clan-lib: Remove injected "op_key" argument from all functions and do it over the threadcontext instead. Remove double threading in http server

pkgs/clan-cli/clan_lib/async_run/__init__.py

@@ -74,6 +74,7 @@ class AsyncContext:
     should_cancel: Callable[[], bool] = (
         lambda: False
     )  # Used to signal cancellation of task
+    op_key: str | None = None
 
 
 @dataclass
@@ -90,6 +91,22 @@ class AsyncOpts:
 ASYNC_CTX_THREAD_LOCAL = threading.local()
 
 
+def set_current_thread_opkey(op_key: str) -> None:
+    """
+    Set the current thread's operation key.
+    """
+    ctx = get_async_ctx()
+    ctx.op_key = op_key
+
+
+def get_current_thread_opkey() -> str | None:
+    """
+    Get the current thread's operation key.
+    """
+    ctx = get_async_ctx()
+    return ctx.op_key
+
+
 def is_async_cancelled() -> bool:
     """
     Check if the current task has been cancelled.