Maintains a habits.csv log — records daily check-ins, computes streaks with python3, and reads out weekly patterns with compassionate, guilt-free framing. Use when the user says "log my habits", "did my workout", "check in", "how's my streak", "habit report", or wants to start tracking a routine. Don't use for one-off task management or the weekly work review — use weekly-review — or for decision logging — use decision-journal.
