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/small-world/index.html

@@ -28,7 +28,7 @@ On each turn, you either use the multiple tiles of your chosen race (type of cre
 
 At the end of your turn, you score one point (coin) for each territory your races occupy. You may have one active race and one race in decline on the board at the same time. Your occupation total can vary depending on the special abilities of your race and the territories they occupy. After the final round, the player with the most coins wins.
 
-Clarifications: available in a pinned forum post.</div>
+Clarifications: available in a pinned forum post.</div><div class="card"><div class="factrow"><b>where it lives</b> Library Kallax · C4</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