fix(mail): robust recipient logic and sentry dsn verification

.gitea/workflows/deploy.yml

@@ -280,6 +280,7 @@ jobs:
           GATEKEEPER_ORIGIN="$NEXT_PUBLIC_BASE_URL/gatekeeper"
 
           # Generate Environment File
+          echo "🔍 Verifying Sentry DSN: ${SENTRY_DSN:0:12}... (masked)"
           cat > .env.deploy << EOF
           # Generated by CI - $TARGET
           IMAGE_TAG=$IMAGE_TAG

app/api/contact/route.ts

@@ -82,6 +82,18 @@ export async function POST(req: Request) {
       const { config } = await import("@/lib/config");
       const clientName = "MB Grid Solutions";
 
+      // Robust recipient resolution
+      const recipients = Array.isArray(config.mail.recipients)
+        ? config.mail.recipients.filter(Boolean)
+        : [];
+      
+      const to =
+        recipients.length > 0
+          ? recipients.join(",")
+          : process.env.CONTACT_RECIPIENT || "info@mb-grid-solutions.com";
+
+      logger.info("Preparing to send notification email", { to });
+
       // 2a. Notification to MB Grid
       const notificationHtml = await render(
         React.createElement(ContactFormNotification, {
@@ -94,10 +106,7 @@ export async function POST(req: Request) {
 
       await payload.sendEmail({
         from: config.mail.from,
-        to:
-          config.mail.recipients.join(",") ||
-          process.env.CONTACT_RECIPIENT ||
-          "info@mb-grid-solutions.com",
+        to,
         replyTo: email,
         subject: `Kontaktanfrage von ${name}`,
         html: notificationHtml,