Apply comprehensive Rust lint fixes

[octoaide]

This PR contains comprehensive Rust lint fixes applied automatically by Octoaide.

Changes

• Applied cargo clippy --fix for automatic lint corrections
• Resolved additional lint issues with iterative AI-powered fixing
• Applied cargo fmt as final formatting step

Testing

• cargo test passes locally
• cargo clippy checks pass with no warnings
• cargo fmt formatting verified
• All fixes validated before creating this PR

This PR is ready for review and can be safely merged once CI passes.

[codecov]

Codecov Report

❌ Patch coverage is 75.00000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 85.86%. Comparing base (ac189bd) to head (583aae3).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/test.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #189   +/-   ##
=======================================
  Coverage   85.86%   85.86%           
=======================================
  Files          15       15           
  Lines        6331     6331           
=======================================
  Hits         5436     5436           
  Misses        895      895           

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