feat: comprehensive project improvements and fixes

- Fix all TypeScript compilation errors (40+ fixes)
  - Add missing type definitions (TransactionRequest, SafeInfo)
  - Fix TransactionRequestStatus vs TransactionStatus confusion
  - Fix import paths and provider type issues
  - Fix test file errors and mock providers

- Implement comprehensive security features
  - AES-GCM encryption with PBKDF2 key derivation
  - Input validation and sanitization
  - Rate limiting and nonce management
  - Replay attack prevention
  - Access control and authorization

- Add comprehensive test suite
  - Integration tests for transaction flow
  - Security validation tests
  - Wallet management tests
  - Encryption and rate limiter tests
  - E2E tests with Playwright

- Add extensive documentation
  - 12 numbered guides (setup, development, API, security, etc.)
  - Security documentation and audit reports
  - Code review and testing reports
  - Project organization documentation

- Update dependencies
  - Update axios to latest version (security fix)
  - Update React types to v18
  - Fix peer dependency warnings

- Add development tooling
  - CI/CD workflows (GitHub Actions)
  - Pre-commit hooks (Husky)
  - Linting and formatting (Prettier, ESLint)
  - Security audit workflow
  - Performance benchmarking

- Reorganize project structure
  - Move reports to docs/reports/
  - Clean up root directory
  - Organize documentation

- Add new features
  - Smart wallet management (Gnosis Safe, ERC4337)
  - Transaction execution and approval workflows
  - Balance management and token support
  - Error boundary and monitoring (Sentry)

- Fix WalletConnect configuration
  - Handle missing projectId gracefully
  - Add environment variable template

components/Balance/WalletBalance.tsx

@@ -0,0 +1,115 @@
+"use client";
+
+import {
+  Box,
+  VStack,
+  HStack,
+  Text,
+  Heading,
+  Button,
+  Spinner,
+  Badge,
+  Table,
+  Thead,
+  Tr,
+  Th,
+  Tbody,
+  Td,
+} from "@chakra-ui/react";
+import { useSmartWallet } from "../../contexts/SmartWalletContext";
+import { utils } from "ethers";
+import AddToken from "./AddToken";
+
+export default function WalletBalance() {
+  const { activeWallet, balance, isLoadingBalance, refreshBalance } = useSmartWallet();
+
+  if (!activeWallet) {
+    return (
+      <Box p={4} borderWidth="1px" borderRadius="md">
+        <Text color="gray.400">No active wallet selected</Text>
+      </Box>
+    );
+  }
+
+  return (
+    <Box>
+      <HStack mb={4} justify="space-between">
+        <Heading size="md">Balance</Heading>
+        <HStack>
+          <AddToken />
+          <Button size="sm" onClick={refreshBalance} isDisabled={isLoadingBalance}>
+            {isLoadingBalance ? <Spinner size="sm" /> : "Refresh"}
+          </Button>
+        </HStack>
+      </HStack>
+
+      {isLoadingBalance ? (
+        <Box p={8} textAlign="center">
+          <Spinner size="lg" />
+        </Box>
+      ) : balance ? (
+        <VStack align="stretch" spacing={4}>
+          <Box p={4} borderWidth="1px" borderRadius="md" bg="brand.lightBlack">
+            <HStack justify="space-between">
+              <VStack align="start" spacing={1}>
+                <Text fontSize="sm" color="gray.400">
+                  Native Balance
+                </Text>
+                <Text fontSize="2xl" fontWeight="bold">
+                  {parseFloat(balance.nativeFormatted).toFixed(6)} ETH
+                </Text>
+              </VStack>
+            </HStack>
+          </Box>
+
+          {balance.tokens.length > 0 && (
+            <Box>
+              <Heading size="sm" mb={2}>
+                Tokens
+              </Heading>
+              <Table variant="simple" size="sm">
+                <Thead>
+                  <Tr>
+                    <Th>Token</Th>
+                    <Th>Balance</Th>
+                    <Th>Symbol</Th>
+                  </Tr>
+                </Thead>
+                <Tbody>
+                  {balance.tokens.map((token) => (
+                    <Tr key={token.tokenAddress}>
+                      <Td>
+                        <VStack align="start" spacing={0}>
+                          <Text fontWeight="bold">{token.name}</Text>
+                          <Text fontSize="xs" color="gray.400">
+                            {token.tokenAddress.slice(0, 10)}...
+                          </Text>
+                        </VStack>
+                      </Td>
+                      <Td>
+                        <Text>{parseFloat(token.balanceFormatted).toFixed(4)}</Text>
+                      </Td>
+                      <Td>
+                        <Badge>{token.symbol}</Badge>
+                      </Td>
+                    </Tr>
+                  ))}
+                </Tbody>
+              </Table>
+            </Box>
+          )}
+
+          {balance.tokens.length === 0 && (
+            <Box p={4} textAlign="center" color="gray.400">
+              <Text>No token balances found</Text>
+            </Box>
+          )}
+        </VStack>
+      ) : (
+        <Box p={4} textAlign="center" color="gray.400">
+          <Text>Failed to load balance</Text>
+        </Box>
+      )}
+    </Box>
+  );
+}