refactor: reorganize project structure and improve code quality

- Move CI/CD configs to config/ci/ directory
- Reorganize scripts into categorized directories (deployment, monitoring, testing, utils)
- Consolidate documentation into docs/ directory with proper structure
- Update linting and testing configurations
- Remove obsolete test reports and performance summaries
- Add new documentation for code quality tools and contact form security
- Improve project organization and maintainability
- Fix lint-staged config to only lint JS/TS files
- Disable react/react-in-jsx-scope rule for Next.js compatibility
- Ignore scripts and test config directories in ESLint

config/ci/quality-gate.yml

@@ -0,0 +1,71 @@
+when:
+  event: [pull_request]
+  branch: [main, develop]
+
+steps:
+  install-dependencies:
+    image: node:18-alpine
+    commands:
+      - npm ci
+
+  lint:
+    image: node:18-alpine
+    commands:
+      - echo "=== Running ESLint ==="
+      - npm run lint
+      - echo "✅ ESLint check passed"
+
+  type-check:
+    image: node:18-alpine
+    commands:
+      - echo "=== Running TypeScript type check ==="
+      - npm run type-check
+      - echo "✅ TypeScript type check passed"
+
+  unit-tests:
+    image: node:18-alpine
+    commands:
+      - echo "=== Running unit tests with coverage ==="
+      - npm run test:unit -- --coverage --coverageReporters=json
+      - |
+        COVERAGE=$(cat coverage/coverage-summary.json | grep -o '"lines":{"pct":[0-9.]*' | grep -o '[0-9.]*$')
+        echo "Current coverage: $COVERAGE%"
+        if [ $(echo "$COVERAGE < 42" | bc -l) -eq 1 ]; then
+          echo "❌ Coverage $COVERAGE% is below threshold 42%"
+          exit 1
+        fi
+        echo "✅ Coverage $COVERAGE% meets threshold 42%"
+
+  e2e-tests:
+    image: node:18-alpine
+    commands:
+      - echo "=== Running E2E tests ==="
+      - npx playwright install --with-deps
+      - npm run test:e2e
+      - echo "✅ E2E tests passed"
+
+  security-check:
+    image: node:18-alpine
+    commands:
+      - echo "=== Running security audit ==="
+      - npm audit --audit-level=moderate
+      - echo "✅ Security audit passed"
+
+  performance-check:
+    image: node:18-alpine
+    commands:
+      - echo "=== Running performance checks ==="
+      - npm run audit:performance
+      - echo "✅ Performance audit passed"
+
+  quality-summary:
+    image: node:18-alpine
+    commands:
+      - echo "=== Quality Gate Summary ==="
+      - echo "✅ All quality checks passed"
+      - echo "  - ESLint: PASSED"
+      - echo "  - TypeScript: PASSED"
+      - echo "  - Unit Tests: PASSED (Coverage ≥ 42%)"
+      - echo "  - E2E Tests: PASSED"
+      - echo "  - Security: PASSED"
+      - echo "  - Performance: PASSED"