Function addSkillDirectories

src/skills/loadSkillsDir.ts:923–975

(dirs: string[])

 * @param dirs Array of skill directories to load from (should be sorted deepest first)
 */
export async function addSkillDirectories(dirs: string[]): Promise<void> {
  if (
    !isSettingSourceEnabled('projectSettings') ||
    isRestrictedToPluginOnly('skills')
  ) {
    logForDebugging(
      '[skills] Dynamic skill discovery skipped: projectSettings disabled or plugin-only policy',
    )
    return
  }
  if (dirs.length === 0) {
    return
  }

  const previousSkillNamesForLogging = new Set(dynamicSkills.keys())

  // Load skills from all directories
  const loadedSkills = await Promise.all(
    dirs.map(dir => loadSkillsFromSkillsDir(dir, 'projectSettings')),
  )

  // Process in reverse order (shallower first) so deeper paths override
  for (let i = loadedSkills.length - 1; i >= 0; i--) {
    for (const { skill } of loadedSkills[i] ?? []) {
      if (skill.type === 'prompt') {
        dynamicSkills.set(skill.name, skill)
      }
    }
  }

  const newSkillCount = loadedSkills.flat().length
  if (newSkillCount > 0) {
    const addedSkills = [...dynamicSkills.keys()].filter(
      n => !previousSkillNamesForLogging.has(n),
    )
    logForDebugging(
      `[skills] Dynamically discovered ${newSkillCount} skills from ${dirs.length} directories`,
    )
    if (addedSkills.length > 0) {
      logEvent('tengu_dynamic_skills_changed', {
        source:
          'file_operation' as AnalyticsMetadata_I_VERIFIED_THIS_IS_NOT_CODE_OR_FILEPATHS,
        previousCount: previousSkillNamesForLogging.size,
        newCount: dynamicSkills.size,
        addedCount: addedSkills.length,
        directoryCount: dirs.length,
      })
    }
  }

  // Notify listeners that skills were loaded (so they can clear caches)
  skillsLoaded.emit()
}

/**
 * Gets all dynamically discovered skills.