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/castle-panic-the-dark-titan/index.html

@@ -22,7 +22,7 @@
 
 The Dark Titan, an expansion for Castle Panic, adds more powerful enemies to the game, as well as new reinforcements and weapons with which the players can defend the castle. The Dark Titan Agranok is a new 8-point monster seeking vengeance, and his support includes the Dark Sorceress, elite monsters, and a boom troll. To defend against these new threats, players will have a Cavalier that fights for them on the board as well as boiling oil and support tokens.
 
-The Dark Titan is compatible with The Wizard’s Tower, the first expansion for Castle Panic, for even more of a challenge.</div>
+The Dark Titan is compatible with The Wizard’s Tower, the first expansion for Castle Panic, for even more of a challenge.</div><div class="card"><div class="factrow"><b>where it lives</b> Library Kallax · C1</div></div>
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   <p>The Game Shelves · cataloged from shelf photos by