[Agents365-ai]

Summary

• Add optional MCP build.ir_output and forward it to the existing --ir-output CLI option.
• Verify exact IR contents and architecture-test results in the build round-trip test.
• Cover builds without IR output and wrong-type argument rejection before subprocess launch.
• Assert exact stdio response IDs and process success.
• Document the option and bump skill metadata to 3.4.2.

Verification

• Independent lint and Python compilation passed.
• Targeted MCP suite passed: 35 tests.
• Final CI test command passed locally: 247 tests, 4 skipped.
• Native Electron export tests were not enabled.

No new dependencies. Existing local edits and task-planning files are excluded.