refactor(effect): use Git service in file and storage (#21803)

packages/opencode/test/file/watcher.test.ts

@@ -7,6 +7,7 @@ import { tmpdir } from "../fixture/fixture"
 import { Bus } from "../../src/bus"
 import { Config } from "../../src/config/config"
 import { FileWatcher } from "../../src/file/watcher"
+import { Git } from "../../src/git"
 import { Instance } from "../../src/project/instance"
 
 // Native @parcel/watcher bindings aren't reliably available in CI (missing on Linux, flaky on Windows)
@@ -32,6 +33,7 @@ function withWatcher<E>(directory: string, body: Effect.Effect<void, E>) {
     fn: async () => {
       const layer: Layer.Layer<FileWatcher.Service, never, never> = FileWatcher.layer.pipe(
         Layer.provide(Config.defaultLayer),
+        Layer.provide(Git.defaultLayer),
         Layer.provide(watcherConfigLayer),
       )
       const rt = ManagedRuntime.make(layer)