fix build

packages/core/src/markdown.d.ts

@@ -0,0 +1,4 @@
+declare module "*.md" {
+  const content: string
+  export default content
+}

packages/core/src/plugin/skill.ts

@@ -1,18 +1,20 @@
+/// <reference path="../markdown.d.ts" />
+
 export * as SkillPlugin from "./skill"
 
 import { Effect } from "effect"
 import { PluginV2 } from "../plugin"
 import { AbsolutePath } from "../schema"
 import { SkillV2 } from "../skill"
+import customizeOpencodeContent from "./skill/customize-opencode.md" with { type: "text" }
+
+export const CustomizeOpencodeContent = customizeOpencodeContent
 
 export const Plugin = PluginV2.define({
   id: PluginV2.ID.make("skill"),
   effect: Effect.gen(function* () {
     const skill = yield* SkillV2.Service
     const transform = yield* skill.transform()
-    const content = yield* Effect.promise(() =>
-      Bun.file(new URL("./skill/customize-opencode.md", import.meta.url)).text(),
-    )
 
     yield* transform((editor) => {
       editor.source(
@@ -23,7 +25,7 @@ export const Plugin = PluginV2.define({
             description:
               "Use ONLY when the user is editing or creating opencode's own configuration: opencode.json, opencode.jsonc, files under .opencode/, or files under ~/.config/opencode/. Also use when creating or fixing opencode agents, subagents, skills, plugins, MCP servers, or permission rules. Do not use for the user's own application code, or for any project that is not configuring opencode itself.",
             location: AbsolutePath.make("/builtin/customize-opencode.md"),
-            content,
+            content: CustomizeOpencodeContent,
           }),
         }),
       )