feat: memory system fixes and Redis config cleanup (v1.3.0)

- Fix Qdrant client to use query_points API (qdrant-client >= 1.10)
- Rename REDIS_DB to REDIS_BENCHMARK_DB for clarity
- Update Redis defaults to match stack allocation (benchmark=6, memory=1)

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/core/qdrant.py

@@ -232,14 +232,14 @@ class MemoryQdrantClient:
                     ]
                 )
 
-            # Search
-            results = self._client.search(
+            # Search using new Query API (qdrant-client >= 1.10)
+            results = self._client.query_points(
                 collection_name=collection_name,
-                query_vector=query_vector,
+                query=query_vector,
                 limit=limit,
                 query_filter=query_filter,
                 score_threshold=score_threshold,
-            )
+            ).points
 
             # Format results
             memories = []