Sigils: AI behavioral OS for real-world growth. Most apps track plans. Sigils changes what you do. Drawing from mentors, coaches, books and philosophies, Sigils interprets actions via difficulty, alignment, recovery, discipline, courage, learning and self-command. Responds as 1 of 4 philosophical mentors: Master, Chief, Moe, Cloudia, each with unique growth doctrine. Core loop: Log action → AI interprets effort/context → Mentor responds and intervenes. Anti-dopamine design. Real action only