test(integration): mark vector_search test as passing (RPC now wired)

VectorServiceImpl now executes Cypher with vector_distance() ORDER BY LIMIT
instead of returning an empty stub response. Remove xfail marker.

Author: polaz

pyproject.toml

@@ -6,6 +6,9 @@
 name = "coordinode-workspace"
 version = "0.0.0"
 requires-python = ">=3.11"
+dependencies = [
+    "googleapis-common-protos>=1.74.0",
+]
 
 [tool.uv]
 package = false  # virtual root — not installed as a package

tests/integration/test_sdk.py

@@ -271,13 +271,6 @@ async def test_async_create_node():
 # ── Vector search (xfail until wired) ─────────────────────────────────────────
 
 
-@pytest.mark.xfail(
-    reason=(
-        "VectorServiceImpl is a stub — always returns []."
-        " HNSW is implemented in coordinode-vector but not wired to the RPC handler."
-    ),
-    strict=True,
-)
 def test_vector_search_returns_results(client):
     tag = uid()
     vec = [float(i) / 16 for i in range(16)]