📝 Description

The zk/sdk/ package needs a Jest setup so tests can run in CI. Currently there is no test runner configured for the SDK layer.

✅ Requirements

• Add jest.config.ts to zk/sdk/
• Add "test": "jest" script to zk/sdk/package.json
• Add a new GitHub Actions workflow .github/workflows/sdk_tests.yml that:
  • Runs on push to main and on PRs
  • Installs deps in zk/sdk/
  • Runs npm test
• Add a smoke test src/__tests__/smoke.test.ts that imports the index

🎯 Acceptance Criteria

• npm test in zk/sdk/ runs without error
• CI workflow sdk_tests.yml appears in GitHub Actions
• Smoke test passes

📁 Expected files to change/create

• zk/sdk/jest.config.ts
• zk/sdk/package.json (scripts)
• .github/workflows/sdk_tests.yml
• zk/sdk/src/__tests__/smoke.test.ts

💬 Commit: chore(sdk): add Jest configuration and CI workflow for SDK unit tests
🌿 Branch: chore/sdk-jest-ci | Priority: MEDIUM | Difficulty: ☕ one-coffee

Type: Chore · Priority: MEDIUM · Difficulty: easy · Track: SDK