sisyphus_task was only loading builtin skills via resolveMultipleSkills(). Now uses resolveMultipleSkillsAsync() which merges discoverSkills() + builtin skills. - Add getAllSkills(), extractSkillTemplate(), resolveMultipleSkillsAsync() - Update sisyphus_task to use async skill resolution - Refactor skill tool to reuse unified getAllSkills() - Add async skill resolution tests