The six-cell grid becomes a left-to-right flow: two source cards (Input /
Output — human inputs plus the whole session's file reads/writes, with
searches and image reads when they happen; Context Events broken down by
kind) feed the highlighted Current Session node (turns / steps / subagents
— the subtree's session count, folded from the session list alongside the
cost usage), which drains into the two effect cards (Tool Calls with the
three most-called tools and an overflow pill; Cost with the family figure
and, when a subagent subtree reports, the this-agent/subagents split).
Measured bezier ribbons — a translucent band plus a traveling dash per
element, not a conservative Sankey — connect the nodes and flip to a
top-to-bottom stack when the card narrows past the container-query fold.
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