added running pre task same time as category tasks

src/monitor_utils/sessions.py

@@ -146,6 +146,7 @@ async def send_request(
     params: dict | None = None,
     json_data: dict | None = None,
     data: dict | None = None,
+    headers: dict | None = None,
     reraise_json_error: bool = False,
     development_proxy: str | None = None,
 ) -> dict | str:
@@ -164,6 +165,8 @@ async def send_request(
         params: Query parameters.
         json_data: JSON body.
         data: Form body.
+        headers: Per-request headers merged over the session headers,
+            avoiding mutation of shared session state from concurrent tasks.
         reraise_json_error: Raise JSONDecodeError instead of returning raw
             text when the response is not valid JSON.
         development_proxy: Local proxy URL that overrides the pool and
@@ -193,6 +196,7 @@ async def send_request(
             params=params,
             json=json_data,
             data=data,
+            headers=headers,
             proxy=proxy,
             ssl=verify,
         ) as response:
@@ -205,6 +209,7 @@ async def send_request(
             params=params,
             json=json_data,
             data=data,
+            headers=headers,
             proxy=proxy,
             verify=verify,
         )