Analytics: unique visitors this week + probed-URLs list; Scripture Index: most-studied strip + print; admin warning for unparseable passage references; v2.44.0

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

shared/bible-books.js

@@ -67,7 +67,7 @@ export const BIBLE_BOOKS = [
   { id: 'TH2', name: '2 Thessalonians', aliases: ['2 thess'] },
   { id: 'TI1', name: '1 Timothy', aliases: ['1 tim'] },
   { id: 'TI2', name: '2 Timothy', aliases: ['2 tim'] },
-  { id: 'TIT', name: 'Titus' },
+  { id: 'TIT', name: 'Titus', aliases: ['tit'] },
   { id: 'PHM', name: 'Philemon', aliases: ['philem'] },
   { id: 'HEB', name: 'Hebrews', aliases: ['heb'] },
   { id: 'JAM', name: 'James', aliases: ['jas'] },
@@ -85,3 +85,34 @@ export function bookNumberFor(usfmId) {
   const index = BIBLE_BOOKS.findIndex(b => b.id === usfmId)
   return index === -1 ? null : index + 1
 }
+
+let referenceBookLookup = null
+
+/**
+ * Checks a passage reference the way the Scripture Index and passage fetch read it.
+ * `bookHint` is the study's Bible Book field (or slug) and is used when the reference
+ * has no book of its own ("1:1-2"). Returns null when it will work, otherwise a short
+ * message explaining what to change.
+ */
+export function checkPassageReference(reference, bookHint) {
+  if (!referenceBookLookup) {
+    referenceBookLookup = new Set()
+    for (const b of BIBLE_BOOKS) {
+      for (const key of [b.name.toLowerCase(), ...(b.aliases ?? [])]) {
+        referenceBookLookup.add(key)
+        referenceBookLookup.add(key.replace(/\s+/g, ''))
+      }
+    }
+  }
+  const clean = String(reference ?? '').replace(/[–—]/g, '-').replace(/(\d)[a-z]\b/gi, '$1').trim()
+  if (!clean) return null
+  const m = clean.match(/^(?:(.*?)\s+)?(\d+):(\d+)(?:-(?:(\d+):)?(\d+))?$/)
+  if (!m) return 'Use the form 1:1-2 (chapter:verse, optional range). It will be listed under "Other references" in the Scripture Index until fixed.'
+  const book = (m[1] ?? String(bookHint ?? '')).toLowerCase().replace(/\.\s*/g, ' ').trim()
+  if (!book || !referenceBookLookup.has(book)) {
+    return m[1]
+      ? `"${m[1]}" is not a recognized Bible book name.`
+      : 'Set this study\'s "Bible Book" field (e.g. titus) so this reference can be matched to a book.'
+  }
+  return null
+}