Update documentation: Replace Qdrant with Supabase references

- Updated vector store provider references throughout documentation
- Changed default vector store from Qdrant to Supabase (pgvector)
- Updated configuration examples to use Supabase connection strings
- Modified navigation structure to remove qdrant-specific references
- Updated examples in mem0-with-ollama and llama-index integration
- Corrected API reference and architecture documentation

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

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

docs/integrations/llama-index.mdx

@@ -69,11 +69,10 @@ Set your Mem0 OSS by providing configuration details:
 ```python
 config = {
     "vector_store": {
-        "provider": "qdrant",
+        "provider": "supabase",
         "config": {
-            "collection_name": "test_9",
-            "host": "localhost",
-            "port": 6333,
+            "connection_string": "postgresql://supabase_admin:your_password@localhost:5435/postgres",
+            "collection_name": "memories",
             "embedding_model_dims": 1536,  # Change this according to your local model's dimensions
         },
     },