Function checkMcpbChanged

src/utils/plugins/mcpbHandler.ts:622–686

(
  source: string,
  pluginPath: string,
)

 * Check if an MCPB source has changed and needs re-extraction
 */
export async function checkMcpbChanged(
  source: string,
  pluginPath: string,
): Promise<boolean> {
  const fs = getFsImplementation()
  const cacheDir = getMcpbCacheDir(pluginPath)
  const metadata = await loadCacheMetadata(cacheDir, source)

  if (!metadata) {
    // No cache metadata, needs loading
    return true
  }

  // Check if extraction directory still exists
  try {
    await fs.stat(metadata.extractedPath)
  } catch (error) {
    const code = getErrnoCode(error)
    if (code === 'ENOENT') {
      logForDebugging(`MCPB extraction path missing: ${metadata.extractedPath}`)
    } else {
      logForDebugging(
        `MCPB extraction path inaccessible: ${metadata.extractedPath}: ${error}`,
        { level: 'error' },
      )
    }
    return true
  }

  // For local files, check mtime
  if (!isUrl(source)) {
    const localPath = join(pluginPath, source)
    let stats
    try {
      stats = await fs.stat(localPath)
    } catch (error) {
      const code = getErrnoCode(error)
      if (code === 'ENOENT') {
        logForDebugging(`MCPB source file missing: ${localPath}`)
      } else {
        logForDebugging(
          `MCPB source file inaccessible: ${localPath}: ${error}`,
          { level: 'error' },
        )
      }
      return true
    }

    const cachedTime = new Date(metadata.cachedAt).getTime()
    // Floor to match the ms precision of cachedAt (ISO string). Sub-ms
    // precision on mtimeMs would make a freshly-cached file appear "newer"
    // than its own cache timestamp when both happen in the same millisecond.
    const fileTime = Math.floor(stats.mtimeMs)

    if (fileTime > cachedTime) {
      logForDebugging(
        `MCPB file modified: ${new Date(fileTime)} > ${new Date(cachedTime)}`,
      )