* refactor: replace print statements with proper logging and fix grammar
- Fix English grammar errors in existing log messages
- Add tracing imports where needed
- Improve log message clarity and consistency
- Follow project logging best practices using tracing crate
* fix: resolve clippy warnings and format code
- Fix unused import warnings by making test imports conditional with #[cfg(test)]
- Fix unused variable warning by prefixing with underscore
- Run cargo fmt to fix formatting issues
- Ensure all code passes clippy checks with -D warnings flag
* refactor: move tracing::debug import into test module
Move the tracing::debug import from file-level #[cfg(test)] into the test module itself for better code organization and consistency with other test modules
* Checkpoint before follow-up message
Co-authored-by: anzhengchao <[email protected]>
* refactor: move tracing::debug import into test module in user_agent.rs
Complete the refactoring by moving the tracing::debug import from file-level #[cfg(test)] into the test module for consistency across all test files
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Co-authored-by: Cursor Agent <[email protected]>
