Implement Azure OpenAI vector embeddings for Romanian Bible

- Add pgvector support with bible_passages table for vector search
- Create Python ingestion script for Azure OpenAI embed-3 embeddings
- Implement hybrid search combining vector similarity and full-text search
- Update AI chat to use vector search with Azure OpenAI gpt-4o
- Add floating chat component with Material UI design
- Import complete Romanian Bible (FIDELA) with 30K+ verses
- Add vector search library for semantic Bible search
- Create multi-language implementation plan for future expansion

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

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

components/layout/navigation.tsx

@@ -24,7 +24,6 @@ import {
 import {
   Menu as MenuIcon,
   MenuBook,
-  Chat,
   Favorite as Prayer,
   Search,
   AccountCircle,
@@ -37,7 +36,6 @@ import { useRouter } from 'next/navigation'
 const pages = [
   { name: 'Acasă', path: '/', icon: <Home /> },
   { name: 'Biblia', path: '/bible', icon: <MenuBook /> },
-  { name: 'Chat AI', path: '/chat', icon: <Chat /> },
   { name: 'Rugăciuni', path: '/prayers', icon: <Prayer /> },
   { name: 'Căutare', path: '/search', icon: <Search /> },
 ]