Add Ollama embedding support and improve prayer system with public/private visibility

- Add Ollama fallback support in vector search with Azure OpenAI as primary
- Enhance prayer system with public/private visibility options and language filtering
- Update OG image to use new biblical-guide-og-image.png
- Improve prayer request management with better categorization
- Remove deprecated ingest_json_pgvector.py script

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

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

app/api/admin/content/prayer-requests/route.ts

@@ -50,6 +50,8 @@ export async function GET(request: Request) {
         category: true,
         author: true,
         isAnonymous: true,
+        isPublic: true,
+        language: true,
         prayerCount: true,
         isActive: true,
         createdAt: true,
@@ -84,4 +86,4 @@ export async function GET(request: Request) {
       { status: 500 }
     );
   }
-}
+}