release/v2.4 -> master (#924)

* CLI auth migration, document embeddings core lifecycle (#913)

Migrate get_kg_core and put_kg_core CLI tools to use Api/SocketClient
with first-frame auth (fixes broken raw websocket path). Fix wire
format field names (root/vector). Remove ~600 lines of dead raw
websocket code from invoke_graph_rag.py.

Add document embeddings core lifecycle to the knowledge service:
list/get/put/delete/load operations across schema, translator,
Cassandra table store, knowledge manager, gateway registry, REST API,
socket client, and CLI (tg-get-de-core, tg-put-de-core).

Fix delete_kg_core to also clean up document embeddings rows.

* Remove spurious workspace parameter from SPARQL algebra evaluator (#915)

Fix threading of workspace paramater:
- The SPARQL algebra evaluator was threading a workspace parameter
  through every function and passing it to TriplesClient.query(),
  which doesn't accept it. Workspace isolation is handled by pub/sub
  topic routing — the TriplesClient is already scoped to a
  workspace-specific flow, same as GraphRAG. Passing workspace
  explicitly was both incorrect and unnecessary.

Update tests:
- tests/unit/test_query/test_sparql_algebra.py (new) — Tests
  _query_pattern, _eval_bgp, and evaluate() with various algebra
  nodes. Key tests assert workspace is never in tc.query() kwargs,
  plus correctness tests for BGP, JOIN, UNION, SLICE, DISTINCT, and
  edge cases.
- tests/unit/test_retrieval/test_graph_rag.py — Added
  test_triples_query_never_passes_workspace (checks query()) and
  test_follow_edges_never_passes_workspace (checks query_stream()).

* Make all Cassandra and Qdrant I/O async-safe with proper concurrency controls (#916)

Cassandra triples services were using syncronous EntityCentricKnowledgeGraph
methods from async contexts, and connection state was managed with
threading.local which is wrong for asyncio coroutines sharing a single
thread. Qdrant services had no async wrapping at all, blocking the event
loop on every network call. Rows services had unprotected shared state
mutations across concurrent coroutines.

- Add async methods to EntityCentricKnowledgeGraph (async_insert,
  async_get_s/p/o/sp/po/os/spo/all, async_collection_exists,
  async_create_collection, async_delete_collection) using the existing
  cassandra_async.async_execute bridge
- Rewrite triples write + query services: replace threading.local with
  asyncio.Lock + dict cache for per-workspace connections, use async
  ECKG methods for all data operations, keep asyncio.to_thread only for
  one-time blocking ECKG construction
- Wrap all Qdrant calls in asyncio.to_thread across all 6 services
  (doc/graph/row embeddings write + query), add asyncio.Lock + set cache
  for collection existence checks
- Add asyncio.Lock to rows write + query services to protect shared
  state (schemas, sessions, config caches) from concurrent mutation
- Update all affected tests to match new async patterns

* Fixed error only returning a page of results (#921)

The root cause: async_execute only materialises the first result
page (by design — it says so in its docstring). The streaming query
set fetch_size=20 and expected to iterate all results, but only got
the first 20 rows back.

The fix uses
  asyncio.to_thread(lambda: list(tg.session.execute(...)))
which lets the sync driver iterate
all pages in a worker thread — exactly what the pre-async code did.

* Optional test warning suppression (#923)

* Fix test collection module errors & silence upstream Pytest warnings (#823)

* chore: add virtual environment and .env directories to gitignore

* test: filter upstream DeprecationWarning and UserWarning messages

* fix(namespace): remove empty __init__.py files to fix PEP 420 implicit namespace routing for trustgraph sub-packages

* Revert __init__.py deletions

* Add .ini changes but commented out, will be useful at times

---------

Co-authored-by: Salil M <d2kyt@protonmail.com>

tests/unit/test_reliability/test_null_embedding_protection.py

@@ -113,12 +113,15 @@ class TestDocEmbeddingsNullProtection:
 
     @pytest.mark.asyncio
     async def test_valid_embedding_upserted(self):
+        import asyncio
         from trustgraph.storage.doc_embeddings.qdrant.write import Processor
 
         proc = Processor.__new__(Processor)
         proc.qdrant = MagicMock()
         proc.qdrant.collection_exists.return_value = True
         proc.collection_exists = MagicMock(return_value=True)
+        proc._cache_lock = asyncio.Lock()
+        proc._known_collections = set()
 
         msg = MagicMock()
         msg.metadata.collection = "col1"
@@ -134,12 +137,15 @@ class TestDocEmbeddingsNullProtection:
     @pytest.mark.asyncio
     async def test_dimension_in_collection_name(self):
         """Collection name should include vector dimension."""
+        import asyncio
         from trustgraph.storage.doc_embeddings.qdrant.write import Processor
 
         proc = Processor.__new__(Processor)
         proc.qdrant = MagicMock()
         proc.qdrant.collection_exists.return_value = True
         proc.collection_exists = MagicMock(return_value=True)
+        proc._cache_lock = asyncio.Lock()
+        proc._known_collections = set()
 
         msg = MagicMock()
         msg.metadata.collection = "docs"
@@ -220,12 +226,15 @@ class TestGraphEmbeddingsNullProtection:
 
     @pytest.mark.asyncio
     async def test_valid_entity_and_vector_upserted(self):
+        import asyncio
         from trustgraph.storage.graph_embeddings.qdrant.write import Processor
 
         proc = Processor.__new__(Processor)
         proc.qdrant = MagicMock()
         proc.qdrant.collection_exists.return_value = True
         proc.collection_exists = MagicMock(return_value=True)
+        proc._cache_lock = asyncio.Lock()
+        proc._known_collections = set()
 
         msg = MagicMock()
         msg.metadata.collection = "col1"
@@ -241,12 +250,15 @@ class TestGraphEmbeddingsNullProtection:
 
     @pytest.mark.asyncio
     async def test_lazy_collection_creation_on_new_dimension(self):
+        import asyncio
         from trustgraph.storage.graph_embeddings.qdrant.write import Processor
 
         proc = Processor.__new__(Processor)
         proc.qdrant = MagicMock()
         proc.qdrant.collection_exists.return_value = False
         proc.collection_exists = MagicMock(return_value=True)
+        proc._cache_lock = asyncio.Lock()
+        proc._known_collections = set()
 
         msg = MagicMock()
         msg.metadata.collection = "graphs"