fix(types): T5 — narrow AsyncClient|None with inline if; rename loop variable t→task to avoid no-redef

decnet/webhook/client.py

@@ -148,7 +148,7 @@ async def deliver(
     url = sub["url"]
 
     owns_client = client is None
-    if owns_client:
+    if client is None:
         client = httpx.AsyncClient(timeout=timeout_s)
 
     last_status: Optional[int] = None

decnet/webhook/worker.py

@@ -85,7 +85,7 @@ async def webhook_worker(
 
     shutdown = asyncio.Event()
     owns_http = http_client is None
-    if owns_http:
+    if http_client is None:
         http_client = httpx.AsyncClient(timeout=10.0)
 
     try: