Knowledge core processing updated for embeddings interface change (#681)

Knowledge core fixed: 
- trustgraph-flow/trustgraph/tables/knowledge.py - v.vector, v.chunk_id
- trustgraph-base/trustgraph/messaging/translators/document_loading.py -
  chunk.vector
- trustgraph-base/trustgraph/messaging/translators/knowledge.py -
  entity.vector
- trustgraph-flow/trustgraph/gateway/dispatch/serialize.py - entity.vector,
  chunk.vector

Test fixtures fixed:
- tests/unit/test_storage/conftest.py - All mock entities/chunks use vector
- tests/unit/test_query/conftest.py - All mock requests use vector
- tests/unit/test_query/test_doc_embeddings_pinecone_query.py - All mock
  messages use vector

These changes align with commit f2ae0e86 which changed the schema from
vectors: list[list[float]] to vector: list[float].

trustgraph-flow/trustgraph/gateway/dispatch/serialize.py

@@ -54,7 +54,7 @@ def serialize_graph_embeddings(message):
         },
         "entities": [
             {
-                "vectors": entity.vectors,
+                "vector": entity.vector,
                 "entity": serialize_value(entity.entity),
             }
             for entity in message.entities
@@ -88,7 +88,7 @@ def serialize_document_embeddings(message):
         },
         "chunks": [
             {
-                "vectors": chunk.vectors,
+                "vector": chunk.vector,
                 "chunk_id": chunk.chunk_id,
             }
             for chunk in message.chunks

trustgraph-flow/trustgraph/tables/knowledge.py

@@ -272,7 +272,7 @@ class KnowledgeTableStore:
         entities = [
             (
                 term_to_tuple(v.entity),
-                v.vectors
+                v.vector
             )
             for v in m.entities
         ]
@@ -313,8 +313,8 @@ class KnowledgeTableStore:
 
         chunks = [
             (
-                v.chunk,
-                v.vectors,
+                v.chunk_id,
+                v.vector,
             )
             for v in m.chunks
         ]