import type { ChildProcess } from "node:child_process";import { Schema, type Effect } from "effect";import type { Config } from "../../config/env";import type { ProcessInfo } from "../models/types";import type {  EngineBackend,  RuntimeBackendInfo,  RuntimeUpgradeResult,} from "@local-studio/contracts/system";import type { InstallProgressUpdate } from "./runtimes/managed-venv"; export type { InstallProgressUpdate }; export interface InstallOptions {  config: Config;  version?: string | undefined;  pythonPath?: string | null | undefined;  preferBundled?: boolean | undefined;  createManagedVenv?: boolean | undefined;  onProgress?: ((update: InstallProgressUpdate) => void) | undefined;  onSpawn?: ((child: ChildProcess) => void) | undefined;}import { vllmSpec } from "./specs/vllm-spec";import { sglangSpec } from "./specs/sglang-spec";import { llamacppSpec } from "./specs/llamacpp-spec";import { mlxSpec } from "./specs/mlx-spec"; export interface BinaryProbeResult {  installed: boolean;  version: string | null;  binaryPath: string | null;  pythonPath?: string | null;  message?: string;} export interface ConfigHelpResult {  config: string | null;  error: string | null;} export class EngineOperationError extends Schema.TaggedErrorClass<EngineOperationError>()(  "EngineOperationError",  {    operation: Schema.String,    message: Schema.String,  },) {} export interface EngineSpec {  readonly id: EngineBackend;   readonly healthPath: string;  readonly cliBinary: string | null;  managedPackageSpec: (version?: string | null) => string;  install: (options: InstallOptions) => Effect.Effect<RuntimeUpgradeResult, EngineOperationError>;  probeBinary?: (binary: string) => Effect.Effect<BinaryProbeResult, EngineOperationError>;  resolvePythonPath?: (config: Config) => string | null;  getRuntimeInfo?: (    config: Config,    runningProcess?: Pick<ProcessInfo, "pid" | "backend"> | null,  ) => Effect.Effect<RuntimeBackendInfo, EngineOperationError>;  getConfigHelp?: (config: Config) => Effect.Effect<ConfigHelpResult, EngineOperationError>;} const SPECS: Record<EngineBackend, EngineSpec> = {  vllm: vllmSpec,  sglang: sglangSpec,  llamacpp: llamacppSpec,  mlx: mlxSpec,}; export const getEngineSpec = (backend: EngineBackend): EngineSpec => SPECS[backend]; export { vllmSpec, sglangSpec, llamacppSpec, mlxSpec };