Update all Polkadot.js references to Pezkuwi Wallet

- Replace Polkadot.js extension references with Pezkuwi Wallet
- Update explorer links to pezkuwichain.io/explorer
- Update install links to js.pezkuwichain.io
- Update source identifiers from polkadot-js to pezkuwi

web/src/pages/Developers.tsx

@@ -49,7 +49,7 @@ const unsub = await api.tx.balances
             <h2 className="text-2xl font-bold mb-2">Quick Start Guide</h2>
             <p className="text-gray-400 mb-4">Your first steps to building a dApp on PezkuwiChain.</p>
                           <ol className="list-decimal list-inside space-y-2">
-                            <li>Install the Polkadot.js extension.</li>
+                            <li>Install the Pezkuwi Wallet extension.</li>
                             <li>Get some testnet HEZ from the Faucet.</li>              <li>Clone a starter project from our GitHub.</li>
               <li>Start building!</li>
             </ol>

web/src/pages/Login.tsx

@@ -105,13 +105,13 @@ const Login: React.FC = () => {
       if (selectedAccount) {
         navigate('/');
       } else {
-        setError('Please select an account from your Polkadot.js extension');
+        setError('Please select an account from your Pezkuwi Wallet extension');
       }
     } catch (err) {
       if (import.meta.env.DEV) console.error('Wallet connection failed:', err);
       const errorMsg = err instanceof Error ? err.message : '';
       if (errorMsg?.includes('extension')) {
-        setError('Polkadot.js extension not found. Please install it first.');
+        setError('Pezkuwi Wallet extension not found. Please install it first.');
       } else {
         setError('Failed to connect wallet. Please try again.');
       }
@@ -366,11 +366,11 @@ const Login: React.FC = () => {
             disabled={loading}
           >
             <Wallet className="mr-2 h-4 w-4" />
-            {t('login.connectWallet', 'Connect with Polkadot.js')}
+            {t('login.connectWallet', 'Connect with Pezkuwi Wallet')}
           </Button>
 
           <p className="mt-2 text-xs text-center text-gray-500">
-            {t('login.walletHint', 'Connect your Polkadot wallet for instant access')}
+            {t('login.walletHint', 'Connect your Pezkuwi Wallet for instant access')}
           </p>
         </CardContent>
         

web/src/pages/Wiki.tsx

@@ -16,7 +16,7 @@ const Wiki: React.FC = () => {
   const popularArticles = [
     'How to become a validator',
     'PezkuwiChain tokenomics explained',
-    'Connecting to the network with Polkadot.js',
+    'Connecting to the network with Pezkuwi Wallet',
     'Understanding the governance process',
   ];