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/starforce-alpha-centauri-interstellar-conflict-in-the-25th-century/index.html

@@ -29,7 +29,7 @@ Battles take place when units are in the same three-dimensional location.  In th
 Combat outcomes result in pieces not being destroyed but being "randomised"; usually to a location far from all the action.
 
 
-Part of the StarForce Trilogy box set, along with Outreach and StarSoldier. There are also special rules to use Starsoldier as a tactical game for StarForce.</div>
+Part of the StarForce Trilogy box set, along with Outreach and StarSoldier. There are also special rules to use Starsoldier as a tactical game for StarForce.</div><div class="card"><div class="factrow"><b>where it lives</b> Library Kallax · D2</div></div>
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   <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