Module host_dispatch 

HostDispatch — handles reverse (plugin→host) RPC calls.

Routes host/* methods to the appropriate PluginHandle calls.

Traits

HostCallHandler

Maps a host/* method name to the corresponding PluginHandle call. The actual PluginHandle type is provided by src-tauri, so this is a trait-based dispatch to avoid coupling plugin-host to src-tauri.

PluginEventSink

宿主 → 插件的事件推送通道：把注册的回调经此通道以 JSON-RPC 通知（plugin/* 命名空间，无 id）推送给插件进程。

Functions

invalid_params

Helper for creating “invalid params” errors.

method_not_found

Helper for creating “method not found” errors.