feat: auto-allow run_task tool execution

[linw1995]

Summary

Auto-allow run_task tool execution to improve agent workflow efficiency.

Changes

• Auto-allow run_task tool execution
• Improve agent workflow by reducing manual confirmation for trusted operations

[codecov-commenter]

Codecov Report

❌ Patch coverage is 75.00000% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 51.86%. Comparing base (e5977ab) to head (044fdea).
⚠️ Report is 12 commits behind head on dev.

Files with missing lines	Patch %	Lines
crates/coco-tui/src/components/messages/tool.rs	62.50%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #109      +/-   ##
==========================================
- Coverage   53.46%   51.86%   -1.61%     
==========================================
  Files          88       91       +3     
  Lines       21248    23459    +2211     
==========================================
+ Hits        11360    12166     +806     
- Misses       9888    11293    +1405     

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