feat: Add Qdrant Cloud API key authentication & cluster connection support

config.py

@@ -108,6 +108,8 @@ else:
 # Vector Database Engine Selection ("faiss" or "qdrant")
 VECTOR_STORE_BACKEND = os.getenv("VECTOR_STORE_BACKEND", "faiss").lower()
 QDRANT_STORAGE_PATH = Path(os.getenv("QDRANT_STORAGE_PATH", DATA_DIR / "qdrant_db"))
+QDRANT_API_KEY = os.getenv("QDRANT_API_KEY", "")
+QDRANT_URL = os.getenv("QDRANT_URL", "")
 
 HNSW_M = 32
 HNSW_EF_CONSTRUCTION = 200

vector_search/index_qdrant.py

@@ -180,7 +180,13 @@ class QdrantIndexManager:
         if not HAS_QDRANT:
             raise ImportError("qdrant-client package is required for Qdrant vector backend.")
             
-        if in_memory:
+        qdrant_url = getattr(config, "QDRANT_URL", "")
+        qdrant_key = getattr(config, "QDRANT_API_KEY", "")
+
+        if qdrant_url and qdrant_url.strip():
+            self.client = QdrantClient(url=qdrant_url.strip(), api_key=qdrant_key.strip() if qdrant_key else None)
+            logger.info("Initialized Qdrant Cloud Vector Engine at '%s'.", qdrant_url)
+        elif in_memory:
             self.client = QdrantClient(":memory:")
             logger.info("Initialized Qdrant In-Memory Vector Storage Engine.")
         else: