fix: suppress API/INIT and REGISTRY warnings in production

Added warning suppression at main.tsx entry point to catch
Polkadot.js warnings before any API imports load.

web/src/main.tsx

@@ -1,3 +1,24 @@
+// Suppress noisy Polkadot.js API warnings in production
+// Must be at the very top before any imports
+if (typeof window !== 'undefined' && import.meta.env.PROD) {
+  const originalWarn = console.warn;
+  const suppressedPatterns = [
+    'RPC methods not decorated',
+    'Unknown signed extensions',
+    'API/INIT:',
+    'REGISTRY:',
+    'StorageWeightReclaim',
+  ];
+
+  console.warn = (...args: unknown[]) => {
+    const msg = String(args[0] || '');
+    if (suppressedPatterns.some(pattern => msg.includes(pattern))) {
+      return;
+    }
+    originalWarn.apply(console, args);
+  };
+}
+
 import { createRoot } from 'react-dom/client'
 import App from './App.tsx'
 import './index.css'