Add notify-on-answer email and save-as-image for Q&A; v1.0.10

- Contact form: notifyOnAnswer checkbox (shown for Bible Questions only)
- Contact route: stores notifyOnAnswer flag on question record
- Email: buildQuestionAnsweredEmailTemplate for branded notification
- Questions route: sends notification email on approve when notifyOnAnswer + email + answer are set
- Q&A section: Canvas API "Save as image" button generates 1080x1080 PNG quote card

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

server/routes/questions.js

@@ -3,6 +3,9 @@ import { requireAdminAuth } from '../auth.js'
 import { MAX_QUESTIONS } from '../config.js'
 import { state } from '../state.js'
 import { queueQuestionsWrite, queueDraftQuestionsWrite } from '../data.js'
+import { buildQuestionAnsweredEmailTemplate, getResendFromAddress, getResendReplyToAddress, sendResendEmailWithRetry, getCanonicalBaseUrl } from '../email.js'
+import { buildAbsoluteUrl } from '../helpers.js'
+import { Resend } from 'resend'
 
 function ensureDraftQuestions() {
   if (state.draftQuestions !== null) return
@@ -103,6 +106,29 @@ export function register(app) {
     question.approvedAt = approved === true ? new Date().toISOString() : null
     queueDraftQuestionsWrite()
 
+    if (approved === true && question.notifyOnAnswer && question.email && question.answer) {
+      try {
+        const resend = new Resend(process.env.RESEND_API_KEY)
+        const from = getResendFromAddress()
+        const replyTo = getResendReplyToAddress()
+        const baseUrl = getCanonicalBaseUrl()
+        const questionUrl = buildAbsoluteUrl(baseUrl, `/questions#qa-${question.id}`)
+        const template = buildQuestionAnsweredEmailTemplate({
+          firstName: question.firstName,
+          question: question.question,
+          answer: question.answer,
+          questionUrl,
+        })
+        await sendResendEmailWithRetry({
+          resend,
+          payload: { from, replyTo, to: question.email, subject: template.subject, text: template.text, html: template.html },
+          context: `notify-on-answer:${question.id}`,
+        })
+      } catch (err) {
+        console.error('[notify-on-answer] Failed to send notification email:', err?.message ?? err)
+      }
+    }
+
     res.json({ ok: true, question })
   })