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/artistry/index.html

@@ -24,7 +24,7 @@ Should you begin with ceramics? Dabble in glass work? Create new textiles? Work
 
 Each round players will take turns using their artisans to draft material tiles in specific shapes from the market and using those tiles to craft patterns for renown. As each player crafts more patterns, they will gain new artisans or advance their existing artisans from apprentice to journeywoman to master crafter, giving them access to new shapes and better options when drafting from the market. At the end of the game, players tally their renown based on the artisans they have gained and patterns they have crafted, and the player with the most renown wins!
 
-—description from the publisher</div>
+—description from the publisher</div><div class="card"><div class="factrow"><b>where it lives</b> Library Kallax · C1</div></div><div class="card"><div class="factrow"><b>in this box</b> <a href="../artistry-delightful-doorways-mini-expansion/">Artistry: Delightful Doorways Mini Expansion</a></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