The static trigger peeked at the front of StreamManager's segment buffer,
which continuous scrolling (the default) never advances -- it extends the
strip with take_next_group() -- so the same first segment was examined on
every frame. A STATIC plugin paused the scroll only if it was first, once,
at startup; otherwise it scrolled past as ordinary content. Swap mode had
the same problem for any STATIC plugin not first in its cycle.
The render pipeline now records a marker (strip column, plugin id) for
each STATIC plugin where the strip is built -- composition and every
extension -- shifts the markers when the scrolled prefix is trimmed, and
clears them on reset. The coordinator pauses when the scroll reaches the
next marker: a tuple comparison per frame instead of a lock, a plugin
lookup and a get_vegas_display_mode() call. take_next_group() no longer
renders STATIC plugins' content. The pause calls display() under the
plugin lock and is timed with the monotonic clock.
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
