fix(typo): fix typos in docs and init

Author: yaozheng-fang

docs/content/2.configurations/2.envs.md

@@ -12,7 +12,7 @@ navigation:
 | 环境变量名称 | 释义 |
 | :- | :- |
 | `VOLCENGINE_ACCESS_KEY` | 火山引擎 Access Key |
-| `VOLCENGINE_SECRET_KEY` | 火山引擎 Access Key |
+| `VOLCENGINE_SECRET_KEY` | 火山引擎 Secret Key |
 
 对应 `yaml` 文件格式：
 

veadk/memory/__init__.py

@@ -25,7 +25,7 @@ def __getattr__(name):
         from veadk.memory.short_term_memory import ShortTermMemory
 
         return ShortTermMemory
-    if name == "LongTeremMemory":
+    if name == "LongTermMemory":
         from veadk.memory.long_term_memory import LongTermMemory
 
         return LongTermMemory

veadk/memory/short_term_memory.py

@@ -19,6 +19,7 @@
     BaseSessionService,
     DatabaseSessionService,
     InMemorySessionService,
+    Session,
 )
 from pydantic import BaseModel, Field, PrivateAttr
 
@@ -106,7 +107,7 @@ async def create_session(
         app_name: str,
         user_id: str,
         session_id: str,
-    ) -> None:
+    ) -> Session | None:
         if isinstance(self._session_service, DatabaseSessionService):
             list_sessions_response = await self._session_service.list_sessions(
                 app_name=app_name, user_id=user_id
@@ -122,7 +123,12 @@ async def create_session(
             )
             is None
         ):
-            # create a new session for this running
-            await self._session_service.create_session(
+            return await self._session_service.create_session(
                 app_name=app_name, user_id=user_id, session_id=session_id
             )
+        else:
+            logger.info(
+                f"Session {session_id} already exists with app_name={app_name} user_id={user_id}."
+            )
+
+            return None