fix(07): UAT fixes — SMTP test email, DKV routing, Exchange domain field

- SMTP: add test-to field, send real email via sendMail() instead of verify()
- SMTP: fix no_auth warning shown as error for open-relay servers
- DKV: register dkv-fleet in MODULE_REGISTRY (fixes "Modul nicht gefunden")
- DKV: add dynamic [category]/[moduleSlug]/settings + vehicles sub-routes
- DKV: settings/vehicles links use useParams for consistent URLs
- DKV: add gear icon settings link to module main page
- DKV: rename module to "DKV-Rechnung" in seed + translations
- DKV: add optional domain field for Exchange (WebCredentials 3rd arg)
- DKV: hide IMAP-only fields (Port/Verschlüsselung/Ordner) when Exchange selected
- DKV: hide Exchange-only field (Domain) when IMAP selected
- Prisma: add domain column to DkvModuleConfig

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

apps/api/src/dkv/dkv.seed.ts

@@ -14,7 +14,7 @@ export async function seedDkvModule(
 ): Promise<void> {
   await moduleRegistryService.seedModule({
     slug: 'dkv-fleet',
-    name: 'DKV Flotte',
+    name: 'DKV-Rechnung',
     version: '1.0.0',
     category: 'fleet',
     description: {

apps/api/src/dkv/dkv.service.ts

@@ -34,6 +34,7 @@ const CONFIG_SAFE_SELECT = {
   isActive: true,
   exportRecipient: true,
   vehicleFormatString: true,
+  domain: true,
   // encryptedInboxCreds: NEVER included — T-07-12
   createdAt: true,
   updatedAt: true,
@@ -156,6 +157,7 @@ export class DkvService {
       ...(dto.isActive !== undefined && { isActive: dto.isActive }),
       ...(dto.exportRecipient !== undefined && { exportRecipient: dto.exportRecipient }),
       ...(dto.vehicleFormatString !== undefined && { vehicleFormatString: dto.vehicleFormatString }),
+      ...(dto.domain !== undefined && { domain: dto.domain }),
       ...(encryptedInboxCreds !== undefined && { encryptedInboxCreds }),
     };
 
@@ -201,6 +203,7 @@ export class DkvService {
       encryption: dto.encryption,
       folder: dto.folder ?? 'INBOX',
       senderFilter: dto.senderFilter,
+      domain: dto.domain,
     };
 
     const provider = dto.protocol === 'exchange' ? this.exchangeProvider : this.imapProvider;

apps/api/src/dkv/dkv.types.ts

@@ -59,6 +59,8 @@ export interface InboxConfig {
   folder: string;
   /** Sender filter: only process emails from this address */
   senderFilter?: string;
+  /** Exchange only: Windows domain (e.g. "CONTOSO") */
+  domain?: string;
 }
 
 /**

apps/api/src/dkv/dto/dkv-config.dto.ts

@@ -100,6 +100,10 @@ export class DkvConfigDto {
   /**
    * Inbox username (stored encrypted; cleared after save).
    */
+  @IsOptional()
+  @IsString()
+  domain?: string;
+
   @IsOptional()
   @IsString()
   username?: string;

apps/api/src/dkv/providers/exchange-inbox.provider.ts

@@ -222,6 +222,7 @@ export class ExchangeInboxProvider implements InboxProvider {
     service.Credentials = new ews.WebCredentials(
       config.username ?? '',
       config.password ?? '',
+      config.domain ?? undefined,
     );
     return service;
   }