Remove Zod from named errors (#26982)

packages/opencode/src/util/named-schema-error.ts

@@ -1,51 +1,9 @@
 import { Schema } from "effect"
+import { NamedError } from "@opencode-ai/core/util/error"
 
 /**
  * Create a Schema-backed NamedError-shaped class.
- *
- * Drop-in replacement for `NamedError.create(tag, zodShape)` but backed by
- * `Schema.Struct` under the hood. The wire shape emitted by the derived
- * `.Schema` is still `{ name: tag, data: {...fields} }` so the generated
- * OpenAPI/SDK output is byte-identical to the original NamedError schema.
- *
- * Preserves the existing surface:
- *   - static `Schema` (Effect schema of the wire shape)
- *   - static `isInstance(x)`
- *   - instance `toObject()` returning `{ name, data }`
- *   - `new X({ ...data }, { cause })`
  */
 export function namedSchemaError<Tag extends string, Fields extends Schema.Struct.Fields>(tag: Tag, fields: Fields) {
-  const dataSchema = Schema.Struct(fields)
-  // Wire shape matches the original NamedError output so the SDK stays stable.
-  const effectSchema = Schema.Struct({
-    name: Schema.Literal(tag),
-    data: dataSchema,
-  }).annotate({ identifier: tag })
-
-  type Data = Schema.Schema.Type<typeof dataSchema>
-
-  class NamedSchemaError extends Error {
-    static readonly Schema = effectSchema
-    static readonly EffectSchema = effectSchema
-    static readonly tag = tag
-    public static isInstance(input: unknown): input is NamedSchemaError {
-      return typeof input === "object" && input !== null && "name" in input && (input as { name: unknown }).name === tag
-    }
-
-    public override readonly name: Tag = tag
-    public readonly data: Data
-
-    constructor(data: Data, options?: ErrorOptions) {
-      super(tag, options)
-      this.data = data
-    }
-
-    toObject(): { name: Tag; data: Data } {
-      return { name: tag, data: this.data }
-    }
-  }
-
-  Object.defineProperty(NamedSchemaError, "name", { value: tag })
-
-  return NamedSchemaError
+  return NamedError.create(tag, fields)
 }