feat(core): support background shell tool

packages/server/src/routes.ts

@@ -11,6 +11,7 @@ import { SessionExecution } from "@opencode-ai/core/session/execution"
 import { LocationServiceMap } from "@opencode-ai/core/location-service-map"
 import { SessionExecutionLocal } from "@opencode-ai/core/session/execution/local"
 import { SubagentTool } from "@opencode-ai/core/tool/subagent"
+import { ShellTool } from "@opencode-ai/core/tool/shell"
 import { ToolOutputStore } from "@opencode-ai/core/tool-output-store"
 import { HttpRouter, HttpServer } from "effect/unstable/http"
 import { HttpApiBuilder } from "effect/unstable/httpapi"
@@ -31,6 +32,7 @@ const applicationServices = LayerNode.group([
   ToolOutputStore.cleanupNode,
   SessionV2.node,
   SubagentTool.node,
+  ShellTool.node,
   PermissionSaved.node,
   PtyTicket.node,
   Credential.node,