feat(plugin): support plugin-provided tools (#34619)

packages/sdk-next/src/opencode.ts

@@ -1,7 +1,6 @@
 import { OpenCode } from "@opencode-ai/client/effect"
 import { PermissionSaved } from "@opencode-ai/core/permission/saved"
 import { SdkPlugins } from "@opencode-ai/core/plugin/sdk"
-import { ApplicationTools } from "@opencode-ai/core/tool/application-tools"
 import { createEmbeddedRoutes } from "@opencode-ai/server/routes"
 import { Context, Effect, Layer, Scope } from "effect"
 import { FetchHttpClient, HttpRouter, HttpServer } from "effect/unstable/http"
@@ -9,18 +8,18 @@ import { FetchHttpClient, HttpRouter, HttpServer } from "effect/unstable/http"
 export const create = Effect.fn("OpenCode.create")(function* () {
   const scope = yield* Scope.Scope
   const memoMap = yield* Layer.makeMemoMap
+  const sdkPlugins = SdkPlugins.makeStore()
   const context = yield* Layer.buildWithMemoMap(
-    Layer.mergeAll(ApplicationTools.layer, PermissionSaved.defaultLayer, SdkPlugins.layer),
+    Layer.mergeAll(PermissionSaved.defaultLayer, SdkPlugins.layerWithStore(sdkPlugins)),
     memoMap,
     scope,
   )
-  const tools = Context.get(context, ApplicationTools.Service)
   const plugins = Context.get(context, SdkPlugins.Service)
   const permissions = Context.get(context, PermissionSaved.Service)
   const web = yield* Effect.acquireRelease(
     Effect.sync(() =>
       HttpRouter.toWebHandler(
-        createEmbeddedRoutes().pipe(
+        createEmbeddedRoutes(sdkPlugins).pipe(
           HttpRouter.provideRequest(Layer.succeed(PermissionSaved.Service, permissions)),
           Layer.provide(HttpServer.layerServices),
         ),
@@ -38,7 +37,8 @@ export const create = Effect.fn("OpenCode.create")(function* () {
   )
   return {
     ...client,
-    tools: { register: tools.register },
+    sessions: client.session,
+    events: client.event,
     // The embedded host contributes plugins through the ordinary discovery flow:
     // each plugin's `effect` runs inside every Location with the real
     // `PluginContext`, so `ctx.agent.transform` and every other hook behave exactly