Module live_stream 

Live-stream pane — a compact tail of the engine’s WS push surface. Sourced from crate::app::event_ring::EventRing; rendered as one row per event in chronological order (newest at the bottom so the pane reads like a log).

Design choices:

• Self-labeling kind column so operators can scan by color and prefix without waiting for a full decode.
• HH:MM:SS timestamps only. Dates are visible in the status bar; repeating them per-row eats horizontal budget without helping.
• Honest empty state ((no engine events yet — waiting …)) when the ring is empty. A blank pane would look calm even when the subscriber is offline, which is exactly the wrong signal to send on a trading terminal.
• Broadcast-lag markers render as !! lag · dropped N events in alert color; silently losing events after a burst is a worse failure mode than a loud row.

Structs

LiveStreamPane

Functions

format_item

Format one ring item as a line of Spans. Public so tests can assert text + color without threading a fake terminal.