feat: Add comprehensive staking interface to PaperclipWallet

- Add staking RPC methods for validators, delegation, and rewards
- Implement complete staking UI with validator selection and delegation
- Add reward claiming functionality and validator creation interface
- Include professional staking dashboard with real-time data
- Integrate staking navigation into existing wallet interface

renderer/maingui.js

@@ -25,6 +25,9 @@ class MainGUI {
       case "transactions":
         $("#mainNavBtnTransactionsWrapper").addClass("iconSelected");
         break;
+      case "staking":
+        $("#mainNavBtnStakingWrapper").addClass("iconSelected");
+        break;
       case "markets":
         $("#mainNavBtnMarketsWrapper").addClass("iconSelected");
         break;
@@ -122,6 +125,11 @@ $("#mainNavBtnTransactions").click(function () {
   EthoTransactions.renderTransactions();
 });
 
+$("#mainNavBtnStaking").click(function () {
+  EthoMainGUI.changeAppState("staking");
+  PaperclipStaking.showStakingPage();
+});
+
 $("#mainNavBtnAddressBoook").click(function () {
   EthoMainGUI.changeAppState("addressBook");
   EthoAddressBook.renderAddressBook();