fix: preserve bus instance context (#28051)

packages/opencode/src/session/compaction.ts

@@ -16,10 +16,8 @@ import { Effect, Layer, Context, Schema } from "effect"
 import * as DateTime from "effect/DateTime"
 import { InstanceState } from "@/effect/instance-state"
 import { isOverflow as overflow, usable } from "./overflow"
-import { makeRuntime } from "@/effect/run-service"
 import { serviceUse } from "@/effect/service-use"
 import { RuntimeFlags } from "@/effect/runtime-flags"
-import { EventV2 } from "@opencode-ai/core/event"
 import { EventV2Bridge } from "@/event-v2-bridge"
 import { SessionEvent } from "@opencode-ai/core/session-event"
 
@@ -638,14 +636,4 @@ export const defaultLayer = Layer.suspend(() =>
   ),
 )
 
-const { runPromise } = makeRuntime(Service, defaultLayer)
-
-export async function isOverflow(input: { tokens: MessageV2.Assistant["tokens"]; model: Provider.Model }) {
-  return runPromise((svc) => svc.isOverflow(input))
-}
-
-export async function prune(input: { sessionID: SessionID }) {
-  return runPromise((svc) => svc.prune(input))
-}
-
 export * as SessionCompaction from "./compaction"