fix(mcp): client add default description avoid err

[ycjcl868]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 6 lines in your changes missing coverage. Please review.

Project coverage is 4.72%. Comparing base (e5400fc) to head (0d8deea).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
packages/agent-infra/mcp-client/src/index.ts	0.00%	6 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##            main    #239      +/-   ##
========================================
- Coverage   4.72%   4.72%   -0.01%     
========================================
  Files        252     252              
  Lines       7720    7725       +5     
  Branches    1441    1443       +2     
========================================
  Hits         365     365              
- Misses      7315    7320       +5     
  Partials      40      40              

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