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/wiz-war-eighth-edition/index.html

@@ -22,7 +22,7 @@
 
 Staying true to the spirit of the game that has entertained players for years, as well inspiring an entire genre of games, this 2011 edition of Wiz-War caters to the imagination and the funny bone. Casting an enriched array of spells, your wizards race through an underground maze, avoiding fireballs, werewolves, and psychic storms. Subtle game enhancements by Kevin Wilson and Tom Jolly promote faster play and clarify card effects.
 
-—description from the publisher</div>
+—description from the publisher</div><div class="card"><div class="factrow"><b>where it lives</b> Library Kallax · D1</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