Contrast: the accent shimmer band swept raw primary, which sits too
close to the text's lightness in both themes (58%-L purple vs
near-black text in light; 80%-L purple vs near-white text in dark) and
barely read. The band now mixes primary toward the background — lighter
in light mode, darker in dark mode, both directions pulling away from
the text — and narrows so the highlight covers more visible text per
pass.
Robustness: observer frames are ephemeral, so an app subscribing
mid-turn missed turn_started and the turns store stayed empty (dark
sidebar shimmer, no working badges) until a liveness ping happened to
land. Any frame carrying a turn context — tool calls included, which
stream constantly during work — now establishes the turn, still gated
by the terminal tombstone so completed turns stay dead.
Adds an e2e spec covering the sidebar title shimmer end to end via
seeded active turns.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
