + 1 >= totalPages}
+            onClick={() => setCurrentPage((p) => p + 1)}
+          >
+            Weiter
+            <svg
+              width="14"
+              height="14"
+              viewBox="0 0 14 14"
+              fill="none"
+              stroke="currentColor"
+              strokeWidth="1.5"
+            >
+              <path d="M5 2l5 5-5 5" />
+            </svg>
+          </button>
+        </div>
+      )}
     </div>
   );
 }

packages/frontend/src/crm/types.ts

@@ -359,11 +359,25 @@ export interface DealVoucher {
   voucher: LexwareVoucher;
 }
 
+export interface LexwareContactPersonEntry {
+  salutation?: string;
+  firstName?: string;
+  lastName?: string;
+  primary?: boolean;
+  emailAddress?: string;
+  phoneNumber?: string;
+}
+
 export interface LexwareContact {
   id: string;
   version: number;
   roles: { customer?: Record<string, unknown>; vendor?: Record<string, unknown> };
-  company?: { name?: string; taxId?: string; allowTaxFreeInvoices?: boolean };
+  company?: {
+    name?: string;
+    taxId?: string;
+    allowTaxFreeInvoices?: boolean;
+    contactPersons?: LexwareContactPersonEntry[];
+  };
   person?: { firstName?: string; lastName?: string; salutation?: string };
   addresses?: {
     billing?: { street?: string; zip?: string; city?: string; countryCode?: string }[];
@@ -378,6 +392,10 @@ export interface LexwareContact {
 export interface LexwareContactSearchParams {
   name?: string;
   email?: string;
+  customer?: boolean;
+  vendor?: boolean;
+  page?: number;
+  size?: number;
 }
 
 export interface LexwareVouchersQueryParams {