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

jest.setup.js

@@ -0,0 +1,40 @@
+// Learn more: https://github.com/testing-library/jest-dom
+import '@testing-library/jest-dom'
+
+// Mock window.crypto for tests
+if (typeof window !== 'undefined' && !window.crypto) {
+  Object.defineProperty(window, 'crypto', {
+    value: {
+      getRandomValues: (arr) => {
+        for (let i = 0; i < arr.length; i++) {
+          arr[i] = Math.floor(Math.random() * 256)
+        }
+        return arr
+      },
+      subtle: {
+        importKey: () => Promise.resolve({}),
+        deriveKey: () => Promise.resolve({}),
+        encrypt: () => Promise.resolve(new ArrayBuffer(0)),
+        decrypt: () => Promise.resolve(new ArrayBuffer(0)),
+      },
+    },
+  })
+}
+
+// Mock localStorage
+const localStorageMock = {
+  getItem: jest.fn(),
+  setItem: jest.fn(),
+  removeItem: jest.fn(),
+  clear: jest.fn(),
+}
+global.localStorage = localStorageMock
+
+// Mock sessionStorage
+const sessionStorageMock = {
+  getItem: jest.fn(),
+  setItem: jest.fn(),
+  removeItem: jest.fn(),
+  clear: jest.fn(),
+}
+global.sessionStorage = sessionStorageMock