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

packages/core/test/plugin/fixture.ts

@@ -1,6 +1,3 @@
-import { AgentV2 } from "@opencode-ai/core/agent"
-import { Catalog } from "@opencode-ai/core/catalog"
-import { CommandV2 } from "@opencode-ai/core/command"
 import { Credential } from "@opencode-ai/core/credential"
 import { EventV2 } from "@opencode-ai/core/event"
 import { FileSystem } from "@opencode-ai/core/filesystem"
@@ -8,23 +5,13 @@ import { FSUtil } from "@opencode-ai/core/fs-util"
 import { Global } from "@opencode-ai/core/global"
 import { Npm } from "@opencode-ai/core/npm"
 import { PluginV2 } from "@opencode-ai/core/plugin"
-import { Reference } from "@opencode-ai/core/reference"
 import { RepositoryCache } from "@opencode-ai/core/repository-cache"
 import { Ripgrep } from "@opencode-ai/core/ripgrep"
-import { SkillV2 } from "@opencode-ai/core/skill"
 import { SkillDiscovery } from "@opencode-ai/core/skill/discovery"
 import { Effect, Layer } from "effect"
 import { tempLocationLayer } from "../fixture/location"
 
-export const PluginTestLayer = Layer.mergeAll(
-  AgentV2.locationLayer,
-  CommandV2.locationLayer,
-  Catalog.locationLayer,
-  FileSystem.locationLayer,
-  PluginV2.locationLayer,
-  Reference.locationLayer,
-  SkillV2.locationLayer,
-).pipe(
+export const PluginTestLayer = Layer.mergeAll(FileSystem.locationLayer, PluginV2.locationLayer).pipe(
   Layer.provideMerge(
     Layer.mergeAll(
       Credential.defaultLayer,