feat: implement reading progress tracking system

Database & API:
- Enhanced ReadingHistory model with versionId field and unique constraint per user/version
- Created /api/user/reading-progress endpoint (GET/POST) for saving and retrieving progress
- Upsert operation ensures one reading position per user per Bible version

Bible Reader Features:
- Auto-save reading position after 2 seconds of inactivity
- Auto-restore last reading position on page load (respects URL parameters)
- Visual progress bar showing completion percentage based on chapters read
- Calculate progress across entire Bible (current chapter / total chapters)
- Client-side only loading to prevent hydration mismatches

Bug Fixes:
- Remove 200 version limit when loading "all versions" - now loads ALL versions
- Fix version selection resetting to favorite when user manually selects different version
- Transform books API response to include chaptersCount property
- Update service worker cache version to force client updates
- Add comprehensive SEO URL logging for debugging 404 issues

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

app/[locale]/bible/[version]/[book]/[chapter]/page.tsx

@@ -15,6 +15,8 @@ interface PageProps {
 // Helper function to convert readable names to IDs
 async function getResourceIds(versionSlug: string, bookSlug: string, chapterNum: string) {
   try {
+    console.log('[SEO URL] Looking for version:', versionSlug, 'book:', bookSlug, 'chapter:', chapterNum)
+
     // Find version by abbreviation (slug)
     const version = await prisma.bibleVersion.findFirst({
       where: {
@@ -26,9 +28,12 @@ async function getResourceIds(versionSlug: string, bookSlug: string, chapterNum:
     })
 
     if (!version) {
+      console.log('[SEO URL] Version not found:', versionSlug)
       return null
     }
 
+    console.log('[SEO URL] Found version:', version.abbreviation, version.id)
+
     // Find book by bookKey (slug) within this version
     const book = await prisma.bibleBook.findFirst({
       where: {
@@ -41,12 +46,23 @@ async function getResourceIds(versionSlug: string, bookSlug: string, chapterNum:
     })
 
     if (!book) {
+      console.log('[SEO URL] Book not found for bookKey:', bookSlug, 'in version:', version.abbreviation)
+      // List available books for debugging
+      const availableBooks = await prisma.bibleBook.findMany({
+        where: { versionId: version.id },
+        select: { bookKey: true, name: true },
+        take: 5
+      })
+      console.log('[SEO URL] Sample available books:', availableBooks)
       return null
     }
 
+    console.log('[SEO URL] Found book:', book.name, book.id)
+
     // Validate chapter number
     const chapter = parseInt(chapterNum)
     if (isNaN(chapter) || chapter < 1) {
+      console.log('[SEO URL] Invalid chapter number:', chapterNum)
       return null
     }
 
@@ -59,9 +75,12 @@ async function getResourceIds(versionSlug: string, bookSlug: string, chapterNum:
     })
 
     if (!chapterRecord) {
+      console.log('[SEO URL] Chapter not found:', chapter, 'in book:', book.name)
       return null
     }
 
+    console.log('[SEO URL] Successfully resolved:', version.abbreviation, book.name, chapter)
+
     return {
       versionId: version.id,
       bookId: book.id,
@@ -70,7 +89,7 @@ async function getResourceIds(versionSlug: string, bookSlug: string, chapterNum:
       book: book
     }
   } catch (error) {
-    console.error('Error resolving resource IDs:', error)
+    console.error('[SEO URL] Error resolving resource IDs:', error)
     return null
   }
 }