refactor(core): consolidate filesystem services (#30447)

packages/opencode/src/auth/index.ts

@@ -2,7 +2,7 @@ import path from "path"
 import { Effect, Layer, Record, Result, Schema, Context } from "effect"
 import { NonNegativeInt } from "@opencode-ai/core/schema"
 import { Global } from "@opencode-ai/core/global"
-import { AppFileSystem } from "@opencode-ai/core/filesystem"
+import { FSUtil } from "@opencode-ai/core/fs-util"
 
 export const OAUTH_DUMMY_KEY = "opencode-oauth-dummy-key"
 
@@ -51,7 +51,7 @@ export class Service extends Context.Service<Service, Interface>()("@opencode/Au
 export const layer = Layer.effect(
   Service,
   Effect.gen(function* () {
-    const fsys = yield* AppFileSystem.Service
+    const fsys = yield* FSUtil.Service
     const decode = Schema.decodeUnknownOption(Info)
 
     const all = Effect.fn("Auth.all")(function* () {
@@ -91,6 +91,6 @@ export const layer = Layer.effect(
   }),
 )
 
-export const defaultLayer = layer.pipe(Layer.provide(AppFileSystem.defaultLayer))
+export const defaultLayer = layer.pipe(Layer.provide(FSUtil.defaultLayer))
 
 export * as Auth from "."