cloudaxe-opencode/packages/opencode/src/config/model-id.ts

import { Schema } from "effect"
import z from "zod"
import { ZodOverride } from "@opencode-ai/core/effect-zod"

// The original Zod schema carried an external $ref pointing at the models.dev
// JSON schema. That external reference is not a named SDK component — it is a
// literal pointer to an outside schema — so the walker cannot re-derive it
// from AST metadata. Preserve the exact original Zod via ZodOverride.
export const ConfigModelID = Schema.String.annotate({
  [ZodOverride]: z.string().meta({ $ref: "https://models.dev/model-schema.json#/$defs/Model" }),
})

export type ConfigModelID = Schema.Schema.Type<typeof ConfigModelID>