feat(plugin): add namespaced hook API (#33416)

packages/plugin/src/v2/effect/plugin.ts

@@ -1,11 +1,28 @@
 import type { Effect, Scope } from "effect"
-import type { PluginHost } from "./host.js"
+import type { PluginContext } from "./context.js"
+import type { PluginOptions } from "../options.js"
+import type { Hooks } from "./registration.js"
 
-export interface Plugin<R = never> {
+export interface Plugin {
   readonly id: string
-  readonly effect: (host: PluginHost) => Effect.Effect<void, never, R | Scope.Scope>
+  readonly effect: (context: PluginContext) => Effect.Effect<void, never, Scope.Scope>
 }
 
-export function define<R>(plugin: Plugin<R>) {
+export function define(plugin: Plugin) {
   return plugin
 }
+
+export interface PluginRef {
+  readonly package: string
+  readonly options?: PluginOptions
+}
+
+export interface PluginDraft {
+  list(): readonly Plugin[]
+  add(plugin: Plugin): void
+  remove(id: string): void
+}
+
+export type PluginHooks = Hooks<{
+  transform: PluginDraft
+}>