fix: Qdrant edge creation — use UUID string IDs and empty vectors for payload-only points

src/iai_mcp/qdrant_store.py

@@ -32,7 +32,7 @@ import threading
 from datetime import datetime, timezone
 from pathlib import Path
 from typing import Callable
-from uuid import UUID
+from uuid import UUID, uuid4
 
 from qdrant_client import QdrantClient, models
 from qdrant_client.models import (
@@ -953,10 +953,10 @@ class QdrantStore:
             else:
                 nw = accum_delta
 
-            # Create payload-only point
+            # Create payload-only point (use UUID string for Qdrant compatibility)
             points_to_upsert.append(PointStruct(
-                id=f"{src_str}:{dst_str}:{edge_type}",
-                vector=None,
+                id=str(uuid4()),
+                vector={},
                 payload={
                     "table": EDGES_TABLE,
                     "group_id": self._group_id,
@@ -996,8 +996,8 @@ class QdrantStore:
         self._client.upsert(
             collection_name=METADATA_TABLE,
             points=[PointStruct(
-                id=f"{original}:{new_id}:contradicts",
-                vector=None,
+                id=str(uuid4()),
+                vector={},
                 payload={
                     "table": EDGES_TABLE,
                     "group_id": self._group_id,