77222ff1b8
Run mode (r key on checklist cards): cursor navigates steps, space toggles done/undone, r resets all, esc saves changes to DB and exits. Persists step state — improvement over web which discards on exit. Fill mode (f key on template cards): tab/shift-tab navigates slots, type to fill values, enter resolves template and copies to clipboard with use count increment. Esc cancels without copying. Both modes are sub-states of detail view, keeping architecture simple.