feat: add DSH plugin marketplace and shared MCP

GoodBuddy could share Skills across runtimes, but custom MCP remained limited and DeepSeek Harness could not manage third-party extensions. The app now provides a default-off DSH npm marketplace with managed installation, configuration, failure isolation, and packaged npm support, while assigned custom MCP is available to managed OpenCode, Continue Agent, and DeepSeek Harness in Execute.

Third-party DSH install scripts, initialization, and tools run with the current user's permissions. Ask remains read-only at dispatch, and turning off the marketplace hides management without disabling installed plugins.

Release note: 新增默认关闭的 DSH 插件市场，并让自定义 MCP 可分配给 OpenCode、Continue 和 DeepSeek Harness；安装第三方插件前会明确提示当前用户权限边界。

build/run-packaged-deepseek-harness-smoke.cjs

@@ -2,6 +2,7 @@
 
 const { spawn } = require('node:child_process')
 const {
+  chmod,
   copyFile,
   mkdir,
   mkdtemp,
@@ -11,7 +12,7 @@ const {
 } = require('node:fs/promises')
 const { statSync } = require('node:fs')
 const { tmpdir } = require('node:os')
-const { join, resolve } = require('node:path')
+const { delimiter, join, resolve } = require('node:path')
 
 const unpackedPath = process.argv[2]
   ? resolve(process.argv[2])
@@ -28,20 +29,57 @@ const host = join(
   'main',
   'deepseek-harness-host-bootstrap.js'
 )
+const npmRoot = join(unpackedPath, 'resources', 'runtimes', 'npm')
+const npmCli = join(npmRoot, 'bin', 'npm-cli.js')
+const npmManifestPath = join(npmRoot, 'package.json')
 
 for (const [path, description] of [
   [executable, 'packaged Electron executable'],
-  [host, 'packaged DeepSeek Harness host']
+  [host, 'packaged DeepSeek Harness host'],
+  [npmCli, 'packaged npm CLI'],
+  [npmManifestPath, 'packaged npm manifest']
 ]) {
   if (!statSync(path, { throwIfNoEntry: false })?.isFile()) {
     throw new Error(`${description} is missing: ${path}`)
   }
 }
 
-function run(command, args, env) {
+function quotePosixShell(value) {
+  return `'${value.replaceAll("'", "'\\''")}'`
+}
+
+async function prepareNodeCommand(directory) {
+  await mkdir(directory, { recursive: true })
+  if (process.platform === 'win32') {
+    await writeFile(
+      join(directory, 'node.cmd'),
+      [
+        '@echo off',
+        'set "ELECTRON_RUN_AS_NODE=1"',
+        `"${executable.replaceAll('%', '%%')}" %*`,
+        ''
+      ].join('\r\n'),
+      'utf8'
+    )
+    return
+  }
+  const commandPath = join(directory, 'node')
+  await writeFile(
+    commandPath,
+    [
+      '#!/bin/sh',
+      `ELECTRON_RUN_AS_NODE=1 exec ${quotePosixShell(executable)} "$@"`,
+      ''
+    ].join('\n'),
+    'utf8'
+  )
+  await chmod(commandPath, 0o700)
+}
+
+function run(command, args, env, cwd = resolve('.')) {
   return new Promise((resolveExit, rejectExit) => {
     const child = spawn(command, args, {
-      cwd: resolve('.'),
+      cwd,
       env,
       stdio: ['ignore', 'pipe', 'pipe'],
       windowsHide: true
@@ -67,6 +105,9 @@ async function main() {
     const project = join(root, 'app')
     const profile = join(root, 'profile')
     const resultPath = join(root, 'result.json')
+    const packageManagerBin = join(root, 'package-manager-bin')
+    const npmProject = join(root, 'npm-project')
+    const npmFixture = join(root, 'npm-fixture')
     await mkdir(project, { recursive: true })
 
     await copyFile(
@@ -116,9 +157,16 @@ async function main() {
       'never',
       `--config.directories.output=${join(root, 'dist')}`
     ]
-    if (process.env.GOODBUDDY_ELECTRON_DIST) {
+    const electronDist = process.env.GOODBUDDY_ELECTRON_DIST
+      ? resolve(process.env.GOODBUDDY_ELECTRON_DIST)
+      : resolve('node_modules/electron/dist')
+    if (
+      statSync(electronDist, {
+        throwIfNoEntry: false
+      })?.isDirectory()
+    ) {
       packageArguments.push(
-        `--config.electronDist=${resolve(process.env.GOODBUDDY_ELECTRON_DIST)}`
+        `--config.electronDist=${electronDist}`
       )
     }
     const packaged = await run(
@@ -153,7 +201,102 @@ async function main() {
         `Packaged DeepSeek Harness smoke failed (${executed.exitCode}, ${executed.signal ?? 'no signal'}): ${JSON.stringify(result)} ${executed.output.trim()}`
       )
     }
+
+    const npmManifest = JSON.parse(
+      await readFile(npmManifestPath, 'utf8')
+    )
+    await prepareNodeCommand(packageManagerBin)
+    await mkdir(npmProject, { recursive: true })
+    await mkdir(npmFixture, { recursive: true })
+    await writeFile(
+      join(npmProject, 'package.json'),
+      '{"name":"goodbuddy-packaged-npm-project","version":"1.0.0","private":true}\n',
+      'utf8'
+    )
+    await writeFile(
+      join(npmFixture, 'package.json'),
+      `${JSON.stringify({
+        name: 'goodbuddy-packaged-npm-smoke',
+        version: '1.0.0',
+        scripts: {
+          install: 'node install.cjs'
+        }
+      })}\n`,
+      'utf8'
+    )
+    await writeFile(
+      join(npmFixture, 'install.cjs'),
+      "require('node:fs').writeFileSync(require('node:path').join(__dirname, 'lifecycle-ran.txt'), 'ready\\n')\n",
+      'utf8'
+    )
+    const inheritedPath =
+      process.env.PATH ?? process.env.Path ?? ''
+    const npmEnvironment = {
+      ...process.env,
+      PATH: inheritedPath
+        ? `${packageManagerBin}${delimiter}${inheritedPath}`
+        : packageManagerBin,
+      Path: inheritedPath
+        ? `${packageManagerBin}${delimiter}${inheritedPath}`
+        : packageManagerBin,
+      ELECTRON_RUN_AS_NODE: '1',
+      npm_execpath: npmCli,
+      npm_node_execpath: executable,
+      npm_config_audit: 'false',
+      npm_config_fund: 'false',
+      npm_config_update_notifier: 'false'
+    }
+    const npmVersion = await run(
+      executable,
+      [npmCli, '--version'],
+      npmEnvironment,
+      npmProject
+    )
+    if (
+      npmVersion.exitCode !== 0 ||
+      npmVersion.signal ||
+      npmVersion.output.trim() !== npmManifest.version
+    ) {
+      throw new Error(
+        `Packaged npm version smoke failed: ${npmVersion.output.trim()}`
+      )
+    }
+    const installed = await run(
+      executable,
+      [
+        npmCli,
+        'install',
+        '--save-exact',
+        '--no-audit',
+        '--no-fund',
+        '--dangerously-allow-all-scripts',
+        '--loglevel=error',
+        npmFixture
+      ],
+      npmEnvironment,
+      npmProject
+    )
+    if (installed.exitCode !== 0 || installed.signal) {
+      throw new Error(
+        `Packaged npm install smoke failed: ${installed.output.trim()}`
+      )
+    }
+    const lifecycleMarker = await readFile(
+      join(
+        npmProject,
+        'node_modules',
+        'goodbuddy-packaged-npm-smoke',
+        'lifecycle-ran.txt'
+      ),
+      'utf8'
+    )
+    if (lifecycleMarker !== 'ready\n') {
+      throw new Error('Packaged npm lifecycle smoke failed')
+    }
     console.log('Packaged DeepSeek Harness utility smoke: ready')
+    console.log(
+      `Packaged npm install smoke: ready (${npmManifest.version})`
+    )
   } finally {
     await rm(root, { recursive: true, force: true })
   }