Integrate self-hosted Supabase with mem0 system

- Configure mem0 to use self-hosted Supabase instead of Qdrant for vector storage
- Update docker-compose to connect containers to localai network
- Install vecs library for Supabase pgvector integration
- Create comprehensive test suite for Supabase + mem0 integration
- Update documentation to reflect Supabase configuration
- All containers now connected to shared localai network
- Successful vector storage and retrieval tests completed

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

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

.env.example

@@ -0,0 +1,14 @@
+# OpenAI Configuration (for initial testing)
+OPENAI_API_KEY=your_openai_api_key_here
+
+# Supabase Configuration
+SUPABASE_URL=your_supabase_url_here
+SUPABASE_ANON_KEY=your_supabase_anon_key_here
+
+# Neo4j Configuration
+NEO4J_URI=bolt://localhost:7687
+NEO4J_USERNAME=neo4j
+NEO4J_PASSWORD=your_neo4j_password_here
+
+# Ollama Configuration
+OLLAMA_BASE_URL=http://localhost:11434