API spec change broke MCP server build

[github-actions]

The monorepo pushed a spec update that caused CI failures in the MCP server compatibility job.

Workflow run: https://github.com/devhelmhq/mcp-server/actions/runs/25215887300

Likely causes:

• The latest devhelm SDK release is incompatible with how MCP tools call it
• Tool definitions reference an SDK method that was removed/renamed
• Test fixtures depend on a payload shape that changed in the spec