Replace prints with logs and fix grammar (#437)

* 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 <anzhengchao@gmail.com>

* 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

---------

Co-authored-by: Cursor Agent <cursoragent@cursor.com>

crates/utils/src/path.rs

@@ -279,9 +279,9 @@ mod tests {
     #[test]
     fn test_base_dir_from_prefix() {
         let a = "da/";
-        println!("---- in {a}");
-        let a = base_dir_from_prefix(a);
-        println!("---- out {a}");
+        // Test base_dir_from_prefix function
+        let result = base_dir_from_prefix(a);
+        assert!(!result.is_empty());
     }
 
     #[test]