feat: Add comprehensive Jest test suite (209 tests)

- Add Jest configuration for TypeScript testing
- Add security utilities tests (44 tests)
- Add Zod validation tests (34 tests)
- Add cursor pagination tests (25 tests)
- Add query builder tests (38 tests)
- Add tools structure validation (68 tests)
- All 164 tools validated for correct structure
- Version bump to 1.3.4

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

jest.config.js

@@ -0,0 +1,31 @@
+/**
+ * Jest Configuration
+ * @author Descomplicar® | @link descomplicar.pt | @copyright 2026
+ */
+
+module.exports = {
+  preset: 'ts-jest',
+  testEnvironment: 'node',
+  roots: ['<rootDir>/src'],
+  testMatch: ['**/*.test.ts'],
+  moduleFileExtensions: ['ts', 'js', 'json'],
+  collectCoverageFrom: [
+    'src/**/*.ts',
+    '!src/**/*.d.ts',
+    '!src/index.ts',
+    '!src/index-http.ts'
+  ],
+  coverageDirectory: 'coverage',
+  coverageReporters: ['text', 'lcov', 'html'],
+  verbose: true,
+  testTimeout: 10000,
+  moduleNameMapper: {
+    '^(\\.{1,2}/.*)\\.js$': '$1'
+  },
+  transform: {
+    '^.+\\.ts$': ['ts-jest', {
+      useESM: false,
+      tsconfig: 'tsconfig.json'
+    }]
+  }
+};