Add Tier 2 email features: AI draft, Calendar→Email announce, delivery status, engagement badges; v1.1.24

- EmailPage: useLocation to accept pre-filled compose from Calendar; delivery status pill on sent bubbles; AI Draft button calling ANTHROPIC_API_KEY endpoint
- CalendarPage: useNavigate + announceEpisode(); ✉ Announce button in episode edit popover
- ContactsPage: emailStatus types; unreplied badge; best delivery status pill; engagement score stars
- server/routes/contact.js: POST /api/admin-contact-submissions/:id/draft-reply → Anthropic claude-haiku-4-5

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

package.json

@@ -1,7 +1,7 @@
 {
   "name": "siteforge",
   "private": true,
-  "version": "1.1.23",
+  "version": "1.1.24",
   "type": "module",
   "scripts": {
     "dev": "vite",