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

src/components/QASection.tsx

@@ -349,8 +349,10 @@ function semanticScoreForQuestion(question: PublicQuestion, tags: string[], quer
   const normalized = query.trim().toLowerCase()
   if (!normalized) return 0
 
+  // Note: tokenize() drops tokens of length <= 2 (e.g. "OT", "AI"), so queryTokens can be
+  // empty for short queries — fall through to the substring checks below rather than
+  // bailing out, so short queries can still match via direct substring inclusion.
   const queryTokens = tokenize(normalized)
-  if (queryTokens.length === 0) return 0
 
   const expanded = expandQueryTokens(queryTokens)
   const questionTokens = new Set(tokenize(`${question.question} ${question.answer} ${question.topic ?? ''} ${tags.join(' ')}`))

src/components/StudySectionComments.tsx

@@ -71,10 +71,14 @@ export function StudySectionComments({ studySlug, sectionId, isEnrolled }: Props
   async function handleDelete(commentId: string) {
     setDeletingId(commentId)
     try {
-      await fetch(`/api/study-comments/${commentId}`, { method: 'DELETE' })
+      const res = await fetch(`/api/study-comments/${commentId}`, { method: 'DELETE' })
+      if (!res.ok) {
+        setError('Could not delete that comment.')
+        return
+      }
       setComments(prev => prev.filter(c => c.id !== commentId))
     } catch {
-      // ignore
+      setError('Network error. Please try again.')
     } finally {
       setDeletingId(null)
     }