Home page: a DeadAir section, with its silences shrinking (#216)

A waveform in the dial's navy frame: the talk keeps its width, each
silence lights in the needle's orange and shrinks to a short pause, and
the episode ends sooner. CSS only, as the page's CSP allows no script of
its own; with reduced motion it shows the shortened episode, still. The
player section no longer mentions DeadAir, which has its own now.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

site/build.sh

@@ -5,7 +5,7 @@ set -e
 here=$(dirname "$0")
 rm -rf "$here/dist"
 mkdir -p "$here/dist/fonts"
-cp "$here/index.html" "$here/site.css" "$here/_headers" "$here/dist/"
+cp "$here/index.html" "$here/site.css" "$here/wave.svg" "$here/_headers" "$here/dist/"
 # The reader's own typeface, the same file ipx-web serves.
 cp "$here/../web/InterVariable.woff2" "$here/dist/fonts/inter.woff2"
 cp "$here/../web/logo.svg" "$here/../web/favicon.png" "$here/dist/"