refactor(core): unify filesystem search service (#31566)

packages/opencode/test/tool/skill.test.ts

@@ -1,5 +1,6 @@
 import { PermissionV1 } from "@opencode-ai/core/v1/permission"
 import { CrossSpawnSpawner } from "@opencode-ai/core/cross-spawn-spawner"
+import { Ripgrep } from "@opencode-ai/core/ripgrep"
 import { Cause, Effect, Exit, Layer } from "effect"
 import { afterEach, describe, expect } from "bun:test"
 import path from "path"
@@ -28,7 +29,7 @@ afterEach(async () => {
 
 const node = CrossSpawnSpawner.defaultLayer
 
-const it = testEffect(Layer.mergeAll(ToolRegistry.defaultLayer, node))
+const it = testEffect(Layer.mergeAll(ToolRegistry.defaultLayer, node).pipe(Layer.provide(Ripgrep.defaultLayer)))
 
 describe("tool.skill", () => {
   it.instance("execute returns skill content block with files", () =>