ci pipeline configuration pipeline implemented

[MoscowDev]

CI Pipeline Implementation Summary

Implemented a comprehensive Azure DevOps CI pipeline (azure-pipelines.yml) to enforce code quality and build stability for all backend API Pull Requests.

Completed Work

• Designed and configured a multi-stage pipeline consisting of:

  • Lint Stage – Executes ESLint and Prettier checks to enforce coding standards and formatting consistency.
  • Test Stage – Runs the full Jest test suite and generates code coverage reports.
  • Build Stage – Builds the backend application to verify successful compilation and deployment readiness.

• Integrated automated quality gates to ensure:

  • Pull Requests are blocked if any linting, testing, or build step fails.
  • The pipeline fails when overall test coverage falls below the required 80% threshold.

• Configured dependency caching for npm/yarn packages to reduce installation times and optimize pipeline execution speed across subsequent runs.

• Added Node.js toolchain configuration to standardize the runtime version across all build agents, ensuring consistent build and test results.

Outcome

The CI pipeline now automatically validates every Pull Request, providing a reliable quality assurance process that prevents code regressions, enforces coding standards, and guarantees build integrity before changes are merged into the main branch.
closes #174

[AlAfiz]

@MoscowDev Please check back and fix the CI build and test pipeline