feat: add retry mechanism for combo reply tool calls

[linw1995]

No description provided.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 38.13038% with 503 lines in your changes missing coverage. Please review.
✅ Project coverage is 52.93%. Comparing base (e5977ab) to head (b5c0fa6).
⚠️ Report is 4 commits behind head on dev.

Files with missing lines	Patch %	Lines
crates/coco-tui/src/components/chat.rs	19.00%	179 Missing ⚠️
src/agent.rs	0.00%	173 Missing ⚠️
src/combo/starter.rs	69.68%	114 Missing ⚠️
src/agent/bash_executor.rs	0.00%	20 Missing ⚠️
src/cmd/prompt.rs	0.00%	17 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #101      +/-   ##
==========================================
- Coverage   53.46%   52.93%   -0.53%     
==========================================
  Files          88       89       +1     
  Lines       21248    22095     +847     
==========================================
+ Hits        11360    11696     +336     
- Misses       9888    10399     +511     

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