Improve Test Coverage

[Tiberriver256]

This PR increases the code coverage to exceed the 80% threshold for all metrics. Key improvements: Fixed failing tests in the auth module by adding proper mocks for getLocationsApi, enhanced client.ts test coverage with comprehensive tests for all API methods, improved error formatting test coverage with edge case handling, fixed TypeScript errors, and enhanced server test improvements. Current coverage metrics: Statement coverage: 94.65%, Branch coverage: 83.33%, Function coverage: 97.56%, Line coverage: 94.65%.

[Copilot]

PR Overview

This PR increases test coverage across the Azure DevOps API integration by addressing failing tests and improving error handling in the authentication and client modules. Key changes include:

• Adding comprehensive tests and proper mocks for Azure DevOps API methods.
• Enhancing error formatting and validation in the authentication and API client modules.
• Updating server transport connection and documentation.

Reviewed Changes

File	Description
src/api/client.ts	Implements API client methods with improved error wrapping.
src/api/auth.ts	Adds PAT-based authentication with validation and error handling.
tests/unit/api/auth.test.ts	Introduces tests for authentication error conditions and PAT format.
tests/unit/api/client.test.ts	Enhances test coverage for all API client getters and error handling.
tests/unit/api/errors.test.ts	Verifies behavior and formatting for all custom error classes.
tests/unit/server.test.ts	Provides extensive tests for server initialization and tool handlers.
src/api/README.md	Documents module usage, authentication, and API access examples.
src/server.ts	Updates transport connection logic and related error logging.
project-management/task-management/*.md	Updates task management documentation and status tracking.

Copilot reviewed 19 out of 19 changed files in this pull request and generated no comments.

Comments suppressed due to low confidence (1)

tests/unit/server.test.ts:89

• Consider standardizing the error messages for organization URL validation. One test expects 'Invalid organization URL' while another expects 'Invalid organization URL domain'.

expect(() => new AzureDevOpsServer(invalidConfig)).toThrow('Invalid organization URL');