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/App.css

@@ -9665,15 +9665,24 @@
 .nav-dropdown-menu {
   display: none;
   position: absolute;
-  top: calc(100% + 0.5rem);
+  /* Flush against the trigger (no gap) so the hover state carries continuously
+     from the trigger into the menu — a visual gap here left a dead zone where
+     the mouse exits .nav-dropdown before reaching the menu, closing it before
+     it could be clicked. The 0.5rem of breathing room is added as padding-top
+     (still inside the hoverable box) instead of a position offset. */
+  top: 100%;
   left: 50%;
   transform: translateX(-50%);
+  padding-top: 0.5rem;
+  min-width: 160px;
+  z-index: 200;
+}
+
+.nav-dropdown-menu-inner {
   background: rgba(15, 15, 12, 0.98);
   border: 1px solid rgba(201, 168, 76, 0.25);
   border-radius: 8px;
   padding: 0.4rem 0;
-  min-width: 160px;
-  z-index: 200;
   box-shadow: 0 8px 24px rgba(0,0,0,0.5);
 }
 
@@ -9923,12 +9932,16 @@
     display: none;
     position: static;
     transform: none;
+    padding-top: 0;
+    min-width: 0;
+  }
+
+  .nav-dropdown-menu-inner {
     background: transparent;
     border: none;
     border-radius: 0;
     padding: 0;
     box-shadow: none;
-    min-width: 0;
   }
 
   .nav-dropdown:hover .nav-dropdown-menu {