Remove effect-zod bridge (#26956)

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

@@ -1,13 +1,5 @@
 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 const ConfigModelID = Schema.String
 
 export type ConfigModelID = Schema.Schema.Type<typeof ConfigModelID>