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/sleeping-gods-tides-of-ruin/index.html

@@ -20,7 +20,7 @@
 <div class="card"><div class="factrow"><b>my copy</b> English edition · 2021</div><div class="factrow"><b>publishers</b> <span class="chip">Red Raven Games</span></div><div class="factrow"><b>languages</b> <span class="chip">English</span></div></div>
 <div class="card desc">The Wandering Sea is vast, filled with hidden treasures and lost totems. To the far south lies Zokmere, the sanctuary city, where hundreds of splintered houses cling to the jungle hills in a turquoise bay. In the northeast, the gods hide the remains of a sprawling city, and the history of their malice. Ready your crew. New dangers and adventures await.
 
-Sleeping Gods: Tides of Ruin expands the world of Sleeping Gods with a second atlas, accompanying storybook, new adventure cards, enemies, events, and more. Seamlessly combine this expansion with the base game to make the world even larger.</div>
+Sleeping Gods: Tides of Ruin expands the world of Sleeping Gods with a second atlas, accompanying storybook, new adventure cards, enemies, events, and more. Seamlessly combine this expansion with the base game to make the world even larger.</div><div class="card"><div class="factrow"><b>where it lives</b> Library Kallax · D4</div></div>
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   <p>The Game Shelves · cataloged from shelf photos by