feat(invite): skip Resend dispatch when ALLOW_DEV_TEST_ENDPOINTS=true

Pre-registrant invite was the only email route calling Resend directly
(bypassing server/utils/resend.js), so dev/e2e runs were dispatching
real email. Gate just the network call; DB updates (jti, status,
activity log) still run. Mirrors the bypass pattern in
server/middleware/03.rate-limit.js.

Other email routes via server/utils/resend.js still send live in dev
mode — wrapper refactor tracked in BACKLOG.

server/api/admin/pre-registrants/invite.post.js

@@ -63,10 +63,15 @@ export default defineEventHandler(async (event) => {
         .replace(/\n/g, '<br>')
         .replace(/\{acceptLink\}/g, acceptButton)
 
+      const subject = "You're invited to Ghost Guild! 👻"
+
+      if (process.env.ALLOW_DEV_TEST_ENDPOINTS === 'true') {
+        console.log('[resend] DEV MODE — skipping invite send', { to: preReg.email, subject })
+      } else {
         const { error: emailError } = await resend.emails.send({
           from: 'Ghost Guild <welcome@babyghosts.org>',
           to: [preReg.email],
-        subject: "You're invited to Ghost Guild! 👻",
+          subject,
           text: emailText,
           html: emailHtml,
         })
@@ -75,6 +80,7 @@ export default defineEventHandler(async (event) => {
           results.push({ preRegistrantId: preReg._id, email: preReg.email, success: false, error: emailError.message })
           continue
         }
+      }
 
       await PreRegistration.findByIdAndUpdate(preReg._id, {
         $set: {