Yesterday Is Set in Stone
Captain Vega has seven minutes to brief the SS Hyperion crew before the launch window closes. The schedule needs to speak for itself.
The crisis
The crew is gathered at 0700. Vega needs to point at one chart and say: everything left of this line is locked, everything right is still negotiable. If they don't see it instantly, ten minutes evaporate to questions and the briefing window slams shut.
loading framework (core, app)
The save
The chart loads. Past tasks render concrete and opaque. Future tasks render ghosty and dashed. The today line splits the canvas. Vega just points.
The outcome
The crew nods once. The briefing finishes in seven minutes. The Hyperion is on schedule.