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>

types/index.ts

@@ -48,7 +48,9 @@ export interface PrayerRequest {
   userId: string | null
   content: string
   isAnonymous: boolean
+  isPublic: boolean
+  language: string
   prayerCount: number
   createdAt: Date
   updatedAt: Date
-}
+}