fix(tool): port bash-output and kill-shell params from zod to Effect Schema

Matches the Tool.define schema migration in upstream anomalyco#23244. Without this
the tool registry can't construct these tools and runtime errors out with
"undefined is not an object (evaluating 'X.context')" on every prompt.

Author: Thorsten.Tegetmeyer-Kleine

bun.lock

@@ -1,10 +1,11 @@
-import z from "zod"
-import { Effect } from "effect"
+import { Effect, Schema } from "effect"
 import * as Tool from "./tool"
 import { BackgroundShell, ShellNotFound } from "../shell/background"
 
-const parameters = z.object({
-  shell_id: z.string().describe("The id of a background shell previously started via bash with run_in_background"),
+const parameters = Schema.Struct({
+  shell_id: Schema.String.annotate({
+    description: "The id of a background shell previously started via bash with run_in_background",
+  }),
 })
 
 const DESCRIPTION = `Read new output from a background shell started by the bash tool with \`run_in_background: true\`.
@@ -20,7 +21,7 @@ export const BashOutputTool = Tool.define(
     return {
       description: DESCRIPTION,
       parameters,
-      execute: (params: z.infer<typeof parameters>, _ctx: Tool.Context) =>
+      execute: (params: Schema.Schema.Type<typeof parameters>, _ctx: Tool.Context) =>
         bg
           .output({ shellID: params.shell_id })
           .pipe(

packages/opencode/src/tool/bash-output.ts

@@ -1,10 +1,9 @@
-import z from "zod"
-import { Effect } from "effect"
+import { Effect, Schema } from "effect"
 import * as Tool from "./tool"
 import { BackgroundShell, ShellNotFound } from "../shell/background"
 
-const parameters = z.object({
-  shell_id: z.string().describe("The id of the background shell to terminate"),
+const parameters = Schema.Struct({
+  shell_id: Schema.String.annotate({ description: "The id of the background shell to terminate" }),
 })
 
 const DESCRIPTION = `Terminate a background shell previously started by the bash tool with \`run_in_background: true\`.
@@ -18,7 +17,7 @@ export const KillShellTool = Tool.define(
     return {
       description: DESCRIPTION,
       parameters,
-      execute: (params: z.infer<typeof parameters>, _ctx: Tool.Context) =>
+      execute: (params: Schema.Schema.Type<typeof parameters>, _ctx: Tool.Context) =>
         bg
           .kill({ shellID: params.shell_id })
           .pipe(