test: use Effect file services in migrated tests (#27154)

packages/opencode/test/snapshot/snapshot.test.ts

@@ -1,15 +1,15 @@
 import { afterEach, expect } from "bun:test"
 import { $ } from "bun"
 import { CrossSpawnSpawner } from "@opencode-ai/core/cross-spawn-spawner"
+import { AppFileSystem } from "@opencode-ai/core/filesystem"
 import fs from "fs/promises"
 import path from "path"
-import { Effect, Fiber } from "effect"
+import { Effect, Fiber, Layer } from "effect"
 import { Snapshot } from "../../src/snapshot"
-import { Filesystem } from "@/util/filesystem"
 import { disposeAllInstances, provideInstance, TestInstance, tmpdirScoped } from "../fixture/fixture"
 import { testEffect } from "../lib/effect"
 
-const it = testEffect(Snapshot.defaultLayer)
+const it = testEffect(Layer.mergeAll(Snapshot.defaultLayer, AppFileSystem.defaultLayer))
 
 // Git always outputs /-separated paths internally. Snapshot.patch() joins them
 // with path.join (which produces \ on Windows) then normalizes back to /.
@@ -27,17 +27,13 @@ const exec = (cwd: string, command: string[]) =>
     if (code !== 0) throw new Error(`${command.join(" ")} failed: ${await new Response(proc.stderr).text()}`)
   })
 
-const write = (file: string, content: string | Uint8Array) => Effect.promise(() => Filesystem.write(file, content))
-const readText = (file: string) => Effect.promise(() => fs.readFile(file, "utf-8"))
-const exists = (file: string) =>
-  Effect.promise(() =>
-    fs
-      .access(file)
-      .then(() => true)
-      .catch(() => false),
-  )
-const mkdirp = (dir: string) => Effect.promise(() => fs.mkdir(dir, { recursive: true }))
-const rm = (file: string) => Effect.promise(() => fs.rm(file, { recursive: true, force: true }))
+const write = (file: string, content: string | Uint8Array) =>
+  AppFileSystem.Service.use((fs) => fs.writeWithDirs(file, content))
+const readText = (file: string) => AppFileSystem.Service.use((fs) => fs.readFileString(file))
+const exists = (file: string) => AppFileSystem.Service.use((fs) => fs.existsSafe(file))
+const mkdirp = (dir: string) => AppFileSystem.Service.use((fs) => fs.ensureDir(dir))
+const rm = (file: string) =>
+  AppFileSystem.Service.use((fs) => fs.remove(file, { recursive: true, force: true }).pipe(Effect.ignore))
 
 const initialize = Effect.fn("SnapshotTest.initialize")(function* (dir: string) {
   const unique = Math.random().toString(36).slice(2)