```

feat: add market stats endpoint, wallet integration, and browser wallet link

- Update devnet genesis timestamp to 1767000206
- Add market statistics endpoint with 24h volume, price change, and payment counts
- Add wallet balance and info API endpoints in exchange router
- Remove unused SessionDep dependencies from exchange endpoints
- Integrate real AITBC wallet extension connection in trade-exchange UI
- Add market data fetching with API fallback for price and volume display
- Add cache-busting query

extensions/aitbc-wallet-firefox-simple/icons/icon.svg

@@ -0,0 +1,13 @@
+<svg width="128" height="128" viewBox="0 0 128 128" xmlns="http://www.w3.org/2000/svg">
+  <defs>
+    <linearGradient id="grad" x1="0%" y1="0%" x2="100%" y2="100%">
+      <stop offset="0%" style="stop-color:#ff9500;stop-opacity:1" />
+      <stop offset="100%" style="stop-color:#ff6611;stop-opacity:1" />
+    </linearGradient>
+  </defs>
+  <rect width="128" height="128" rx="20" fill="url(#grad)"/>
+  <text x="64" y="45" font-family="Arial, sans-serif" font-size="14" font-weight="bold" fill="white" text-anchor="middle">AITBC</text>
+  <path d="M30 60 L98 60 L90 75 L38 75 Z" fill="white" opacity="0.9"/>
+  <path d="M35 80 L93 80 L85 95 L43 95 Z" fill="white" opacity="0.7"/>
+  <circle cx="64" cy="105" r="8" fill="white"/>
+</svg>