refactor(core): move v1 schemas into core (#30473)

packages/opencode/src/config/markdown.ts

@@ -1,7 +1,6 @@
-import { NamedError } from "@opencode-ai/core/util/error"
 import matter from "gray-matter"
-import { Schema } from "effect"
 import { Filesystem } from "@/util/filesystem"
+import { FrontmatterError } from "@opencode-ai/core/v1/config/error"
 
 export const FILE_REGEX = /(?<![\w`])@(\.?[^\s`,.]*(?:\.[^\s`,.]+)*)/g
 export const SHELL_REGEX = /!`([^`]+)`/g
@@ -88,9 +87,4 @@ export async function parse(filePath: string) {
   }
 }
 
-export const FrontmatterError = NamedError.create("ConfigFrontmatterError", {
-  path: Schema.String,
-  message: Schema.String,
-})
-
 export * as ConfigMarkdown from "./markdown"