Fix email links using relative paths — prepend baseUrl for absolute URLs

Relative linkUrl paths (e.g. /jury/competitions) were passed as-is to
email templates, causing email clients to interpret them as local file
protocols (x-webdoc:// on macOS). Now prepends NEXTAUTH_URL to any
relative path before sending.

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

src/server/services/in-app-notification.ts

@@ -426,6 +426,10 @@ async function maybeSendEmailWithSetting(
       return
     }
 
+    // Ensure linkUrl is absolute for emails (relative paths break in email clients)
+    const baseUrl = process.env.NEXTAUTH_URL || 'https://portal.monaco-opc.com'
+    const absoluteLinkUrl = linkUrl && linkUrl.startsWith('/') ? `${baseUrl}${linkUrl}` : linkUrl
+
     await sendStyledNotificationEmail(
       user.email,
       user.name || 'User',
@@ -433,7 +437,7 @@ async function maybeSendEmailWithSetting(
       {
         title,
         message,
-        linkUrl,
+        linkUrl: absoluteLinkUrl,
         metadata,
       },
       emailSetting.emailSubject || undefined