Fix Scripture Index doubled/unparseable refs, Titus passage fetch 400, Ko-fi QR 404, auto-load study comments; stop probe URLs inflating Real Hits, real 404 status for unknown URLs; v2.43.1

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

server/study-helpers.js

@@ -476,6 +476,19 @@ export function normalizeHitPath(pathname) {
   return pathname
 }
 
+// Top-level URL segments the SPA / static pages actually serve. Anything else is a probe or
+// scanner hit, which must not count as a real visit or add a new key to the per-path stats.
+const KNOWN_SITE_SEGMENTS = new Set([
+  'start-here', 'study', 'finished', 'episodes', 'nuggets', 'resources', 'downloads', 'about', 'contact',
+  'questions', 'newsletter', 'scripture', 'thanks', 'subscribe', 'certificate', 'host', 'admin', 'preview',
+  'privacy', 'terms', 'salvation', 'qr',
+])
+
+export function isKnownSitePath(pathname) {
+  const first = String(pathname ?? '/').split('/')[1] ?? ''
+  return first === '' || KNOWN_SITE_SEGMENTS.has(first)
+}
+
 export function shouldCountHit(req) {
   if (req.method !== 'GET') return false
   if (req.path.startsWith('/api/')) return false