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

packages/opencode/src/session/reminders.ts

@@ -2,7 +2,7 @@ import path from "path"
 import { SessionLegacy } from "@opencode-ai/core/session/legacy"
 import { Effect } from "effect"
 import { Agent } from "@/agent/agent"
-import { AppFileSystem } from "@opencode-ai/core/filesystem"
+import { FSUtil } from "@opencode-ai/core/fs-util"
 import { InstanceState } from "@/effect/instance-state"
 import { RuntimeFlags } from "@/effect/runtime-flags"
 import { PartID } from "./schema"
@@ -18,7 +18,7 @@ export const apply = Effect.fn("SessionReminders.apply")(function* (input: {
   session: Session.Info
 }) {
   const flags = yield* RuntimeFlags.Service
-  const fsys = yield* AppFileSystem.Service
+  const fsys = yield* FSUtil.Service
   const sessions = yield* Session.Service
   const userMessage = input.messages.findLast((msg) => msg.info.role === "user")
   if (!userMessage) return input.messages