diff --git a/packages/opencode/src/shell/shell.ts b/packages/opencode/src/shell/shell.ts
index 056a794dc8..60643c10b0 100644
--- a/packages/opencode/src/shell/shell.ts
+++ b/packages/opencode/src/shell/shell.ts
@@ -8,103 +8,103 @@ import { setTimeout as sleep } from "node:timers/promises"
 
 const SIGKILL_TIMEOUT_MS = 200
 
-export namespace Shell {
-  const BLACKLIST = new Set(["fish", "nu"])
-  const LOGIN = new Set(["bash", "dash", "fish", "ksh", "sh", "zsh"])
-  const POSIX = new Set(["bash", "dash", "ksh", "sh", "zsh"])
+const BLACKLIST = new Set(["fish", "nu"])
+const LOGIN = new Set(["bash", "dash", "fish", "ksh", "sh", "zsh"])
+const POSIX = new Set(["bash", "dash", "ksh", "sh", "zsh"])
 
-  export async function killTree(proc: ChildProcess, opts?: { exited?: () => boolean }): Promise<void> {
-    const pid = proc.pid
-    if (!pid || opts?.exited?.()) return
+export async function killTree(proc: ChildProcess, opts?: { exited?: () => boolean }): Promise<void> {
+  const pid = proc.pid
+  if (!pid || opts?.exited?.()) return
 
-    if (process.platform === "win32") {
-      await new Promise<void>((resolve) => {
-        const killer = spawn("taskkill", ["/pid", String(pid), "/f", "/t"], {
-          stdio: "ignore",
-          windowsHide: true,
-        })
-        killer.once("exit", () => resolve())
-        killer.once("error", () => resolve())
+  if (process.platform === "win32") {
+    await new Promise<void>((resolve) => {
+      const killer = spawn("taskkill", ["/pid", String(pid), "/f", "/t"], {
+        stdio: "ignore",
+        windowsHide: true,
       })
-      return
-    }
+      killer.once("exit", () => resolve())
+      killer.once("error", () => resolve())
+    })
+    return
+  }
 
-    try {
-      process.kill(-pid, "SIGTERM")
-      await sleep(SIGKILL_TIMEOUT_MS)
-      if (!opts?.exited?.()) {
-        process.kill(-pid, "SIGKILL")
-      }
-    } catch (_e) {
-      proc.kill("SIGTERM")
-      await sleep(SIGKILL_TIMEOUT_MS)
-      if (!opts?.exited?.()) {
-        proc.kill("SIGKILL")
-      }
+  try {
+    process.kill(-pid, "SIGTERM")
+    await sleep(SIGKILL_TIMEOUT_MS)
+    if (!opts?.exited?.()) {
+      process.kill(-pid, "SIGKILL")
+    }
+  } catch (_e) {
+    proc.kill("SIGTERM")
+    await sleep(SIGKILL_TIMEOUT_MS)
+    if (!opts?.exited?.()) {
+      proc.kill("SIGKILL")
     }
   }
-
-  function full(file: string) {
-    if (process.platform !== "win32") return file
-    const shell = Filesystem.windowsPath(file)
-    if (path.win32.dirname(shell) !== ".") {
-      if (shell.startsWith("/") && name(shell) === "bash") return gitbash() || shell
-      return shell
-    }
-    return which(shell) || shell
-  }
-
-  function pick() {
-    const pwsh = which("pwsh.exe")
-    if (pwsh) return pwsh
-    const powershell = which("powershell.exe")
-    if (powershell) return powershell
-  }
-
-  function select(file: string | undefined, opts?: { acceptable?: boolean }) {
-    if (file && (!opts?.acceptable || !BLACKLIST.has(name(file)))) return full(file)
-    if (process.platform === "win32") {
-      const shell = pick()
-      if (shell) return shell
-    }
-    return fallback()
-  }
-
-  export function gitbash() {
-    if (process.platform !== "win32") return
-    if (Flag.OPENCODE_GIT_BASH_PATH) return Flag.OPENCODE_GIT_BASH_PATH
-    const git = which("git")
-    if (!git) return
-    const file = path.join(git, "..", "..", "bin", "bash.exe")
-    if (Filesystem.stat(file)?.size) return file
-  }
-
-  function fallback() {
-    if (process.platform === "win32") {
-      const file = gitbash()
-      if (file) return file
-      return process.env.COMSPEC || "cmd.exe"
-    }
-    if (process.platform === "darwin") return "/bin/zsh"
-    const bash = which("bash")
-    if (bash) return bash
-    return "/bin/sh"
-  }
-
-  export function name(file: string) {
-    if (process.platform === "win32") return path.win32.parse(Filesystem.windowsPath(file)).name.toLowerCase()
-    return path.basename(file).toLowerCase()
-  }
-
-  export function login(file: string) {
-    return LOGIN.has(name(file))
-  }
-
-  export function posix(file: string) {
-    return POSIX.has(name(file))
-  }
-
-  export const preferred = lazy(() => select(process.env.SHELL))
-
-  export const acceptable = lazy(() => select(process.env.SHELL, { acceptable: true }))
 }
+
+function full(file: string) {
+  if (process.platform !== "win32") return file
+  const shell = Filesystem.windowsPath(file)
+  if (path.win32.dirname(shell) !== ".") {
+    if (shell.startsWith("/") && name(shell) === "bash") return gitbash() || shell
+    return shell
+  }
+  return which(shell) || shell
+}
+
+function pick() {
+  const pwsh = which("pwsh.exe")
+  if (pwsh) return pwsh
+  const powershell = which("powershell.exe")
+  if (powershell) return powershell
+}
+
+function select(file: string | undefined, opts?: { acceptable?: boolean }) {
+  if (file && (!opts?.acceptable || !BLACKLIST.has(name(file)))) return full(file)
+  if (process.platform === "win32") {
+    const shell = pick()
+    if (shell) return shell
+  }
+  return fallback()
+}
+
+export function gitbash() {
+  if (process.platform !== "win32") return
+  if (Flag.OPENCODE_GIT_BASH_PATH) return Flag.OPENCODE_GIT_BASH_PATH
+  const git = which("git")
+  if (!git) return
+  const file = path.join(git, "..", "..", "bin", "bash.exe")
+  if (Filesystem.stat(file)?.size) return file
+}
+
+function fallback() {
+  if (process.platform === "win32") {
+    const file = gitbash()
+    if (file) return file
+    return process.env.COMSPEC || "cmd.exe"
+  }
+  if (process.platform === "darwin") return "/bin/zsh"
+  const bash = which("bash")
+  if (bash) return bash
+  return "/bin/sh"
+}
+
+export function name(file: string) {
+  if (process.platform === "win32") return path.win32.parse(Filesystem.windowsPath(file)).name.toLowerCase()
+  return path.basename(file).toLowerCase()
+}
+
+export function login(file: string) {
+  return LOGIN.has(name(file))
+}
+
+export function posix(file: string) {
+  return POSIX.has(name(file))
+}
+
+export const preferred = lazy(() => select(process.env.SHELL))
+
+export const acceptable = lazy(() => select(process.env.SHELL, { acceptable: true }))
+
+export * as Shell from "./shell"