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Lock-in cards and Lock in all.
When Kata has something worth saving, it hands you a card. In manual mode nothing is saved until you lock it in; in auto mode Kata saves what you tell it, and every entry can be undone.
What a card is
A lock-in card is a proposal: a clear label, a one-line reason, and a Lock in button. In manual mode nothing is written until you tap it; in auto mode the card arrives already saved, with its undo. Cards cover every kind of entry Kata keeps: food, weight, water, workouts, activities, supplements, equipment, goals, a personal tracker, a memory, a profile change, a mood, a concern, a reminder, a phase switch or a physique shot. A card for a past day says which day it is for.
One tap to save, one tap to undo
Tap Lock in and the entry lands where it belongs, with a small confirmation. Change your mind and the same card offers Unsave: it removes exactly what it added and nothing else, restoring the previous value if there was one. There is no way to lose data by accident here.
Lock in all
When a single message produces several cards (a full meal, a workout and a weigh-in at once), a Lock in all control saves the whole batch in one tap. Each entry still records its own undo, so "all at once" never means "all or nothing".
Manual and auto mode
By default Kata is in auto mode: it saves what you tell it directly, each card marked Saved automatically, and Unsave takes it back. Prefer to confirm everything yourself? Switch to manual mode in Settings, General, or in the Kata log, and nothing is saved until you lock it in. In both modes a phase switch, a plan, lab values and a new concern wait for your tap, and so does anything from a message that carried a photo, a file, a web search or a long paste. Every save appears in the Kata log.
The Kata log
Every lock-in, manual or automatic, is written to the Kata log with its category, summary and the moment it happened. It is your audit trail: open it from the chat header any time to review, correct or reverse a decision. See The Kata chat.