fix: resolve CI failures — lint errors, pytz in redis, lockfile mismatch

- Remove unused imports: get_update_memory_messages, get_fact_retrieval_messages
- Fix pytz.timezone("US/Pacific") → timezone.utc in redis vector store
- Remove unused entity_types variable in test_entity_extraction
- Regenerate pnpm-lock.yaml after neo4j-driver removal

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

mem0-ts/pnpm-lock.yaml

@@ -59,9 +59,6 @@ importers:
       natural:
         specifier: ^8.0.1
         version: 8.1.1
-      neo4j-driver:
-        specifier: ^5.28.1
-        version: 5.28.1
       ollama:
         specifier: ^0.5.14
         version: 0.5.14
@@ -1127,9 +1124,6 @@ packages:
   buffer@5.7.1:
     resolution: {integrity: sha512-EHcyIPBQ4BSGlvjB16k5KgAJ27CIsHY/2JBmCRReo48y9rQ3MaUzWX3KVlBa4U7MyX02HdVj0K7C3WaB3ju7FQ==}
 
-  buffer@6.0.3:
-    resolution: {integrity: sha512-FTiCpNxtwiZZHEZbcbTIcZjERVICn9yq/pDFkTl95/AxzD1naBctN7YO68riM/gLSDY7sdrMby8hofADYuuqOA==}
-
   bundle-name@4.1.0:
     resolution: {integrity: sha512-tjwM5exMg6BGRI+kNmTntNsvdZS1X8BFYS6tnJ2hdH0kVxM6/eVZ2xy+FqStSWvYmtfFMDLIxurorHwDKfDz5Q==}
     engines: {node: '>=18'}
@@ -2281,15 +2275,6 @@ packages:
     resolution: {integrity: sha512-8Ofs/AUQh8MaEcrlq5xOX0CQ9ypTF5dl78mjlMNfOK08fzpgTHQRQPBxcPlEtIw0yRpws+Zo/3r+5WRby7u3Gg==}
     engines: {node: '>= 0.6'}
 
-  neo4j-driver-bolt-connection@5.28.1:
-    resolution: {integrity: sha512-nY8GBhjOW7J0rDtpiyJn6kFdk2OiNVZZhZrO8//mwNXnf5VQJ6HqZQTDthH/9pEaX0Jvbastz1xU7ZL8xzqY0w==}
-
-  neo4j-driver-core@5.28.1:
-    resolution: {integrity: sha512-14vN8TlxC0JvJYfjWic5PwjsZ38loQLOKFTXwk4fWLTbCk6VhrhubB2Jsy9Rz+gM6PtTor4+6ClBEFDp1q/c8g==}
-
-  neo4j-driver@5.28.1:
-    resolution: {integrity: sha512-jbyBwyM0a3RLGcP43q3hIxPUPxA+1bE04RovOKdNAS42EtBMVCKcPSeOvWiHxgXp1ZFd0a8XqK+7LtguInOLUg==}
-
   node-abi@3.74.0:
     resolution: {integrity: sha512-c5XK0MjkGBrQPGYG24GBADZud0NCbznxNx0ZkS+ebUTrmV1qTDxPxSL8zEAPURXSbLRWVexxmP4986BziahL5w==}
     engines: {node: '>=10'}
@@ -2714,9 +2699,6 @@ packages:
   run-parallel@1.2.0:
     resolution: {integrity: sha512-5l4VyZR86LZ/lDxZTR6jqL8AFE2S0IFLMP26AbjsLVADxHdhB/c0GUsH+y39UfCi3dzz8OlQuPmnaJOMoDHQBA==}
 
-  rxjs@7.8.2:
-    resolution: {integrity: sha512-dhKf903U/PQZY6boNNtAGdWbG85WAbjT/1xYoZIC7FAY0yWapOBQVsVrDl58W86//e1VpMNBtRV4MaXfdMySFA==}
-
   safe-buffer@5.2.1:
     resolution: {integrity: sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ==}
 
@@ -4410,11 +4392,6 @@ snapshots:
       base64-js: 1.5.1
       ieee754: 1.2.1
 
-  buffer@6.0.3:
-    dependencies:
-      base64-js: 1.5.1
-      ieee754: 1.2.1
-
   bundle-name@4.1.0:
     dependencies:
       run-applescript: 7.1.0
@@ -5746,20 +5723,6 @@ snapshots:
 
   negotiator@1.0.0: {}
 
-  neo4j-driver-bolt-connection@5.28.1:
-    dependencies:
-      buffer: 6.0.3
-      neo4j-driver-core: 5.28.1
-      string_decoder: 1.3.0
-
-  neo4j-driver-core@5.28.1: {}
-
-  neo4j-driver@5.28.1:
-    dependencies:
-      neo4j-driver-bolt-connection: 5.28.1
-      neo4j-driver-core: 5.28.1
-      rxjs: 7.8.2
-
   node-abi@3.74.0:
     dependencies:
       semver: 7.7.1
@@ -6197,10 +6160,6 @@ snapshots:
     dependencies:
       queue-microtask: 1.2.3
 
-  rxjs@7.8.2:
-    dependencies:
-      tslib: 2.8.1
-
   safe-buffer@5.2.1: {}
 
   safe-stable-stringify@2.5.0: {}

mem0/memory/main.py

@@ -20,7 +20,6 @@ from mem0.configs.prompts import (
     AGENT_CONTEXT_SUFFIX,
     generate_additive_extraction_prompt,
     PROCEDURAL_MEMORY_SYSTEM_PROMPT,
-    get_update_memory_messages,
 )
 from mem0.utils.lemmatization import lemmatize_for_bm25
 from mem0.utils.entity_extraction import extract_entities, extract_entities_batch
@@ -32,7 +31,6 @@ from mem0.memory.storage import SQLiteManager
 from mem0.memory.telemetry import MEM0_TELEMETRY, capture_event
 from mem0.memory.utils import (
     extract_json,
-    get_fact_retrieval_messages,
     parse_messages,
     parse_vision_messages,
     process_telemetry_filters,

mem0/vector_stores/redis.py

@@ -217,12 +217,12 @@ class RedisDB(VectorStoreBase):
                     "hash": result["hash"],
                     "data": result["memory"],
                     "created_at": datetime.fromtimestamp(
-                        int(result["created_at"]), tz=pytz.timezone("US/Pacific")
+                        int(result["created_at"]), tz=timezone.utc
                     ).isoformat(timespec="microseconds"),
                     **(
                         {
                             "updated_at": datetime.fromtimestamp(
-                                int(result["updated_at"]), tz=pytz.timezone("US/Pacific")
+                                int(result["updated_at"]), tz=timezone.utc
                             ).isoformat(timespec="microseconds")
                         }
                         if "updated_at" in result

tests/utils/test_entity_extraction.py

@@ -17,7 +17,6 @@ class TestExtractEntities:
 
         entities = extract_entities("John Smith works at Google on machine learning projects")
         entity_texts = [e[1] for e in entities]
-        entity_types = [e[0] for e in entities]
         # Should extract proper nouns
         found_proper = any("John" in t or "Google" in t for t in entity_texts)
         assert found_proper, f"Expected proper nouns, got {entities}"