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/etherfields-kittenburg-expansion/index.html

@@ -20,7 +20,7 @@
 <div class="card"><div class="factrow"><b>my copy</b> English edition · 2022</div><div class="factrow"><b>publishers</b> <span class="chip">Awaken Realms</span></div><div class="factrow"><b>languages</b> <span class="chip">English</span></div></div>
 <div class="card desc">In this promo dream, players will have the opportunity to explore the city of Kittenburg, the cat metropolis of Etherfields. The town is tormented by internal dilemmas that players will try to resolve. The dream is divided into 2 parts, the first more detective, in which players will get to know the inhabitants of Kittenburg. The second part, more tactical, consists of solving the city&#x27;s main problems.
 
-Can be used with the Flying Cat from the KS campaign.</div>
+Can be used with the Flying Cat from the KS campaign.</div><div class="card"><div class="factrow"><b>where it lives</b> Library Right Shelving · E1</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