refactor: unwrap FileWatcher namespace + self-reexport

packages/opencode/src/file/watcher.ts

@@ -19,7 +19,6 @@ import { Log } from "../util"
 
 declare const OPENCODE_LIBC: string | undefined
 
-export namespace FileWatcher {
 const log = Log.create({ service: "file.watcher" })
 const SUBSCRIBE_TIMEOUT_MS = 10_000
 
@@ -160,4 +159,5 @@ export namespace FileWatcher {
 )
 
 export const defaultLayer = layer.pipe(Layer.provide(Config.defaultLayer), Layer.provide(Git.defaultLayer))
-}
+
+export * as FileWatcher from "./watcher"