diff --git a/packages/opencode/src/cli/cmd/uninstall.ts b/packages/opencode/src/cli/cmd/uninstall.ts
index 704d3572b..3d8e7e3f7 100644
--- a/packages/opencode/src/cli/cmd/uninstall.ts
+++ b/packages/opencode/src/cli/cmd/uninstall.ts
@@ -7,6 +7,7 @@ import { $ } from "bun"
 import fs from "fs/promises"
 import path from "path"
 import os from "os"
+import { Filesystem } from "../../util/filesystem"
 
 interface UninstallArgs {
   keepConfig: boolean
@@ -267,9 +268,7 @@ async function getShellConfigFile(): Promise<string | null> {
       .catch(() => false)
     if (!exists) continue
 
-    const content = await Bun.file(file)
-      .text()
-      .catch(() => "")
+    const content = await Filesystem.readText(file).catch(() => "")
     if (content.includes("# opencode") || content.includes(".opencode/bin")) {
       return file
     }
@@ -279,7 +278,7 @@ async function getShellConfigFile(): Promise<string | null> {
 }
 
 async function cleanShellConfig(file: string) {
-  const content = await Bun.file(file).text()
+  const content = await Filesystem.readText(file)
   const lines = content.split("\n")
 
   const filtered: string[] = []
@@ -315,7 +314,7 @@ async function cleanShellConfig(file: string) {
   }
 
   const output = filtered.join("\n") + "\n"
-  await Bun.write(file, output)
+  await Filesystem.write(file, output)
 }
 
 async function getDirectorySize(dir: string): Promise<number> {
diff --git a/packages/opencode/src/config/markdown.ts b/packages/opencode/src/config/markdown.ts
index 4cd17746c..5b4ccf047 100644
--- a/packages/opencode/src/config/markdown.ts
+++ b/packages/opencode/src/config/markdown.ts
@@ -1,6 +1,7 @@
 import { NamedError } from "@opencode-ai/util/error"
 import matter from "gray-matter"
 import { z } from "zod"
+import { Filesystem } from "../util/filesystem"
 
 export namespace ConfigMarkdown {
   export const FILE_REGEX = /(?<![\w`])@(\.?[^\s`,.]*(?:\.[^\s`,.]+)*)/g
@@ -68,7 +69,7 @@ export namespace ConfigMarkdown {
   }
 
   export async function parse(filePath: string) {
-    const template = await Bun.file(filePath).text()
+    const template = await Filesystem.readText(filePath)
 
     try {
       const md = matter(template)