#!/usr/bin/env node
// Development runner that rebuilds OpenClaw, runs runtime postbuild steps, and
// restarts the CLI when watched source or metadata changes.
import {
  spawn,
  spawnSync,
  type SpawnOptions,
  type SpawnSyncOptionsWithStringEncoding,
} from "node:child_process";
import fs from "node:fs";
import path from "node:path";
import process from "node:process";
import { pathToFileURL } from "node:url";
import {
  collectBundledPluginBuildEntries,
  NON_PACKAGED_BUNDLED_PLUGIN_DIRS,
} from "./lib/bundled-plugin-build-entries.mjs";
import {
  BUNDLED_PLUGIN_PATH_PREFIX,
  BUNDLED_PLUGIN_ROOT_DIR,
} from "./lib/bundled-plugin-paths.mjs";
import {
  BUILD_STAMP_FILE,
  RUNTIME_POSTBUILD_STAMP_FILE,
  resolveGitHead,
  writeBuildStamp as writeDistBuildStamp,
  writeRuntimePostBuildStamp as writeDistRuntimePostBuildStamp,
} from "./lib/local-build-metadata.mts";
import { sleep } from "./lib/sleep.mjs";
import {
  discoverStaticExtensionAssets,
  listStaticExtensionAssetSources,
} from "./lib/static-extension-assets.mts";
import {
  extensionRestartMetadataFiles,
  isBuildRelevantRunNodePath,
  normalizeRunNodePath as normalizePath,
  runNodeConfigFiles,
  runNodeSourceRoots,
  runNodeWatchedPaths,
} from "./run-node-watch-paths.mts";
import { listCoreRuntimePostBuildOutputs, runRuntimePostBuild } from "./runtime-postbuild.mts";

type RunNodeInjectedChild = {
  kill?: (signal?: NodeJS.Signals) => boolean | void;
  on(event: string, callback: (...args: never[]) => void): unknown;
  pid?: number;
  stderr?: Pick<NodeJS.ReadableStream, "on">;
  stdout?: Pick<NodeJS.ReadableStream, "on">;
};

type RunNodeChild = RunNodeInjectedChild;
type RunNodeSpawn = (command: string, args: string[], options: SpawnOptions) => unknown;
type RunNodeSpawnSync = (
  command: string,
  args: string[],
  options: SpawnSyncOptionsWithStringEncoding,
) => { error?: NodeJS.ErrnoException; status: number | null; stdout?: string | null };
type RunNodeWritable = {
  isTTY?: boolean;
  write(value: string | Uint8Array): unknown;
};
type RunNodeRuntimePostBuild = (
  params?: Parameters<typeof runRuntimePostBuild>[0],
) => void | Promise<void>;
type RunNodeMainParams = {
  spawn?: RunNodeSpawn;
  spawnSync?: RunNodeSpawnSync;
  fs?: typeof fs;
  stderr?: RunNodeWritable;
  stdout?: RunNodeWritable;
  process?: NodeJS.Process;
  signalProcess?: (pid: number, signal?: NodeJS.Signals | number) => boolean | void;
  execPath?: string;
  cwd?: string;
  args?: string[];
  env?: NodeJS.ProcessEnv;
  runRuntimePostBuild?: RunNodeRuntimePostBuild;
  platform?: NodeJS.Platform;
};
type RunNodeProgress = {
  clearLine(): void;
  render(): void;
  stop(): void;
};
type RunNodeDeps = ReturnType<typeof createRunNodeDeps>;
type RunNodeRequirementDeps = {
  buildStampPath: string;
  configFiles: string[];
  cwd: string;
  distEntry: string;
  distRoot: string;
  env: NodeJS.ProcessEnv;
  fs: typeof fs;
  privateQaRequiredDistEntries?: string[];
  sourceRoots: Array<{ name: string; path: string }>;
  spawnSync: RunNodeSpawnSync;
};
type RunNodeRuntimeRequirementDeps = RunNodeRequirementDeps & {
  runtimePostBuildStampPath: string;
};
type RunNodeOutputTee = {
  write(chunk: string | Uint8Array): void;
  close(): Promise<void>;
};
type RunNodeMutableState = {
  outputTee: RunNodeOutputTee | null;
  runNodeProgress: RunNodeProgress | undefined;
};
type RunNodeLogDeps = Pick<RunNodeDeps, "env" | "stderr"> &
  Partial<Pick<RunNodeDeps, "outputTee" | "runNodeProgress">>;
type RunNodeLockDeps = Pick<RunNodeDeps, "cwd" | "env" | "fs" | "process" | "stderr"> & {
  args: readonly string[];
};
type BundledPluginBuildEntry = ReturnType<typeof collectBundledPluginBuildEntries>[number] & {
  hasManifest: boolean;
};
type BuildRequirement = { shouldBuild: boolean; reason: keyof typeof BUILD_REASON_LABELS };
type RuntimePostBuildRequirement = {
  shouldSync: boolean;
  reason: keyof typeof RUNTIME_POSTBUILD_REASON_LABELS;
};
type SpawnedProcessResult = {
  exitCode: number | null;
  exitSignal: NodeJS.Signals | null;
  forwardedSignal: NodeJS.Signals | null;
};

function asRunNodeChild(value: unknown): RunNodeChild {
  if (!value || typeof value !== "object" || !("on" in value) || typeof value.on !== "function") {
    throw new Error("spawn implementation returned an invalid child process");
  }
  return value as RunNodeChild;
}

export { runNodeWatchedPaths };

const buildScript = "scripts/tsdown-build.mts";
const bundledPluginAssetsScript = "scripts/bundled-plugin-assets.mts";
const compilerArgs = ["--import", "tsx", buildScript, "--no-clean"];
const bundledPluginAssetBuildArgs = [
  "--import",
  "tsx",
  bundledPluginAssetsScript,
  "--phase",
  "build",
];
const RUN_NODE_SIGNAL_FORCE_KILL_AFTER_MS = 5_000;

const runtimePostBuildWatchedPaths = [
  "scripts/copy-bundled-plugin-metadata.mjs",
  "scripts/lib",
  "scripts/lib/local-build-metadata.mts",
  "scripts/lib/local-build-metadata-paths.mts",
  "scripts/npm-runner.mts",
  "scripts/runtime-postbuild-stamp.mts",
  "scripts/runtime-postbuild-shared.mjs",
  "scripts/runtime-postbuild.mjs",
  "scripts/stage-bundled-plugin-runtime.mjs",
  "scripts/windows-cmd-helpers.mjs",
  "scripts/write-official-channel-catalog.mjs",
  BUNDLED_PLUGIN_ROOT_DIR,
];
const runtimePostBuildScriptPaths = new Set(
  runtimePostBuildWatchedPaths.filter((entry) => entry.startsWith("scripts/")),
);
const runtimePostBuildStaticAssetPaths = new Set(listStaticExtensionAssetSources());

const statMtime = (filePath: string, fsImpl: typeof fs = fs) => {
  try {
    return fsImpl.statSync(filePath).mtimeMs;
  } catch {
    return null;
  }
};

const resolvePrivateQaRequiredDistEntries = (distRoot: string) => [
  path.join(distRoot, "plugin-sdk", "qa-lab.js"),
  path.join(distRoot, "plugin-sdk", "qa-runtime.js"),
];
const shouldRequireBundledPluginRuntimeOutput = (
  pluginId: string,
  env: NodeJS.ProcessEnv = process.env,
) => env.OPENCLAW_BUILD_PRIVATE_QA === "1" || !NON_PACKAGED_BUNDLED_PLUGIN_DIRS.has(pluginId);

const isExcludedSource = (filePath: string, sourceRoot: string, sourceRootName: string) => {
  const relativePath = normalizePath(path.relative(sourceRoot, filePath));
  if (relativePath.startsWith("..")) {
    return false;
  }
  return !isBuildRelevantRunNodePath(path.posix.join(sourceRootName, relativePath));
};

const findLatestMtime = (
  dirPath: string,
  shouldSkip: ((filePath: string) => boolean) | undefined,
  deps: RunNodeRequirementDeps,
) => {
  let latest: number | null = null;
  const queue = [dirPath];
  while (queue.length > 0) {
    const current = queue.pop();
    if (!current) {
      continue;
    }
    let entries;
    try {
      entries = deps.fs.readdirSync(current, { withFileTypes: true });
    } catch {
      continue;
    }
    for (const entry of entries) {
      const fullPath = path.join(current, entry.name);
      if (entry.isDirectory()) {
        queue.push(fullPath);
        continue;
      }
      if (!entry.isFile()) {
        continue;
      }
      if (shouldSkip?.(fullPath)) {
        continue;
      }
      const mtime = statMtime(fullPath, deps.fs);
      if (mtime == null) {
        continue;
      }
      if (latest == null || mtime > latest) {
        latest = mtime;
      }
    }
  }
  return latest;
};

const readGitStatus = (deps: RunNodeRequirementDeps, paths: string[] = runNodeWatchedPaths) => {
  try {
    const result = deps.spawnSync(
      "git",
      ["status", "--porcelain", "--untracked-files=normal", "--", ...paths],
      {
        cwd: deps.cwd,
        encoding: "utf8",
        stdio: ["ignore", "pipe", "ignore"],
      },
    );
    if (result.status !== 0) {
      return null;
    }
    return result.stdout ?? "";
  } catch {
    return null;
  }
};

const parseGitStatusPaths = (output: string) =>
  output
    .split("\n")
    .flatMap((line) => line.slice(3).split(" -> "))
    .map((entry) => normalizePath(entry.trim()))
    .filter(Boolean);

const hasDirtySourceTree = (deps: RunNodeRequirementDeps) => {
  const output = readGitStatus(deps);
  if (output === null) {
    return null;
  }
  return parseGitStatusPaths(output).some((repoPath) => {
    const normalizedPath = normalizePath(repoPath).replace(/^\.\/+/, "");
    return (
      isBuildRelevantRunNodePath(normalizedPath) ||
      isDirtyBundledPluginPackageEntryChangeWithoutBuiltOutputs(normalizedPath, deps)
    );
  });
};

const isRuntimePostBuildRelevantPath = (repoPath: string) => {
  const normalizedPath = normalizePath(repoPath).replace(/^\.\/+/, "");
  if (runtimePostBuildStaticAssetPaths.has(normalizedPath)) {
    return true;
  }
  if (
    normalizedPath.startsWith("scripts/") &&
    (runtimePostBuildScriptPaths.has(normalizedPath) || normalizedPath.startsWith("scripts/lib/"))
  ) {
    return true;
  }
  if (!normalizedPath.startsWith(BUNDLED_PLUGIN_PATH_PREFIX)) {
    return false;
  }
  const pluginRelativePath = normalizedPath.slice(BUNDLED_PLUGIN_PATH_PREFIX.length);
  const pluginLocalPath = pluginRelativePath.split("/").slice(1).join("/");
  if (pluginLocalPath === "skills" || pluginLocalPath.startsWith("skills/")) {
    return true;
  }
  return extensionRestartMetadataFiles.has(path.posix.basename(pluginRelativePath));
};

const hasDirtyRuntimePostBuildInputs = (deps: RunNodeRequirementDeps) => {
  const output = readGitStatus(deps, runtimePostBuildWatchedPaths);
  if (output === null) {
    return null;
  }
  return parseGitStatusPaths(output).some((repoPath) => isRuntimePostBuildRelevantPath(repoPath));
};

const readJsonStamp = (filePath: string, deps: RunNodeRequirementDeps) => {
  const mtime = statMtime(filePath, deps.fs);
  if (mtime == null) {
    return { mtime: null, head: null };
  }
  try {
    const raw = deps.fs.readFileSync(filePath, "utf8").trim();
    if (!raw.startsWith("{")) {
      return { mtime, head: null };
    }
    const parsed = JSON.parse(raw);
    const head = typeof parsed?.head === "string" && parsed.head.trim() ? parsed.head.trim() : null;
    return { mtime, head };
  } catch {
    return { mtime, head: null };
  }
};

const readBuildStamp = (deps: RunNodeRequirementDeps) => readJsonStamp(deps.buildStampPath, deps);

const readRuntimePostBuildStamp = (deps: RunNodeRuntimeRequirementDeps) => {
  return readJsonStamp(deps.runtimePostBuildStampPath, deps);
};

const hasSourceMtimeChanged = (stampMtime: number, deps: RunNodeRequirementDeps) => {
  let latestSourceMtime: number | null = null;
  for (const sourceRoot of deps.sourceRoots) {
    const sourceMtime = findLatestMtime(
      sourceRoot.path,
      (candidate) => isExcludedSource(candidate, sourceRoot.path, sourceRoot.name),
      deps,
    );
    if (sourceMtime != null && (latestSourceMtime == null || sourceMtime > latestSourceMtime)) {
      latestSourceMtime = sourceMtime;
    }
  }
  return latestSourceMtime != null && latestSourceMtime > stampMtime;
};

const findLatestRuntimePostBuildInputMtime = (
  absolutePath: string,
  relativePath: string,
  deps: RunNodeRequirementDeps,
) => {
  const normalizedRelativePath = normalizePath(relativePath);
  const statsMtime = statMtime(absolutePath, deps.fs);
  if (statsMtime == null) {
    return null;
  }
  let stat;
  try {
    stat = deps.fs.statSync(absolutePath);
  } catch {
    return null;
  }
  if (!stat.isDirectory()) {
    return isRuntimePostBuildRelevantPath(normalizedRelativePath) ? statsMtime : null;
  }
  return findLatestMtime(
    absolutePath,
    (candidate) => {
      const candidateRelativePath = path.relative(deps.cwd, candidate);
      return !isRuntimePostBuildRelevantPath(candidateRelativePath);
    },
    deps,
  );
};

const hasRuntimePostBuildInputMtimeChanged = (stampMtime: number, deps: RunNodeRequirementDeps) => {
  let latestInputMtime: number | null = null;
  for (const relativePath of runtimePostBuildWatchedPaths) {
    const absolutePath = path.join(deps.cwd, relativePath);
    const inputMtime = findLatestRuntimePostBuildInputMtime(absolutePath, relativePath, deps);
    if (inputMtime != null && (latestInputMtime == null || inputMtime > latestInputMtime)) {
      latestInputMtime = inputMtime;
    }
  }
  return latestInputMtime != null && latestInputMtime > stampMtime;
};

const collectRunNodeBundledPluginBuildEntries = (deps: RunNodeRequirementDeps) => {
  if (!deps.fs.existsSync(path.join(deps.cwd, BUNDLED_PLUGIN_ROOT_DIR))) {
    return [];
  }
  return collectBundledPluginBuildEntries({ cwd: deps.cwd, env: deps.env });
};

const resolveBuiltBundledPluginRuntimeEntryPath = (
  distRoot: string,
  pluginId: string,
  sourceEntry: string,
) =>
  path.join(
    distRoot,
    "extensions",
    pluginId,
    sourceEntry.replace(/^\.\//, "").replace(/\.[^.]+$/u, ".js"),
  );

const listBundledPluginRuntimeEntryPaths = (
  pluginEntry: BundledPluginBuildEntry,
  deps: RunNodeRequirementDeps,
) => {
  const distRoot = deps.distRoot;
  return pluginEntry.sourceEntries
    .map((sourceEntry) =>
      resolveBuiltBundledPluginRuntimeEntryPath(distRoot, pluginEntry.id, sourceEntry),
    )
    .toSorted((left, right) => left.localeCompare(right));
};

const isDirtyBundledPluginPackageEntryChangeWithoutBuiltOutputs = (
  normalizedPath: string,
  deps: RunNodeRequirementDeps,
) => {
  if (!normalizedPath.startsWith("extensions/") || !normalizedPath.endsWith("/package.json")) {
    return false;
  }
  const [, pluginId] = normalizedPath.split("/");
  if (!pluginId || !shouldRequireBundledPluginRuntimeOutput(pluginId, deps.env)) {
    return false;
  }
  const pluginEntry = collectRunNodeBundledPluginBuildEntries(deps).find(
    (entry) => entry.id === pluginId,
  );
  if (!pluginEntry) {
    return false;
  }
  return listBundledPluginRuntimeEntryPaths(pluginEntry, deps).some(
    (filePath) => !deps.fs.existsSync(filePath),
  );
};

const hasMissingBuiltBundledPluginRuntimeEntryOutput = (deps: RunNodeRequirementDeps) => {
  return collectRunNodeBundledPluginBuildEntries(deps)
    .filter(({ id }) => shouldRequireBundledPluginRuntimeOutput(id, deps.env))
    .some((pluginEntry) => {
      const entryPaths = listBundledPluginRuntimeEntryPaths(pluginEntry, deps);
      return entryPaths.some((filePath) => !deps.fs.existsSync(filePath));
    });
};

const listBuiltBundledPluginEntries = (deps: RunNodeRequirementDeps) => {
  return collectRunNodeBundledPluginBuildEntries(deps)
    .filter(({ id }) => shouldRequireBundledPluginRuntimeOutput(id, deps.env))
    .filter((pluginEntry) =>
      listBundledPluginRuntimeEntryPaths(pluginEntry, deps).some((filePath) =>
        deps.fs.existsSync(filePath),
      ),
    )
    .toSorted((left, right) => left.id.localeCompare(right.id));
};

const listBuiltBundledPluginRuntimeOverlayDirs = (deps: RunNodeRequirementDeps) => {
  const distExtensionsRoot = path.join(deps.distRoot, "extensions");
  let entries;
  try {
    entries = deps.fs.readdirSync(distExtensionsRoot, { withFileTypes: true });
  } catch {
    return [];
  }
  return entries
    .filter((entry) => entry.isDirectory() && entry.name !== "node_modules")
    .map((entry) => entry.name)
    .toSorted((left, right) => left.localeCompare(right));
};

const listRequiredBundledPluginMetadataOutputs = (
  pluginEntries: BundledPluginBuildEntry[],
  deps: RunNodeRequirementDeps,
) =>
  pluginEntries.flatMap(({ id, hasManifest, hasPackageJson }) => {
    const builtPluginDir = path.join(deps.distRoot, "extensions", id);
    const requiredPaths = [];
    if (hasPackageJson) {
      requiredPaths.push(path.join(builtPluginDir, "package.json"));
    }
    if (hasManifest) {
      requiredPaths.push(path.join(builtPluginDir, "openclaw.plugin.json"));
    }
    return requiredPaths;
  });

const listRuntimeOverlaySourcePaths = (sourceDir: string, deps: RunNodeRequirementDeps) => {
  const paths: string[] = [];
  const queue = [sourceDir];
  while (queue.length > 0) {
    const current = queue.pop();
    if (!current) {
      continue;
    }
    let entries;
    try {
      entries = deps.fs.readdirSync(current, { withFileTypes: true });
    } catch {
      continue;
    }
    for (const entry of entries) {
      if (entry.name === "node_modules") {
        continue;
      }
      const entryPath = path.join(current, entry.name);
      if (entry.isDirectory()) {
        queue.push(entryPath);
        continue;
      }
      if (entry.isFile() || entry.isSymbolicLink()) {
        paths.push(entryPath);
      }
    }
  }
  return paths.toSorted((left, right) => left.localeCompare(right));
};

const listRequiredBundledPluginRuntimeOverlayOutputs = (deps: RunNodeRequirementDeps) => {
  const distRoot = deps.distRoot;
  const runtimeRoot = path.join(deps.cwd, "dist-runtime");
  const runtimePaths: string[] = [];
  for (const pluginId of listBuiltBundledPluginRuntimeOverlayDirs(deps)) {
    const distPluginDir = path.join(distRoot, "extensions", pluginId);
    const runtimePluginDir = path.join(runtimeRoot, "extensions", pluginId);
    for (const sourcePath of listRuntimeOverlaySourcePaths(distPluginDir, deps)) {
      runtimePaths.push(path.join(runtimePluginDir, path.relative(distPluginDir, sourcePath)));
    }
  }
  return [...new Set(runtimePaths)].toSorted((left, right) => left.localeCompare(right));
};

const isSafePluginSdkSubpathSegment = (subpath: string) =>
  /^[A-Za-z0-9][A-Za-z0-9_-]*$/.test(subpath);

const readPackageJsonPluginSdkAliasFileNames = (deps: RunNodeRequirementDeps) => {
  let packageJson;
  try {
    packageJson = JSON.parse(deps.fs.readFileSync(path.join(deps.cwd, "package.json"), "utf8"));
  } catch {
    return null;
  }
  const packageExports = packageJson?.exports;
  if (!packageExports || typeof packageExports !== "object" || Array.isArray(packageExports)) {
    return null;
  }

  const fileNames = new Set<string>();
  for (const exportKey of Object.keys(packageExports)) {
    if (!exportKey.startsWith("./plugin-sdk/")) {
      continue;
    }
    const subpath = exportKey.slice("./plugin-sdk/".length);
    if (isSafePluginSdkSubpathSegment(subpath)) {
      fileNames.add(`${subpath}.js`);
    }
  }
  return fileNames.size > 0 ? fileNames : null;
};

const listRequiredOpenClawExtensionAliasOutputs = (deps: RunNodeRequirementDeps) => {
  const distRoot = deps.distRoot;
  const distExtensionsRoot = path.join(distRoot, "extensions");
  if (!deps.fs.existsSync(distExtensionsRoot)) {
    return [];
  }
  const pluginSdkDir = path.join(distRoot, "plugin-sdk");
  let dirents;
  try {
    dirents = deps.fs.readdirSync(pluginSdkDir, { withFileTypes: true });
  } catch {
    return [];
  }

  const exportedPluginSdkFileNames = readPackageJsonPluginSdkAliasFileNames(deps);
  const aliasDir = path.join(distRoot, "extensions", "node_modules", "openclaw");
  return [
    path.join(aliasDir, "package.json"),
    ...dirents
      .filter((dirent) => dirent.isFile() && path.extname(dirent.name) === ".js")
      .filter(
        (dirent) => !exportedPluginSdkFileNames || exportedPluginSdkFileNames.has(dirent.name),
      )
      .map((dirent) => path.join(aliasDir, "plugin-sdk", dirent.name)),
  ].toSorted((left, right) => left.localeCompare(right));
};

const listRequiredStaticExtensionAssetOutputs = (deps: RunNodeRequirementDeps) => {
  if (deps.env.OPENCLAW_RUNTIME_POSTBUILD_STATIC_ASSETS === "0") {
    return [];
  }
  const distRoot = deps.distRoot;
  const runtimeRoot = path.join(deps.cwd, "dist-runtime");
  const runtimeExtensionsRoot = path.join(runtimeRoot, "extensions");
  const hasRuntimeOverlay = deps.fs.existsSync(runtimeExtensionsRoot);
  return discoverStaticExtensionAssets({ rootDir: deps.cwd, fs: deps.fs })
    .filter((asset) => deps.fs.existsSync(path.join(deps.cwd, asset.src)))
    .flatMap((asset) => {
      const relativeOutput = normalizePath(asset.dest).replace(/^dist\//u, "");
      const outputs = [path.join(distRoot, relativeOutput)];
      if (hasRuntimeOverlay) {
        outputs.push(path.join(runtimeRoot, relativeOutput));
      }
      return outputs;
    })
    .toSorted((left, right) => left.localeCompare(right));
};

const listRequiredCoreRuntimePostBuildOutputs = (deps: RunNodeRequirementDeps) =>
  listCoreRuntimePostBuildOutputs({ rootDir: deps.cwd, fs: deps.fs }).map((relativePath) =>
    path.join(deps.cwd, normalizePath(relativePath)),
  );

/** Lists runtime postbuild outputs that must exist before the dev CLI starts. */
const listRequiredRuntimePostBuildOutputs = (deps: RunNodeRequirementDeps) => {
  const builtPluginEntries = listBuiltBundledPluginEntries(deps);
  return [
    ...listRequiredCoreRuntimePostBuildOutputs(deps),
    ...listRequiredOpenClawExtensionAliasOutputs(deps),
    ...listRequiredStaticExtensionAssetOutputs(deps),
    ...listRequiredBundledPluginMetadataOutputs(builtPluginEntries, deps),
    ...listRequiredBundledPluginRuntimeOverlayOutputs(deps),
  ];
};

const hasMissingRequiredRuntimePostBuildOutput = (deps: RunNodeRequirementDeps) =>
  listRequiredRuntimePostBuildOutputs(deps).some(
    (filePath) => statMtime(filePath, deps.fs) == null,
  );

/** Decides whether source changes require a new dev build. */
export const resolveBuildRequirement = (deps: RunNodeRequirementDeps): BuildRequirement => {
  if (deps.env.OPENCLAW_FORCE_BUILD === "1") {
    return { shouldBuild: true, reason: "force_build" };
  }
  if (
    deps.env.OPENCLAW_BUILD_PRIVATE_QA === "1" &&
    (deps.privateQaRequiredDistEntries ?? resolvePrivateQaRequiredDistEntries(deps.distRoot)).some(
      (entry) => statMtime(entry, deps.fs) == null,
    )
  ) {
    return { shouldBuild: true, reason: "missing_private_qa_dist" };
  }
  const stamp = readBuildStamp(deps);
  if (stamp.mtime == null) {
    return { shouldBuild: true, reason: "missing_build_stamp" };
  }
  if (statMtime(deps.distEntry, deps.fs) == null) {
    return { shouldBuild: true, reason: "missing_dist_entry" };
  }

  for (const filePath of deps.configFiles) {
    const mtime = statMtime(filePath, deps.fs);
    if (mtime != null && mtime > stamp.mtime) {
      return { shouldBuild: true, reason: "config_newer" };
    }
  }

  const currentHead = resolveGitHead(deps);
  if (currentHead && !stamp.head) {
    return { shouldBuild: true, reason: "build_stamp_missing_head" };
  }
  if (currentHead && stamp.head && currentHead !== stamp.head) {
    return { shouldBuild: true, reason: "git_head_changed" };
  }
  if (currentHead) {
    const dirty = hasDirtySourceTree(deps);
    if (dirty === true) {
      return { shouldBuild: true, reason: "dirty_watched_tree" };
    }
    if (dirty === false) {
      if (hasMissingBuiltBundledPluginRuntimeEntryOutput(deps)) {
        return { shouldBuild: true, reason: "missing_bundled_plugin_dist_entry" };
      }
      return { shouldBuild: false, reason: "clean" };
    }
  }

  if (hasMissingBuiltBundledPluginRuntimeEntryOutput(deps)) {
    return { shouldBuild: true, reason: "missing_bundled_plugin_dist_entry" };
  }

  if (hasSourceMtimeChanged(stamp.mtime, deps)) {
    return { shouldBuild: true, reason: "source_mtime_newer" };
  }
  return { shouldBuild: false, reason: "clean" };
};

/** Decides whether runtime postbuild artifacts need to be regenerated. */
export const resolveRuntimePostBuildRequirement = (
  deps: RunNodeRuntimeRequirementDeps,
): RuntimePostBuildRequirement => {
  if (deps.env.OPENCLAW_FORCE_RUNTIME_POSTBUILD === "1") {
    return { shouldSync: true, reason: "force_runtime_postbuild" };
  }

  const stamp = readRuntimePostBuildStamp(deps);
  if (stamp.mtime == null) {
    return { shouldSync: true, reason: "missing_runtime_postbuild_stamp" };
  }

  const buildStamp = readBuildStamp(deps);
  if (buildStamp.mtime == null) {
    return { shouldSync: true, reason: "missing_build_stamp" };
  }
  if (buildStamp.mtime > stamp.mtime) {
    return { shouldSync: true, reason: "build_stamp_newer" };
  }

  const currentHead = resolveGitHead(deps);
  if (currentHead && !stamp.head) {
    return { shouldSync: true, reason: "runtime_postbuild_stamp_missing_head" };
  }
  if (currentHead && stamp.head && currentHead !== stamp.head) {
    return { shouldSync: true, reason: "git_head_changed" };
  }
  if (currentHead) {
    const dirty = hasDirtyRuntimePostBuildInputs(deps);
    if (dirty === true) {
      return { shouldSync: true, reason: "dirty_runtime_postbuild_inputs" };
    }
    if (dirty === false) {
      if (hasMissingRequiredRuntimePostBuildOutput(deps)) {
        return { shouldSync: true, reason: "missing_runtime_postbuild_output" };
      }
      return { shouldSync: false, reason: "clean" };
    }
  }

  if (hasRuntimePostBuildInputMtimeChanged(stamp.mtime, deps)) {
    return { shouldSync: true, reason: "runtime_postbuild_input_mtime_newer" };
  }

  if (hasMissingRequiredRuntimePostBuildOutput(deps)) {
    return { shouldSync: true, reason: "missing_runtime_postbuild_output" };
  }

  return { shouldSync: false, reason: "clean" };
};

const BUILD_REASON_LABELS = {
  force_build: "forced by OPENCLAW_FORCE_BUILD",
  missing_build_stamp: "build stamp missing",
  missing_dist_entry: "dist entry missing",
  config_newer: "config newer than build stamp",
  build_stamp_missing_head: "build stamp missing git head",
  git_head_changed: "git head changed",
  dirty_watched_tree: "dirty watched source tree",
  missing_bundled_plugin_dist_entry: "bundled plugin dist entry missing",
  source_mtime_newer: "source mtime newer than build stamp",
  missing_private_qa_dist: "private QA dist entry missing",
  clean: "clean",
};

const RUNTIME_POSTBUILD_REASON_LABELS = {
  force_runtime_postbuild: "forced by OPENCLAW_FORCE_RUNTIME_POSTBUILD",
  missing_runtime_postbuild_output: "required runtime postbuild output missing",
  missing_runtime_postbuild_stamp: "runtime postbuild stamp missing",
  missing_build_stamp: "build stamp missing",
  build_stamp_newer: "build stamp newer than runtime postbuild stamp",
  runtime_postbuild_stamp_missing_head: "runtime postbuild stamp missing git head",
  git_head_changed: "git head changed",
  dirty_runtime_postbuild_inputs: "dirty runtime postbuild inputs",
  runtime_postbuild_input_mtime_newer: "runtime postbuild input mtime newer than stamp",
  clean: "clean",
};

const formatBuildReason = (reason: BuildRequirement["reason"]) => BUILD_REASON_LABELS[reason];
const formatRuntimePostBuildReason = (reason: RuntimePostBuildRequirement["reason"]) =>
  RUNTIME_POSTBUILD_REASON_LABELS[reason];

const SIGNAL_EXIT_CODES = {
  SIGINT: 130,
  SIGTERM: 143,
};

const isSignalKey = (signal: NodeJS.Signals): signal is keyof typeof SIGNAL_EXIT_CODES =>
  Object.hasOwn(SIGNAL_EXIT_CODES, signal);

const getSignalExitCode = (signal: NodeJS.Signals) =>
  isSignalKey(signal) ? SIGNAL_EXIT_CODES[signal] : 1;

const RUN_NODE_OUTPUT_LOG_ENV = "OPENCLAW_RUN_NODE_OUTPUT_LOG";
const RUN_NODE_CPU_PROF_DIR_ENV = "OPENCLAW_RUN_NODE_CPU_PROF_DIR";
const RUN_NODE_CPU_PROF_MAX_FILES_ENV = "OPENCLAW_RUN_NODE_CPU_PROF_MAX_FILES";
const RUN_NODE_FILTER_SYNC_IO_STDERR_ENV = "OPENCLAW_RUN_NODE_FILTER_SYNC_IO_STDERR";
const RUN_NODE_BUILD_LOCK_TIMEOUT_ENV = "OPENCLAW_RUN_NODE_BUILD_LOCK_TIMEOUT_MS";
const RUN_NODE_BUILD_LOCK_POLL_ENV = "OPENCLAW_RUN_NODE_BUILD_LOCK_POLL_MS";
const RUN_NODE_BUILD_LOCK_STALE_ENV = "OPENCLAW_RUN_NODE_BUILD_LOCK_STALE_MS";
const RUN_NODE_SKIP_DTS_BUILD_ENV = "OPENCLAW_RUN_NODE_SKIP_DTS_BUILD";
const DEFAULT_BUILD_LOCK_TIMEOUT_MS = 5 * 60 * 1000;
const DEFAULT_BUILD_LOCK_POLL_MS = 100;
const DEFAULT_BUILD_LOCK_STALE_MS = 10 * 60 * 1000;

const hasErrorCode = (error: unknown, code: string) =>
  error instanceof Error && "code" in error && error.code === code;

const getErrorMessage = (error: unknown) =>
  error instanceof Error ? error.message : "unknown error";

const parsePositiveIntegerEnv = (env: NodeJS.ProcessEnv, name: string, fallback: number) => {
  const raw = env[name];
  if (raw === undefined || raw === "") {
    return fallback;
  }
  const parsed = Number(raw);
  return Number.isInteger(parsed) && parsed > 0 ? parsed : fallback;
};

const resolveRunNodeOutputLogPath = (deps: RunNodeDeps) => {
  const outputLog = deps.env[RUN_NODE_OUTPUT_LOG_ENV]?.trim();
  if (!outputLog) {
    return null;
  }
  return path.resolve(deps.cwd, outputLog);
};

const createRunNodeOutputTee = (deps: RunNodeDeps): RunNodeOutputTee | null => {
  const outputLogPath = resolveRunNodeOutputLogPath(deps);
  if (!outputLogPath) {
    return null;
  }
  try {
    const existing = deps.fs.statSync(outputLogPath);
    if (existing.isDirectory()) {
      return {
        write() {},
        async close() {
          throw new Error(`output log path is a directory: ${outputLogPath}`);
        },
      };
    }
  } catch (error) {
    const errorCode = error instanceof Error && "code" in error ? error.code : undefined;
    if (errorCode && errorCode !== "ENOENT") {
      return {
        write() {},
        async close() {
          throw error;
        },
      };
    }
  }
  deps.fs.mkdirSync(path.dirname(outputLogPath), { recursive: true });
  const stream = deps.fs.createWriteStream(outputLogPath, {
    flags: "a",
    mode: 0o600,
  });
  let streamError: Error | null = null;
  const getStreamError = () => streamError;
  stream.on("error", (error: Error) => {
    streamError = error;
  });
  deps.env[RUN_NODE_OUTPUT_LOG_ENV] = outputLogPath;
  return {
    write(chunk: string | Uint8Array) {
      if (!streamError) {
        stream.write(chunk);
      }
    },
    async close() {
      const closeError = getStreamError();
      if (closeError) {
        throw closeError;
      }
      await new Promise((resolve, reject) => {
        stream.once("error", reject);
        stream.end(resolve);
      });
      const endError = getStreamError();
      if (endError) {
        throw endError;
      }
    },
  };
};

const logRunner = (message: string, deps: RunNodeLogDeps) => {
  if (deps.env.OPENCLAW_RUNNER_LOG === "0") {
    return;
  }
  const line = `[openclaw] ${message}\n`;
  deps.runNodeProgress?.clearLine();
  deps.stderr.write(line);
  deps.runNodeProgress?.render();
  deps.outputTee?.write(line);
};

const RUN_NODE_PROGRESS_FRAMES = ["-", "\\", "|", "/"];

const shouldUseRunNodeProgress = (deps: RunNodeDeps) =>
  deps.stderr?.isTTY === true &&
  deps.env.OPENCLAW_RUNNER_PROGRESS !== "0" &&
  deps.env.CI !== "true" &&
  !deps.outputTee;

const createRunNodeProgress = (label: string, deps: RunNodeDeps) => {
  if (!shouldUseRunNodeProgress(deps)) {
    return null;
  }
  const startedAt = Date.now();
  let frameIndex = 0;
  let active = true;
  let visible = false;

  const clearLine = () => {
    if (!visible) {
      return;
    }
    deps.stderr.write("\r\x1b[2K");
    visible = false;
  };
  const render = () => {
    if (!active) {
      return;
    }
    const elapsedSeconds = Math.max(0, Math.round((Date.now() - startedAt) / 1000));
    const frame = RUN_NODE_PROGRESS_FRAMES[frameIndex % RUN_NODE_PROGRESS_FRAMES.length];
    frameIndex += 1;
    deps.stderr.write(`\r[openclaw] ${frame} ${label} (${elapsedSeconds}s)`);
    visible = true;
  };
  const timer = setInterval(render, 120);
  timer.unref?.();
  render();

  return {
    clearLine,
    render,
    stop() {
      if (!active) {
        return;
      }
      active = false;
      clearInterval(timer);
      clearLine();
    },
  };
};

const withRunNodeProgress = async <T,>(
  deps: RunNodeDeps,
  label: string,
  callback: () => Promise<T>,
) => {
  const previousProgress = deps.runNodeProgress;
  const progress = createRunNodeProgress(label, deps);
  if (progress) {
    deps.runNodeProgress = progress;
  }
  try {
    return await callback();
  } finally {
    if (progress) {
      progress.stop();
      deps.runNodeProgress = previousProgress;
    }
  }
};

const writeRunnerStream = (
  deps: RunNodeDeps,
  stream: RunNodeWritable,
  chunk: string | Uint8Array,
) => {
  deps.runNodeProgress?.clearLine();
  stream.write(chunk);
  deps.runNodeProgress?.render();
};

const shouldPipeSpawnedOutput = (deps: RunNodeDeps) =>
  Boolean(deps.outputTee || deps.runNodeProgress);

const sanitizeCpuProfileNamePart = (value: string | undefined) => {
  const normalized = (value ?? "")
    .trim()
    .toLowerCase()
    .replace(/[^a-z0-9_.-]+/g, "-")
    .replace(/^-+|-+$/g, "");
  return normalized || "command";
};

const parsePositiveInteger = (value: unknown) => {
  const parsed = Number(value);
  return Number.isInteger(parsed) && parsed > 0 ? parsed : null;
};

const listRunNodeCpuProfiles = (
  deps: RunNodeDeps,
  absoluteProfileDir: string,
  commandName: string,
) => {
  let entries;
  try {
    entries = deps.fs.readdirSync(absoluteProfileDir, { withFileTypes: true });
  } catch {
    return [];
  }
  const prefix = `openclaw-${commandName}-`;
  return entries
    .filter(
      (entry) =>
        entry.isFile() && entry.name.startsWith(prefix) && entry.name.endsWith(".cpuprofile"),
    )
    .flatMap((entry) => {
      const filePath = path.join(absoluteProfileDir, entry.name);
      try {
        const stat = deps.fs.statSync(filePath);
        return [{ filePath, mtimeMs: stat.mtimeMs }];
      } catch {
        return [];
      }
    })
    .toSorted((left, right) => left.mtimeMs - right.mtimeMs);
};

const pruneRunNodeCpuProfiles = (
  deps: RunNodeDeps,
  absoluteProfileDir: string,
  commandName: string,
) => {
  const maxFiles = parsePositiveInteger(deps.env[RUN_NODE_CPU_PROF_MAX_FILES_ENV]);
  if (!maxFiles) {
    return;
  }
  const profiles = listRunNodeCpuProfiles(deps, absoluteProfileDir, commandName);
  const deleteCount = Math.max(0, profiles.length - maxFiles + 1);
  for (const profile of profiles.slice(0, deleteCount)) {
    try {
      deps.fs.rmSync(profile.filePath, { force: true });
    } catch {
      // Best-effort artifact rotation; profiling should not fail the command.
    }
  }
};

const resolveRunNodeCpuProfileArgs = (deps: RunNodeDeps) => {
  const profileDir = deps.env[RUN_NODE_CPU_PROF_DIR_ENV]?.trim();
  if (!profileDir) {
    return [];
  }

  const absoluteProfileDir = path.resolve(deps.cwd, profileDir);
  deps.fs.mkdirSync(absoluteProfileDir, { recursive: true });
  deps.env[RUN_NODE_CPU_PROF_DIR_ENV] = absoluteProfileDir;

  const commandName = sanitizeCpuProfileNamePart(deps.args[0]);
  pruneRunNodeCpuProfiles(deps, absoluteProfileDir, commandName);
  const timestamp = new Date().toISOString().replace(/[:.]/g, "-");
  const pid = Number.isInteger(deps.process.pid) && deps.process.pid > 0 ? deps.process.pid : "pid";
  const profileName = `openclaw-${commandName}-${pid}-${timestamp}.cpuprofile`;
  const profilePath = path.join(absoluteProfileDir, profileName);
  const relativeProfilePath = path.relative(deps.cwd, profilePath) || profilePath;
  logRunner(`Writing Node CPU profile to ${relativeProfilePath}.`, deps);
  return ["--cpu-prof", `--cpu-prof-dir=${absoluteProfileDir}`, `--cpu-prof-name=${profileName}`];
};

const resolveRunNodeDiagnosticArgs = (deps: RunNodeDeps) => {
  const args = [...resolveRunNodeCpuProfileArgs(deps)];
  if (deps.env.OPENCLAW_TRACE_SYNC_IO === "1") {
    logRunner("Enabling Node --trace-sync-io for startup I/O diagnostics.", deps);
    args.push("--trace-sync-io");
  }
  return args;
};

const shouldUseRunNodeChildProcessGroup = (deps: RunNodeDeps) =>
  deps.platform !== "win32" && !deps.process.stdin?.isTTY;

const signalSpawnedProcess = (
  childProcess: RunNodeChild,
  signal: NodeJS.Signals,
  useProcessGroup: boolean,
  deps: RunNodeDeps,
) => {
  if (useProcessGroup && typeof childProcess.pid === "number") {
    try {
      deps.signalProcess(-childProcess.pid, signal);
      return;
    } catch (error) {
      if (hasErrorCode(error, "ESRCH") || hasErrorCode(error, "EPERM")) {
        return;
      }
    }
  }
  try {
    childProcess.kill?.(signal);
  } catch {
    // Best-effort only. Exit handling still happens via the child "exit" event.
  }
};

const waitForSpawnedProcess = async (childProcess: RunNodeChild, deps: RunNodeDeps) => {
  let forwardedSignal: NodeJS.Signals | null = null;
  let forceKillTimer: NodeJS.Timeout | null = null;
  let cleanedForwardedSignalGroup = false;
  const useProcessGroup = shouldUseRunNodeChildProcessGroup(deps);

  const cleanupSignals = () => {
    if (forceKillTimer) {
      clearTimeout(forceKillTimer);
    }
    if (onSigInt) {
      deps.process.off("SIGINT", onSigInt);
    }
    if (onSigTerm) {
      deps.process.off("SIGTERM", onSigTerm);
    }
  };

  const forwardSignal = (signal: NodeJS.Signals) => {
    if (forwardedSignal) {
      return;
    }
    forwardedSignal = signal;
    signalSpawnedProcess(childProcess, signal, useProcessGroup, deps);
    forceKillTimer = setTimeout(() => {
      forceKillTimer = null;
      signalSpawnedProcess(childProcess, "SIGKILL", useProcessGroup, deps);
    }, RUN_NODE_SIGNAL_FORCE_KILL_AFTER_MS);
  };

  const onSigInt = () => {
    forwardSignal("SIGINT");
  };
  const onSigTerm = () => {
    forwardSignal("SIGTERM");
  };

  deps.process.on("SIGINT", onSigInt);
  deps.process.on("SIGTERM", onSigTerm);

  try {
    return await new Promise<SpawnedProcessResult>((resolve) => {
      let settled = false;
      const settle = (res: SpawnedProcessResult) => {
        if (settled) {
          return;
        }
        settled = true;
        resolve(res);
      };
      const handleError = (error: Error) => {
        logRunner(`Spawn failed: ${error.message}`, deps);
        settle({ exitCode: 1, exitSignal: null, forwardedSignal });
      };
      const handleExit = (exitCode: number | null, exitSignal: NodeJS.Signals | null) => {
        if (forwardedSignal && !cleanedForwardedSignalGroup) {
          cleanedForwardedSignalGroup = true;
          signalSpawnedProcess(childProcess, "SIGKILL", useProcessGroup, deps);
        }
        settle({ exitCode, exitSignal, forwardedSignal });
      };
      if ("once" in childProcess) {
        childProcess.on("error", handleError);
        childProcess.on("exit", handleExit);
      } else {
        childProcess.on("error", handleError);
        childProcess.on("exit", handleExit);
      }
    });
  } finally {
    cleanupSignals();
  }
};

const getInterruptedSpawnExitCode = (res: SpawnedProcessResult) => {
  if (res.exitSignal) {
    return getSignalExitCode(res.exitSignal);
  }
  if (res.forwardedSignal) {
    return getSignalExitCode(res.forwardedSignal);
  }
  return null;
};

const runNodeChild = async (deps: RunNodeDeps, args: string[]) => {
  const useProcessGroup = shouldUseRunNodeChildProcessGroup(deps);
  const nodeProcess = asRunNodeChild(
    deps.spawn(deps.execPath, args, {
      cwd: deps.cwd,
      detached: useProcessGroup,
      env: deps.env,
      stdio: deps.outputTee ? ["inherit", "pipe", "pipe"] : "inherit",
    }),
  );
  pipeSpawnedOutput(nodeProcess, deps);
  const res = await waitForSpawnedProcess(nodeProcess, deps);
  const interruptedExitCode = getInterruptedSpawnExitCode(res);
  if (interruptedExitCode !== null) {
    return interruptedExitCode;
  }
  return res.exitCode ?? 1;
};

const runOpenClaw = (deps: RunNodeDeps) =>
  runNodeChild(deps, [...resolveRunNodeDiagnosticArgs(deps), "openclaw.mjs", ...deps.args]);

const pipeSpawnedOutput = (
  childProcess: RunNodeChild,
  deps: RunNodeDeps,
  options: { stdoutTarget?: "stdout" | "stderr" } = {},
) => {
  const stdoutTarget = options.stdoutTarget ?? "stdout";
  if (!shouldPipeSpawnedOutput(deps) && stdoutTarget !== "stderr") {
    return;
  }
  const stderrFilter =
    deps.env[RUN_NODE_FILTER_SYNC_IO_STDERR_ENV] === "1"
      ? createSyncIoTraceStderrFilter(deps)
      : null;
  const stdout: Pick<NodeJS.ReadableStream, "on"> | null | undefined = childProcess.stdout;
  const stderr: Pick<NodeJS.ReadableStream, "on"> | null | undefined = childProcess.stderr;
  stdout?.on("data", (chunk: string | Uint8Array) => {
    const target = stdoutTarget === "stderr" ? deps.stderr : deps.stdout;
    writeRunnerStream(deps, target, chunk);
    deps.outputTee?.write(chunk);
  });
  stderr?.on("data", (chunk: string | Uint8Array) => {
    deps.runNodeProgress?.clearLine();
    if (stderrFilter) {
      stderrFilter.write(chunk);
    } else {
      deps.stderr.write(chunk);
    }
    deps.runNodeProgress?.render();
    deps.outputTee?.write(chunk);
  });
  stderr?.on("end", () => {
    stderrFilter?.flush();
  });
};

const createSyncIoTraceStderrFilter = (deps: RunNodeDeps) => {
  let buffer = "";
  let inSyncIoTrace = false;

  const shouldSuppressLine = (line: string) => {
    const text = line.replace(/\r?\n$/, "");
    if (/^\(node:\d+\) WARNING: Detected use of sync API/.test(text)) {
      inSyncIoTrace = true;
      return true;
    }
    if (!inSyncIoTrace) {
      return false;
    }
    if (text.trim() === "") {
      inSyncIoTrace = false;
      return true;
    }
    if (/^\s+at\b/.test(text)) {
      return true;
    }
    inSyncIoTrace = false;
    return false;
  };

  const writeLine = (line: string) => {
    if (!shouldSuppressLine(line)) {
      deps.stderr.write(line);
    }
  };

  return {
    write(chunk: string | Uint8Array) {
      buffer += String(chunk);
      while (true) {
        const newlineIndex = buffer.indexOf("\n");
        if (newlineIndex === -1) {
          break;
        }
        const line = buffer.slice(0, newlineIndex + 1);
        buffer = buffer.slice(newlineIndex + 1);
        writeLine(line);
      }
    },
    flush() {
      if (!buffer) {
        return;
      }
      writeLine(buffer);
      buffer = "";
    },
  };
};

const closeRunNodeOutputTee = async (deps: RunNodeDeps, exitCode: number) => {
  if (!deps.outputTee) {
    return exitCode;
  }
  try {
    await deps.outputTee.close();
  } catch (error) {
    deps.stderr.write(`[openclaw] Failed to write output log: ${getErrorMessage(error)}\n`);
    return exitCode === 0 ? 1 : exitCode;
  }
  return exitCode;
};

const readBuildLockOwnerPid = (deps: RunNodeLockDeps, lockDir: string) => {
  try {
    const raw = deps.fs.readFileSync(path.join(lockDir, "owner.json"), "utf8");
    const parsed = JSON.parse(raw);
    const pid = Number(parsed?.pid);
    return Number.isInteger(pid) && pid > 0 ? pid : null;
  } catch {
    return null;
  }
};

const isBuildLockOwnerDead = (deps: RunNodeLockDeps, pid: number) => {
  try {
    deps.process.kill(pid, 0);
    return false;
  } catch (error) {
    return hasErrorCode(error, "ESRCH");
  }
};

const removeStaleBuildLock = (deps: RunNodeLockDeps, lockDir: string, staleMs: number) => {
  try {
    const ownerPid = readBuildLockOwnerPid(deps, lockDir);
    if (ownerPid !== null && isBuildLockOwnerDead(deps, ownerPid)) {
      deps.fs.rmSync(lockDir, { recursive: true, force: true });
      return true;
    }
    const stats = deps.fs.statSync(lockDir);
    if (Date.now() - stats.mtimeMs < staleMs) {
      return false;
    }
    deps.fs.rmSync(lockDir, { recursive: true, force: true });
    return true;
  } catch {
    return false;
  }
};

/** Acquires the dev-build lock used to serialize local rebuilds. */
export const acquireRunNodeBuildLock = async (deps: RunNodeLockDeps): Promise<() => void> => {
  const lockRoot = path.join(deps.cwd, ".artifacts");
  const lockDir = path.join(lockRoot, "run-node-build.lock");
  const timeoutMs = parsePositiveIntegerEnv(
    deps.env,
    RUN_NODE_BUILD_LOCK_TIMEOUT_ENV,
    DEFAULT_BUILD_LOCK_TIMEOUT_MS,
  );
  const pollMs = parsePositiveIntegerEnv(
    deps.env,
    RUN_NODE_BUILD_LOCK_POLL_ENV,
    DEFAULT_BUILD_LOCK_POLL_MS,
  );
  const staleMs = parsePositiveIntegerEnv(
    deps.env,
    RUN_NODE_BUILD_LOCK_STALE_ENV,
    DEFAULT_BUILD_LOCK_STALE_MS,
  );
  const startedAt = Date.now();
  let waitLogBudget = 1;
  const consumeWaitLog = () => waitLogBudget-- > 0;

  while (Date.now() - startedAt < timeoutMs) {
    try {
      deps.fs.mkdirSync(lockRoot, { recursive: true });
      deps.fs.mkdirSync(lockDir);
      try {
        deps.fs.writeFileSync(
          path.join(lockDir, "owner.json"),
          `${JSON.stringify(
            {
              pid: deps.process.pid,
              startedAt: new Date().toISOString(),
              args: deps.args,
            },
            null,
            2,
          )}\n`,
          "utf8",
        );
      } catch {
        // Owner metadata is diagnostic only; the directory itself is the lock.
      }
      let released = false;
      const removeLockDir = () => {
        if (released) {
          return;
        }
        released = true;
        try {
          deps.fs.rmSync(lockDir, { recursive: true, force: true });
        } catch {
          // Best-effort cleanup; a follow-up waiter will fall back to staleness
          // detection if the directory is still present.
        }
      };
      const onSignal = () => removeLockDir();
      const onExit = () => removeLockDir();
      deps.process.on("SIGINT", onSignal);
      deps.process.on("SIGTERM", onSignal);
      deps.process.on("exit", onExit);
      return () => {
        deps.process.off("SIGINT", onSignal);
        deps.process.off("SIGTERM", onSignal);
        deps.process.off("exit", onExit);
        removeLockDir();
      };
    } catch (error) {
      if (!hasErrorCode(error, "EEXIST")) {
        throw error;
      }
      if (removeStaleBuildLock(deps, lockDir, staleMs)) {
        continue;
      }
      if (consumeWaitLog()) {
        logRunner("Waiting for TypeScript/runtime artifact lock.", deps);
      }
      await sleep(pollMs);
    }
  }

  throw new Error(`timed out waiting for ${path.relative(deps.cwd, lockDir)}`);
};

const withRunNodeBuildLock = async <T,>(deps: RunNodeDeps, callback: () => Promise<T>) => {
  const release = await acquireRunNodeBuildLock(deps);
  try {
    return await callback();
  } finally {
    release();
  }
};

const syncRuntimeArtifacts = async (deps: RunNodeDeps) => {
  try {
    await deps.runRuntimePostBuild({ cwd: deps.cwd, env: deps.env });
  } catch (error) {
    logRunner(`Failed to write runtime build artifacts: ${getErrorMessage(error)}`, deps);
    return false;
  }
  return true;
};

const writeRuntimePostBuildStamp = (deps: RunNodeDeps) => {
  try {
    writeDistRuntimePostBuildStamp({
      cwd: deps.cwd,
      fs: deps.fs,
      spawnSync: deps.spawnSync,
    });
  } catch (error) {
    logRunner(`Failed to write runtime postbuild stamp: ${getErrorMessage(error)}`, deps);
  }
};

const syncRuntimeArtifactsAndStamp = async (deps: RunNodeDeps) => {
  const synced = await syncRuntimeArtifacts(deps);
  if (synced) {
    writeRuntimePostBuildStamp(deps);
  }
  return synced;
};

const writeBuildStamp = (deps: RunNodeDeps) => {
  try {
    writeDistBuildStamp({
      cwd: deps.cwd,
      fs: deps.fs,
      spawnSync: deps.spawnSync,
    });
  } catch (error) {
    // Best-effort stamp; still allow the runner to start.
    logRunner(`Failed to write build stamp: ${getErrorMessage(error)}`, deps);
  }
};

const shouldSkipWatchRuntimeSync = (deps: RunNodeDeps, requirement: RuntimePostBuildRequirement) =>
  deps.env.OPENCLAW_WATCH_MODE === "1" &&
  requirement.reason === "missing_runtime_postbuild_stamp" &&
  hasDirtyRuntimePostBuildInputs(deps) !== true &&
  !hasMissingRequiredRuntimePostBuildOutput(deps);

const isGatewayClientCommand = (args: string[]) =>
  args[0] === "dashboard" ||
  (args[0] === "gateway" && (args[1] === "call" || args[1] === "status")) ||
  (args[0] === "agent" && !args.includes("--local"));

const shouldFastPathExistingDistForGatewayClient = (deps: RunNodeDeps) =>
  isGatewayClientCommand(deps.args) &&
  deps.env.OPENCLAW_FORCE_BUILD !== "1" &&
  statMtime(deps.distEntry, deps.fs) != null &&
  canUseStampedGatewayClientDist(deps);

const canUseStampedGatewayClientDist = (deps: RunNodeDeps) => {
  const currentHead = resolveGitHead(deps);
  if (!currentHead) {
    return false;
  }
  const buildStamp = readBuildStamp(deps);
  if (buildStamp.mtime == null || buildStamp.head !== currentHead) {
    return false;
  }
  for (const filePath of deps.configFiles) {
    const mtime = statMtime(filePath, deps.fs);
    if (mtime != null && mtime > buildStamp.mtime) {
      return false;
    }
  }
  if (hasMissingBuiltBundledPluginRuntimeEntryOutput(deps)) {
    return false;
  }
  const runtimeStamp = readRuntimePostBuildStamp(deps);
  if (
    runtimeStamp.mtime == null ||
    runtimeStamp.mtime < buildStamp.mtime ||
    runtimeStamp.head !== currentHead ||
    deps.env.OPENCLAW_FORCE_RUNTIME_POSTBUILD === "1"
  ) {
    return false;
  }
  return !resolveRuntimePostBuildRequirement(deps).shouldSync;
};

type QaReportScript = "qa-parity-report.ts" | "qa-coverage-report.ts";

const resolveQaReportSourceScript = (deps: RunNodeDeps, buildRequirement: BuildRequirement) => {
  const sourceEntrypoint = path.join(deps.cwd, "extensions", "qa-lab", "src", "cli.runtime.ts");
  if (
    buildRequirement.reason !== "missing_private_qa_dist" ||
    deps.args[0] !== "qa" ||
    deps.env.OPENCLAW_FORCE_BUILD === "1" ||
    statMtime(sourceEntrypoint, deps.fs) == null
  ) {
    return null;
  }
  return deps.args[1] === "parity-report"
    ? "qa-parity-report.ts"
    : deps.args[1] === "coverage"
      ? "qa-coverage-report.ts"
      : null;
};

const runQaReportFromSource = (deps: RunNodeDeps, script: QaReportScript) => {
  const sourceEntrypoint = path.join(deps.cwd, "scripts", script);
  return runNodeChild(deps, ["--import", "tsx", sourceEntrypoint, ...deps.args.slice(2)]);
};

function createRunNodeDeps(params: RunNodeMainParams) {
  const cwd = params.cwd ?? process.cwd();
  const distRoot = path.join(cwd, "dist");
  const env = params.env ? { ...params.env } : { ...process.env };
  const mutableState: RunNodeMutableState = {
    outputTee: null,
    runNodeProgress: undefined,
  };
  return {
    spawn: params.spawn ?? spawn,
    spawnSync: params.spawnSync ?? spawnSync,
    fs: params.fs ?? fs,
    stderr: params.stderr ?? process.stderr,
    stdout: params.stdout ?? process.stdout,
    process: params.process ?? process,
    execPath: params.execPath ?? process.execPath,
    cwd,
    args: params.args ?? process.argv.slice(2),
    env,
    platform: params.platform ?? process.platform,
    signalProcess:
      params.signalProcess ??
      ((pid: number, signal?: NodeJS.Signals | number) => process.kill(pid, signal)),
    runRuntimePostBuild: params.runRuntimePostBuild ?? runRuntimePostBuild,
    distRoot,
    distEntry: path.join(distRoot, "/entry.js"),
    buildStampPath: path.join(distRoot, BUILD_STAMP_FILE),
    runtimePostBuildStampPath: path.join(distRoot, RUNTIME_POSTBUILD_STAMP_FILE),
    sourceRoots: runNodeSourceRoots.map((name) => ({ name, path: path.join(cwd, name) })),
    configFiles: runNodeConfigFiles.map((filePath) => path.join(cwd, filePath)),
    privateQaRequiredDistEntries: resolvePrivateQaRequiredDistEntries(distRoot),
    ...mutableState,
  };
}

/** Runs the dev build/watch loop and keeps the child CLI in sync with changes. */
export async function runNodeMain(params: RunNodeMainParams = {}): Promise<number> {
  const deps = createRunNodeDeps(params);
  if (deps.args[0] === "qa") {
    deps.env.OPENCLAW_BUILD_PRIVATE_QA = "1";
    deps.env.OPENCLAW_ENABLE_PRIVATE_QA_CLI = "1";
    deps.env.OPENCLAW_DISABLE_BUNDLED_PLUGINS ??= "0";
  }
  deps.outputTee = createRunNodeOutputTee(deps);

  try {
    let exitCode = 1;
    if (shouldFastPathExistingDistForGatewayClient(deps)) {
      exitCode = await runOpenClaw(deps);
      return await closeRunNodeOutputTee(deps, exitCode);
    }
    const buildRequirement = resolveBuildRequirement(deps);
    const qaReportScript = resolveQaReportSourceScript(deps, buildRequirement);
    if (qaReportScript) {
      const reportName = qaReportScript === "qa-parity-report.ts" ? "parity" : "coverage";
      logRunner(
        `Running QA ${reportName} report from source without rebuilding private QA dist.`,
        deps,
      );
      exitCode = await runQaReportFromSource(deps, qaReportScript);
      return await closeRunNodeOutputTee(deps, exitCode);
    }
    if (!buildRequirement.shouldBuild) {
      const runtimePostBuildRequirement = resolveRuntimePostBuildRequirement(deps);
      if (
        runtimePostBuildRequirement.shouldSync &&
        !shouldSkipWatchRuntimeSync(deps, runtimePostBuildRequirement)
      ) {
        const synced = await withRunNodeBuildLock(deps, async () => {
          const lockedRuntimePostBuildRequirement = resolveRuntimePostBuildRequirement(deps);
          if (!lockedRuntimePostBuildRequirement.shouldSync) {
            return true;
          }
          logRunner(
            `Syncing runtime artifacts (${lockedRuntimePostBuildRequirement.reason} - ${formatRuntimePostBuildReason(lockedRuntimePostBuildRequirement.reason)}).`,
            deps,
          );
          return await syncRuntimeArtifactsAndStamp(deps);
        });
        if (!synced) {
          return await closeRunNodeOutputTee(deps, 1);
        }
      }
      exitCode = await runOpenClaw(deps);
      return await closeRunNodeOutputTee(deps, exitCode);
    }

    const buildExitCode = await withRunNodeBuildLock(deps, async () => {
      if (shouldFastPathExistingDistForGatewayClient(deps)) {
        return 0;
      }
      const lockedBuildRequirement = resolveBuildRequirement(deps);
      if (!lockedBuildRequirement.shouldBuild) {
        const runtimePostBuildRequirement = resolveRuntimePostBuildRequirement(deps);
        if (!runtimePostBuildRequirement.shouldSync) {
          return 0;
        }
        logRunner(
          `Syncing runtime artifacts (${runtimePostBuildRequirement.reason} - ${formatRuntimePostBuildReason(runtimePostBuildRequirement.reason)}).`,
          deps,
        );
        return (await syncRuntimeArtifactsAndStamp(deps)) ? 0 : 1;
      }

      logRunner(
        `Building TypeScript (dist is stale: ${lockedBuildRequirement.reason} - ${formatBuildReason(lockedBuildRequirement.reason)}).`,
        deps,
      );
      logRunner("Building bundled plugin assets.", deps);
      const buildCmd = deps.execPath;
      const compileExitCode = await withRunNodeProgress(
        deps,
        "Building local CLI artifacts",
        async () => {
          const assetBuild = asRunNodeChild(
            deps.spawn(buildCmd, bundledPluginAssetBuildArgs, {
              cwd: deps.cwd,
              detached: shouldUseRunNodeChildProcessGroup(deps),
              env: deps.env,
              stdio: ["inherit", "pipe", "pipe"],
            }),
          );
          pipeSpawnedOutput(assetBuild, deps, { stdoutTarget: "stderr" });
          const assetBuildRes = await waitForSpawnedProcess(assetBuild, deps);
          const assetBuildInterruptedExitCode = getInterruptedSpawnExitCode(assetBuildRes);
          if (assetBuildInterruptedExitCode !== null) {
            return assetBuildInterruptedExitCode;
          }
          if (assetBuildRes.exitCode !== 0 && assetBuildRes.exitCode !== null) {
            return assetBuildRes.exitCode;
          }

          const build = asRunNodeChild(
            deps.spawn(buildCmd, compilerArgs, {
              cwd: deps.cwd,
              detached: shouldUseRunNodeChildProcessGroup(deps),
              env: {
                ...deps.env,
                [RUN_NODE_SKIP_DTS_BUILD_ENV]: deps.env[RUN_NODE_SKIP_DTS_BUILD_ENV] ?? "1",
              },
              stdio: ["inherit", "pipe", "pipe"],
            }),
          );
          pipeSpawnedOutput(build, deps, { stdoutTarget: "stderr" });

          const buildRes = await waitForSpawnedProcess(build, deps);
          const interruptedExitCode = getInterruptedSpawnExitCode(buildRes);
          if (interruptedExitCode !== null) {
            return interruptedExitCode;
          }
          if (buildRes.exitCode !== 0 && buildRes.exitCode !== null) {
            return buildRes.exitCode;
          }
          return 0;
        },
      );
      if (compileExitCode !== 0) {
        return compileExitCode;
      }
      if (!(await syncRuntimeArtifacts(deps))) {
        return 1;
      }
      writeBuildStamp(deps);
      writeRuntimePostBuildStamp(deps);
      return 0;
    });
    if (buildExitCode !== 0) {
      return await closeRunNodeOutputTee(deps, buildExitCode);
    }
    exitCode = await runOpenClaw(deps);
    return await closeRunNodeOutputTee(deps, exitCode);
  } catch (error) {
    await closeRunNodeOutputTee(deps, 1);
    throw error;
  }
}

if (import.meta.url === pathToFileURL(process.argv[1] ?? "").href) {
  void runNodeMain()
    .then((code) => process.exit(code))
    .catch((err: unknown) => {
      console.error(err);
      process.exit(1);
    });
}