Почтовый кабинет: регистрация, папки, черновики, вложения, грид @jambotron/aria-grid, интерфейс по synthwave-шаблону

Бэкенд: регистрация со входом сразу и /api/config, профиль и смена пароля, свои папки, PATCH письма
(прочитано, флажок, перенос; Спам ставит отметку), корзина и очистка, черновики, несколько адресатов и копия,
вложения черновика уходят с письмом, вложения и заголовки To/Cc входящих сохраняются, письма заблокированных —
в Спам. Исправлено: загрузка файла (415), колонка content_id (500 на любых вложениях), SPA-маршрут с точкой.
Фронтенд переписан: все таблицы — грид, оформление — шаблон synthwave-design-showcase.html.

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

backend/src/main/java/com/mailserver/service/LocalDelivery.java

@@ -9,6 +9,7 @@ import jakarta.mail.Part;
 import jakarta.mail.Session;
 import jakarta.mail.internet.InternetAddress;
 import jakarta.mail.internet.MimeMessage;
+import jakarta.mail.internet.MimeUtility;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Value;
@@ -18,6 +19,8 @@ import java.io.ByteArrayInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Properties;
 
 /**
@@ -71,7 +74,61 @@ public class LocalDelivery implements DeliveryWorker.BounceSender {
                     dkim.signed() ? (dkim.passed() ? "pass " + dkim.domain() : "fail") : "none", spf, dmarc, spam ? " → spam" : "");
         }
 
-        mailService.receiveMessage(senderEmail, senderName, mailbox, subject, body.text(), body.html(), spam).block();
+        com.mailserver.domain.Message stored =
+                mailService.receiveMessage(senderEmail, senderName, mailbox, subject, body.text(), body.html(), spam,
+                        addresses(mime, jakarta.mail.Message.RecipientType.TO),
+                        addresses(mime, jakarta.mail.Message.RecipientType.CC)).block();
+        if (stored != null) {
+            for (FilePart file : attachments(mime)) {
+                mailService.storeIncomingAttachment(stored.getId(), file.name(), file.contentType(), file.bytes());
+            }
+        }
+    }
+
+    /** "a@x, b@y" from a header, or null. A broken header is ignored, not a reason to lose the message. */
+    static String addresses(MimeMessage mime, jakarta.mail.Message.RecipientType type) {
+        try {
+            jakarta.mail.Address[] list = mime.getRecipients(type);
+            if (list == null || list.length == 0) {
+                return null;
+            }
+            List<String> result = new ArrayList<>();
+            for (jakarta.mail.Address address : list) {
+                result.add(address instanceof InternetAddress internet ? internet.getAddress() : address.toString());
+            }
+            String joined = String.join(", ", result);
+            return joined.length() > 5000 ? joined.substring(0, 5000) : joined;
+        } catch (MessagingException e) {
+            return null;
+        }
+    }
+
+    record FilePart(String name, String contentType, byte[] bytes) {
+    }
+
+    /** Parts with a file name (attachments and inline images), nested multiparts walked. */
+    static List<FilePart> attachments(Part part) throws MessagingException, IOException {
+        List<FilePart> files = new ArrayList<>();
+        collect(part, files);
+        return files;
+    }
+
+    private static void collect(Part part, List<FilePart> files) throws MessagingException, IOException {
+        if (part.isMimeType("multipart/*") && part.getContent() instanceof Multipart multipart) {
+            for (int i = 0; i < multipart.getCount(); i++) {
+                collect(multipart.getBodyPart(i), files);
+            }
+            return;
+        }
+        String name = part.getFileName();
+        if (name == null && !Part.ATTACHMENT.equalsIgnoreCase(part.getDisposition())) {
+            return;
+        }
+        String decoded = name == null ? "file" : MimeUtility.decodeText(name);
+        String type = part.getContentType() == null ? "application/octet-stream" : part.getContentType().split(";")[0].trim();
+        try (InputStream in = part.getInputStream()) {
+            files.add(new FilePart(decoded, type.toLowerCase(java.util.Locale.ROOT), in.readAllBytes()));
+        }
     }
 
     /** Non-delivery report into the sender's inbox — only when the sender is our mailbox. */
@@ -101,7 +158,7 @@ public class LocalDelivery implements DeliveryWorker.BounceSender {
     }
 
     private static String find(Part part, String type) throws MessagingException, IOException {
-        if (Part.ATTACHMENT.equalsIgnoreCase(part.getDisposition())) {
+        if (Part.ATTACHMENT.equalsIgnoreCase(part.getDisposition()) || part.getFileName() != null) {
             return null;
         }
         if (part.isMimeType(type)) {