Telefon und Webseite des Rechnungsstellers: Adressbuch-Feld, Formularfelder, Belegung von masterdata.phone/website

- Adressbuch: neues Feld "Webseite" pro Unternehmen
- Rechnungsmaske: Telefon und Webseite beim Rechnungssteller manuell erfassbar, Vorbelegung aus dem Adressbuch
- masterdata.phone/masterdata.website werden aus den Formularfeldern belegt, mit Adressbuch-Fallback (bisher immer leer)
- Webseite wird in Vorbelegungen mitgespeichert, Telefon fließt über Party.phone in die ZUGFeRD-Daten

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/main/java/de/assecutor/pdftool/address/Address.java

@@ -25,6 +25,7 @@ public class Address {
     private String vatId;
     private String email;
     private String phone;
+    private String website;
 
     // Bankverbindung (v. a. für Rechnungssteller relevant)
     private String bankName;
@@ -119,6 +120,14 @@ public class Address {
         this.phone = phone;
     }
 
+    public String getWebsite() {
+        return website;
+    }
+
+    public void setWebsite(String website) {
+        this.website = website;
+    }
+
     public String getBankName() {
         return bankName;
     }

src/main/java/de/assecutor/pdftool/invoice/InvoiceDraft.java

@@ -27,6 +27,7 @@ public record InvoiceDraft(
         String buyerReference,
         String iban,
         String bic,
+        String website,
         InvoiceMetadata.Party sender,
         InvoiceMetadata.Party recipient,
         List<InvoiceMetadata.LineItem> items,

src/main/java/de/assecutor/pdftool/ui/AddressBookView.java

@@ -159,6 +159,9 @@ public class AddressBookView extends VerticalLayout {
         });
         TextField phone = new TextField("Telefon");
         phone.setValue(target.getPhone() != null ? target.getPhone() : "");
+        TextField website = new TextField("Webseite");
+        website.setValue(target.getWebsite() != null ? target.getWebsite() : "");
+        website.setHelperText("z. B. www.assecutor.de");
 
         // Bankverbindung (optional)
         TextField bankName = new TextField("Bank");
@@ -170,7 +173,7 @@ public class AddressBookView extends VerticalLayout {
         bic.setValue(target.getBic() != null ? target.getBic() : "");
 
         FormLayout form = new FormLayout(type, name, street, zip, city, countryCode, vatId, email, phone,
-                bankName, iban, bic);
+                website, bankName, iban, bic);
         form.setResponsiveSteps(new FormLayout.ResponsiveStep("0", 1), new FormLayout.ResponsiveStep("500px", 2));
         form.setWidth("560px");
         dialog.add(form);
@@ -231,6 +234,7 @@ public class AddressBookView extends VerticalLayout {
             target.setVatId(vatId.getValue().isBlank() ? "" : VatIdValidator.normalize(vatId.getValue()));
             target.setEmail(email.getValue().trim());
             target.setPhone(phone.getValue().trim());
+            target.setWebsite(website.getValue().trim());
             target.setBankName(bankName.getValue().trim());
             target.setIban(iban.getValue().isBlank() ? "" : IbanValidator.normalize(iban.getValue()));
             target.setBic(bic.getValue().trim().toUpperCase());

src/main/java/de/assecutor/pdftool/ui/MainView.java

@@ -379,6 +379,7 @@ public class MainView extends VerticalLayout {
                 "",
                 sender.ibanNormalized(),
                 sender.bicNormalized(),
+                sender.websiteValue(),
                 sender.toParty(), recipient.toParty(),
                 List.copyOf(lineItems),
                 LocalDateTime.now());
@@ -410,6 +411,8 @@ public class MainView extends VerticalLayout {
         currency.setValue(nullToEmpty(draft.currency()));
         paymentTerms.setValue(nullToEmpty(draft.paymentTerms()));
         applyParty(sender, draft.sender());
+        sender.prefillContact(draft.sender() != null ? nullToEmpty(draft.sender().phone()) : "",
+                nullToEmpty(draft.website()));
         sender.prefillBank(nullToEmpty(draft.iban()), nullToEmpty(draft.bic()));
         applyParty(recipient, draft.recipient());
         lineItems.clear();
@@ -447,6 +450,7 @@ public class MainView extends VerticalLayout {
                         nullToEmpty(address.getZip()), nullToEmpty(address.getCity()),
                         nullToEmpty(address.getCountryCode()), nullToEmpty(address.getVatId()),
                         nullToEmpty(address.getEmail()));
+                form.prefillContact(nullToEmpty(address.getPhone()), nullToEmpty(address.getWebsite()));
                 form.prefillBank(nullToEmpty(address.getIban()), nullToEmpty(address.getBic()));
             }
         });
@@ -545,6 +549,7 @@ public class MainView extends VerticalLayout {
                 "",
                 sender.ibanNormalized(),
                 sender.bicNormalized(),
+                sender.websiteValue(),
                 sender.toParty(), recipient.toParty(),
                 List.copyOf(lineItems),
                 null);
@@ -661,12 +666,20 @@ public class MainView extends VerticalLayout {
     private Map<String, String> buildTemplateVariables(InvoiceMetadata metadata) {
         Map<String, String> variables = new LinkedHashMap<>();
         InvoiceMetadata.Party senderParty = metadata.sender();
+        // Telefon und Webseite kommen aus den Formularfeldern des
+        // Rechnungsstellers; sind sie leer (z. B. alte Vorbelegung), springt
+        // der Adressbuch-Eintrag des Rechnungsstellers ein.
+        Optional<Address> senderAddress = findSenderAddress(senderParty.name());
+        String phone = !senderParty.phone().isBlank() ? senderParty.phone()
+                : senderAddress.map(address -> nullToEmpty(address.getPhone())).orElse("");
+        String website = !sender.websiteValue().isBlank() ? sender.websiteValue()
+                : senderAddress.map(address -> nullToEmpty(address.getWebsite())).orElse("");
         variables.put("masterdata.company_name", senderParty.name());
         variables.put("masterdata.street", senderParty.street());
         variables.put("masterdata.city", senderParty.zip() + " " + senderParty.city());
-        variables.put("masterdata.phone", senderParty.phone());
+        variables.put("masterdata.phone", phone);
         variables.put("masterdata.email", senderParty.email());
-        variables.put("masterdata.website", "");
+        variables.put("masterdata.website", website);
         variables.put("masterdata.sender_line",
                 senderParty.name() + " · " + senderParty.street() + " · " + senderParty.zip() + " " + senderParty.city());
         variables.put("masterdata.payment_terms", metadata.paymentTerms());
@@ -697,6 +710,22 @@ public class MainView extends VerticalLayout {
         return variables;
     }
 
+    /**
+     * @return der Adressbuch-Eintrag des Rechnungsstellers: die Auswahl in
+     *         "Aus dem Adressbuch übernehmen", sonst der Namenstreffer unter
+     *         den Rechnungssteller-Adressen (z. B. nach Laden einer Vorbelegung).
+     */
+    private Optional<Address> findSenderAddress(String senderName) {
+        Address selected = senderAddressSelect.getValue();
+        if (selected != null) {
+            return Optional.of(selected);
+        }
+        String normalized = senderName == null ? "" : senderName.trim();
+        return addressRepository.findByType(AddressType.RECHNUNGSSTELLER).stream()
+                .filter(address -> normalized.equalsIgnoreCase(nullToEmpty(address.getName()).trim()))
+                .findFirst();
+    }
+
     /** Wandelt das Quell-PDF in die ZUGFeRD-E-Rechnung um und bietet das ZIP zum Download an. */
     private void convertAndOfferDownload(byte[] sourcePdf) {
         try {
@@ -823,6 +852,10 @@ public class MainView extends VerticalLayout {
         private final TextField vatId = new TextField("USt-IdNr.");
         private final EmailField email = new EmailField("E-Mail");
 
+        // Kontaktangaben; nur beim Rechnungssteller sichtbar und optional
+        private final TextField phone = new TextField("Telefon");
+        private final TextField website = new TextField("Webseite");
+
         // Bankverbindung; nur beim Rechnungssteller sichtbar und Pflicht
         private final TextField iban = new TextField("IBAN");
         private final TextField bic = new TextField("BIC");
@@ -849,11 +882,12 @@ public class MainView extends VerticalLayout {
             email.addValueChangeListener(event -> checkEmail());
             add(name, street, zip, city, countryCode, vatId, email);
             if (vatRequired) {
+                website.setHelperText("z. B. www.assecutor.de");
                 iban.setRequired(true);
                 iban.setHelperText("Für die Zahlungsangaben (BG-16)");
                 bic.setRequired(true);
                 bic.setHelperText("8 oder 11 Stellen, z. B. NOLADE21RZB");
-                add(iban, bic);
+                add(phone, website, iban, bic);
             }
             setResponsiveSteps(new ResponsiveStep("0", 1), new ResponsiveStep("600px", 3));
         }
@@ -864,6 +898,16 @@ public class MainView extends VerticalLayout {
             bic.setValue(bicValue);
         }
 
+        /** Belegt Telefon und Webseite vor, z. B. aus dem Adressbuch. */
+        void prefillContact(String phoneValue, String websiteValue) {
+            phone.setValue(phoneValue);
+            website.setValue(websiteValue);
+        }
+
+        String websiteValue() {
+            return website.getValue().trim();
+        }
+
         /** IBAN ohne Leerzeichen in Großschreibung. */
         String ibanNormalized() {
             return iban.getValue().replaceAll("\\s", "").toUpperCase();
@@ -906,6 +950,8 @@ public class MainView extends VerticalLayout {
             countryCode.addValueChangeListener(event -> listener.run());
             vatId.addValueChangeListener(event -> listener.run());
             email.addValueChangeListener(event -> listener.run());
+            phone.addValueChangeListener(event -> listener.run());
+            website.addValueChangeListener(event -> listener.run());
             iban.addValueChangeListener(event -> listener.run());
             bic.addValueChangeListener(event -> listener.run());
         }
@@ -913,6 +959,7 @@ public class MainView extends VerticalLayout {
         /** Leert alle Felder; das Land behält den Standardwert "DE". */
         void clearFields() {
             prefill("", "", "", "", "DE", "", "");
+            prefillContact("", "");
             prefillBank("", "");
             name.setInvalid(false);
             street.setInvalid(false);
@@ -995,7 +1042,7 @@ public class MainView extends VerticalLayout {
                     countryCode.getValue().trim().toUpperCase(),
                     vatId.isEmpty() ? "" : VatIdValidator.normalize(vatId.getValue()),
                     email.getValue().trim(),
-                    ""
+                    phone.getValue().trim()
             );
         }
     }