File compaction.ts

packages/opencode/src/session/compaction.ts:None–None

import { LayerNode } from "@opencode-ai/core/effect/layer-node"
import { SessionV1 } from "@opencode-ai/core/v1/session"
import { ConfigV1 } from "@opencode-ai/core/v1/config/config"
import { Session } from "./session"