Fix bible reader version filtering and improve UI

- Fix API to show all 1416+ bible versions with language filtering toggle
- Add default language-specific filtering with option to show all versions
- Fix books API to work with cross-language version selection
- Add toggle button with visual feedback and version count display
- Improve dropdown scrolling and add language indicators
- Maintain backward compatibility while fixing core functionality

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

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

app/api/bible/versions/route.ts

@@ -6,7 +6,7 @@ export const runtime = 'nodejs'
 export async function GET(request: Request) {
   try {
     const { searchParams } = new URL(request.url)
-    const locale = (searchParams.get('locale') || 'ro').toLowerCase()
+    const locale = (searchParams.get('locale') || searchParams.get('language') || 'ro').toLowerCase()
     const showAll = searchParams.get('all') === 'true'
 
     let whereClause = {}