Fix additional clippy warnings

- tests/claude_tests.rs: Remove unnecessary reference in comparison
- tests/qwen_tests.rs: Replace collect+is_empty with any() for cleaner code

Both fixes address clippy warnings that are treated as errors with -Dwarnings.

Co-Authored-By: Claude Opus 4.5 <[email protected]>

Author: konard

rust/tests/claude_tests.rs

@@ -67,7 +67,7 @@ fn test_build_args_uses_stream_json_format() {
     assert!(args.contains(&"stream-json".to_string()));
     assert!(!args
         .iter()
-        .filter(|a| *a != &"stream-json")
+        .filter(|a| *a != "stream-json")
         .any(|a| a == "json"));
 }
 

rust/tests/qwen_tests.rs

@@ -108,13 +108,7 @@ fn test_build_args_with_include_directories() {
         ..QwenBuildOptions::new()
     };
     let args = build_args(&options);
-    let dir_indices: Vec<usize> = args
-        .iter()
-        .enumerate()
-        .filter(|(_, a)| *a == "--include-directories")
-        .map(|(i, _)| i)
-        .collect();
-    assert!(!dir_indices.is_empty());
+    assert!(args.iter().any(|a| a == "--include-directories"));
     assert!(args.contains(&"src".to_string()));
     assert!(args.contains(&"lib".to_string()));
 }