Fix contact form crash, analytics range filter, Scripture Index parsing, and unsafe-delete UI bugs

- server/routes/contact.js: import fireWebhooks (was undefined, throwing on every submission)
- server/routes/analytics.js: filter admin-stats by row.at, the field recordVisitor actually sets, instead of the never-populated row.visitedAt
- src/App.tsx: parseSIRef now supports chapter-spanning verse ranges (e.g. "5:15-6:2"); SI_BOOK_MAP indexes both spaced and unspaced book names so multi-word Bible Book values from the admin field resolve correctly
- src/App.css / src/App.tsx: fix Episodes/Studies nav dropdown menus being unclickable — a positioning gap between the trigger and menu created a hover dead zone; menu is now flush with spacing moved into padding so hover carries through
- src/components/StudySectionComments.tsx: check response status before removing a comment locally, so a rejected delete no longer appears to succeed
- src/components/QASection.tsx: don't bail out of search scoring for 1-2 character queries, so short substrings like "OT" or "AI" can still match
- src/AdminPage.tsx: check response status in study-user, QR code, and episode-script delete handlers before updating local state

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016Yvx4rPVy2HWe7ubuk3X3J

server/routes/contact.js

@@ -15,6 +15,7 @@ import {
   queueDraftQuestionsWrite,
   normalizeContactEmailStatus,
   normalizeMessageType,
+  fireWebhooks,
 } from '../data.js'
 import {
   noteContactEmailCooldown,