Function getNestedMemoryAttachmentsForFile

src/utils/attachments.ts:1792–1862

* Loads nested memory files for a given file path and returns them as attachments. * This function performs directory traversal to find CLAUDE.md files and conditional rules * that apply to the target file path. * * Processing order (must be preserved): * 1. Managed/User conditional rules match

(
  filePath: string,
  toolUseContext: ToolUseContext,
  appState: { toolPermissionContext: ToolPermissionContext },
)

 * @returns Array of nested memory attachments
 */
async function getNestedMemoryAttachmentsForFile(
  filePath: string,
  toolUseContext: ToolUseContext,
  appState: { toolPermissionContext: ToolPermissionContext },
): Promise<Attachment[]> {
  const attachments: Attachment[] = []

  try {
    // Early return if path is not in allowed working path
    if (!pathInAllowedWorkingPath(filePath, appState.toolPermissionContext)) {
      return attachments
    }

    const processedPaths = new Set<string>()
    const originalCwd = getOriginalCwd()

    // Phase 1: Process Managed and User conditional rules
    const managedUserRules = await getManagedAndUserConditionalRules(
      filePath,
      processedPaths,
    )
    attachments.push(
      ...memoryFilesToAttachments(managedUserRules, toolUseContext, filePath),
    )

    // Phase 2: Get directories to process
    const { nestedDirs, cwdLevelDirs } = getDirectoriesToProcess(
      filePath,
      originalCwd,
    )

    const skipProjectLevel = getFeatureValue_CACHED_MAY_BE_STALE(
      'tengu_paper_halyard',
      false,
    )

    // Phase 3: Process nested directories (CWD → target)
    // Each directory gets: CLAUDE.md + unconditional rules + conditional rules
    for (const dir of nestedDirs) {
      const memoryFiles = (
        await getMemoryFilesForNestedDirectory(dir, filePath, processedPaths)
      ).filter(
        f => !skipProjectLevel || (f.type !== 'Project' && f.type !== 'Local'),
      )
      attachments.push(
        ...memoryFilesToAttachments(memoryFiles, toolUseContext, filePath),
      )
    }

    // Phase 4: Process CWD-level directories (root → CWD)
    // Only conditional rules (unconditional rules are already loaded eagerly)
    for (const dir of cwdLevelDirs) {
      const conditionalRules = (
        await getConditionalRulesForCwdLevelDirectory(
          dir,
          filePath,
          processedPaths,
        )