Implement work item creation tool and update capability matrix

[gadeynebram]

This pull request adds support for creating new work items in Azure DevOps via the .NET MCP server, filling a key functional gap. The implementation follows established patterns for tool definition, error handling, and service layering, and includes comprehensive test coverage and documentation. The new tool method allows clients to specify the collection, project, work item type, title, and an optional description, returning the created work item's ID, type, title, and URL in a JSON response.

New Work Item Creation Capability:

• Added a new MCP tool method wit_work_item_write_create in WorkItemTools to create work items with specified type, title, and optional description, returning a structured JSON result.
• Updated the capabilities matrix to reflect the new work item creation capability and its implementation status.

Service and API Layer Enhancements:

• Extended the IWorkItemContextService interface and its implementations to include CreateWorkItemAsync, which creates a new work item using Azure DevOps APIs and returns a CreateWorkItemResult. [1] [2] [3]
• Integrated the new service method into the infrastructure layer with proper validation, error handling, and field mapping.

Testing and Validation:

• Added and updated integration tests to cover successful creation, creation with description, and error scenarios for the new tool method, using fake and throwing service implementations. [1] [2] [3] [4]

Documentation and Specification:

• Added OpenSpec design and proposal documents outlining the context, goals, design decisions, risks, and migration plan for the new capability. [1] [2] [3]

These changes enable programmatic work item creation in Azure DevOps Server environments, consistent with existing tool patterns and contracts.

[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

Scanned Files

None