Add a typecheck and coverage-threshold gate job to .github/workflows/ci.yml beyond the current smoke check

[Jagadeeshftw]

Description

.github/workflows/ci.yml currently runs a single step that echoes "CI temporarily scoped to smoke check while build/test failures are triaged" and nothing else — no tsc, no vitest, no coverage check runs on pull requests today. Add a dedicated job that runs tsc --noEmit for type-checking and vitest run --coverage with an enforced minimum coverage threshold, so a PR that breaks the type-check or drops coverage fails visibly instead of silently merging.

Requirements and context

• Add a typecheck job step running pnpm exec tsc --noEmit (or pnpm build if that is preferred as the type-check signal) against tsconfig.json
• Add a coverage job step running pnpm test:coverage and configure vitest.config.ts coverage thresholds (lines/branches/functions) so the job fails the build when coverage regresses below the threshold
• Keep the existing smoke-check step or clearly document why it is superseded, and note in the PR description what currently-failing build/test issues (if any) needed to be fixed to turn this on
• Must be secure, tested, and documented
• Should be efficient and easy to review

Suggested execution

Fork the repo and create a branch

git checkout -b feature/ci-typecheck-coverage-gate

Implement changes

• Update/Write: .github/workflows/ci.yml
• Update/Write: vitest.config.ts
• Add/Update tests: src/index.test.ts
• Add documentation: README.md
• Include clear code comments and TS types
• Validate security assumptions

Test and commit

• Run tests: pnpm test
• Cover edge cases
• Include test output and security notes

Example commit message

feat: add typecheck and coverage gate to CI

Guidelines

• Minimum 95 percent test coverage
• Clear documentation
• Timeframe: 96 hours

[arisu6804]

Shall i work on this