Crosswake.Bridge.NotMountedError exception (crosswake v0.2.3)

Raised by Crosswake.Bridge.push/3 when called on a socket that never called Crosswake.Bridge.attach/1 (directly or via on_mount: Crosswake.Bridge). Crosswake never guesses a route id — a missing attach call is a distinct, named, install-time failure surface rather than a silent no-op.

Defined at the top level (not nested inside Crosswake.Bridge) so this module's own name is exactly Crosswake.Bridge.NotMountedError — nesting a defmodule Crosswake.Bridge.NotMountedError block inside defmodule Crosswake.Bridge would concatenate to Crosswake.Bridge.Crosswake.Bridge.NotMountedError instead.