fix(tests,langchain,demo): namespace FtsFuzzyTest, pass params to cypher, clarify README

Namespace FtsFuzzyTest label with uid() suffix for isolation parity with
the other two FTS tests (FtsTest_ and FtsHybridTest_ already namespaced).

Pass explicit empty params dict {} to the cypher() call in refresh_schema()
so injected clients without a default params argument don't raise TypeError.

Explicitly name demo/docker-compose.yml in demo/README.md so the file is
unambiguous in PR review context (only README was new in this PR; the
compose file was pre-existing and not visible in the diff). Also add
missing "cd demo/" to the OpenAI code block to ensure the correct
compose file is targeted.

Author: polaz

demo/README.md

@@ -16,6 +16,8 @@ Interactive notebooks for LlamaIndex, LangChain, and LangGraph integrations.
 
 ## Run locally (Docker Compose)
 
+`demo/docker-compose.yml` provides a CoordiNode + Jupyter Lab stack:
+
 ```bash
 cd demo/
 docker compose up -d --build
@@ -34,5 +36,6 @@ Notebooks 02 and 03 have optional sections that use `OPENAI_API_KEY`.
 They auto-skip when the key is absent — all core features work without LLM.
 
 ```bash
+cd demo/
 OPENAI_API_KEY=sk-... docker compose up -d
 ```

langchain-coordinode/langchain_coordinode/graph.py

@@ -153,7 +153,8 @@ def refresh_schema(self) -> None:
         # Note: can simplify to labels(a)[0] once subscript-on-function support lands in the
         # published Docker image (tracked in G010 / GAPS.md).
         rows = self._client.cypher(
-            "MATCH (a)-[r]->(b) RETURN DISTINCT labels(a) AS src_labels, type(r) AS rel, labels(b) AS dst_labels"
+            "MATCH (a)-[r]->(b) RETURN DISTINCT labels(a) AS src_labels, type(r) AS rel, labels(b) AS dst_labels",
+            {},
         )
         if rows:
             triples: set[tuple[str, str, str]] = set()

tests/integration/test_sdk.py

@@ -626,19 +626,20 @@ def test_text_search_empty_for_unindexed_label(client):
 @_fts
 def test_text_search_fuzzy(client):
     """text_search() with fuzzy=True matches approximate terms."""
+    label = f"FtsFuzzyTest_{uid()}"
     tag = uid()
     client.cypher(
-        "CREATE (n:FtsFuzzyTest {tag: $tag, body: 'coordinode graph database'})",
+        f"CREATE (n:{label} {{tag: $tag, body: 'coordinode graph database'}})",
         params={"tag": tag},
     )
     try:
         # "coordinode" with a typo — fuzzy should still match
-        results = client.text_search("FtsFuzzyTest", "coordinod", fuzzy=True, limit=5)
+        results = client.text_search(label, "coordinod", fuzzy=True, limit=5)
         assert isinstance(results, list)
         # May return 0 results if fuzzy is not yet supported or index is cold;
         # just verify the call does not raise.
     finally:
-        client.cypher("MATCH (n:FtsFuzzyTest {tag: $tag}) DELETE n", params={"tag": tag})
+        client.cypher(f"MATCH (n:{label} {{tag: $tag}}) DELETE n", params={"tag": tag})
 
 
 @_fts