Add shelves page to game library; refresh bggpipe export

Port the export's physical shelf layout (.wall/.orow/.ocell) into the
scoped embed.css so /mygames/?g=shelves renders the wall in true
proportions, using the cream board color and accent-purple links for
legibility on the dark theme. Includes a fresh bggpipe re-export (new
Etherfields and Red Dragon Inn titles, updated art). embed.js/embed.css
are untouched by the export.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

static/games/botany-perilous-perfumes/index.html

@@ -20,7 +20,7 @@
 <div class="card"><div class="factrow"><b>my copy</b> English edition · 2024</div><div class="factrow"><b>publishers</b> <span class="chip">Dux Somnium Games</span></div><div class="factrow"><b>languages</b> <span class="chip">English</span></div></div>
 <div class="card desc">Poisonous, Carnivorous, Parasitic, and Bizarre Plants! Even more opportunities for sabotage and new plants to collect that have developed unique survival abilities.
 
-—description from the publisher</div>
+—description from the publisher</div><div class="card"><div class="factrow"><b>where it lives</b> Library Kallax · C1</div></div><div class="card"><div class="factrow"><b>where it lives</b> inside <a href="../botany/">Botany</a></div></div>
 <footer>
   <p><a class="pbb" href="https://boardgamegeek.com" rel="noopener"><img src="../art/powered-by-bgg.png" alt="Powered by BGG" height="40"></a></p>
   <p>The Game Shelves · cataloged from shelf photos by