Add .NET Migration Assistant Tools

[jongalloway]

Description

Help users migrate from .NET Framework to modern .NET with automated analysis and guidance.

Motivation

Many teams still need to migrate:

• .NET Framework → .NET 9+
• Older .NET versions → Latest
• Detect breaking changes
• API compatibility checking

Proposed Tools

New MCP Tools

• dotnet_migration_analyze

  • Analyze .NET Framework projects
  • Identify blocking issues
  • Estimate effort

• dotnet_migration_suggest

  • Suggest migration path
  • Breaking changes list
  • Modern alternatives for deprecated APIs

• dotnet_migration_validate

  • Check API compatibility
  • Framework feature availability
  • Third-party package compatibility

Implementation Notes

• Use .NET Upgrade Assistant APIs
• Analyze code with Roslyn
• Check API compatibility
• Provide actionable guidance

Success Criteria

• Migration analysis
• Breaking change detection
• Alternative suggestions
• Compatibility checking
• Tests
• Documentation

Related

• Part of: Phase 3 roadmap
• Experimental feature
• May leverage existing tools