fix: resolve clippy warnings in cortex-engine crate

- Replace deprecated into_path() with keep() in artifacts.rs tests
- Replace manual contains check with DISALLOWED_TOOLS.contains() in batch.rs
- Move Clone impl for FileTimeTracker before test module in file_time.rs

Author: echobt

src/cortex-engine/src/security/file_time.rs

@@ -170,6 +170,15 @@ pub fn global_tracker() -> &'static FileTimeTracker {
     GLOBAL_TRACKER.get_or_init(FileTimeTracker::new)
 }
 
+impl Clone for FileTimeTracker {
+    fn clone(&self) -> Self {
+        Self {
+            records: Arc::clone(&self.records),
+            locks: Arc::clone(&self.locks),
+        }
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;
@@ -252,12 +261,3 @@ mod tests {
         h2.await.unwrap();
     }
 }
-
-impl Clone for FileTimeTracker {
-    fn clone(&self) -> Self {
-        Self {
-            records: Arc::clone(&self.records),
-            locks: Arc::clone(&self.locks),
-        }
-    }
-}

src/cortex-engine/src/tools/artifacts.rs

@@ -277,7 +277,7 @@ mod tests {
     #[test]
     fn test_no_truncation_below_threshold() {
         let config = ArtifactConfig {
-            artifacts_dir: tempdir().unwrap().into_path(),
+            artifacts_dir: tempdir().unwrap().keep(),
             truncate_threshold: 1000,
             truncate_lines: 10,
             enabled: true,
@@ -319,7 +319,7 @@ mod tests {
     #[test]
     fn test_disabled_config() {
         let config = ArtifactConfig {
-            artifacts_dir: tempdir().unwrap().into_path(),
+            artifacts_dir: tempdir().unwrap().keep(),
             truncate_threshold: 10,
             truncate_lines: 1,
             enabled: false,

src/cortex-engine/src/tools/handlers/batch.rs

@@ -491,7 +491,7 @@ mod tests {
         assert!(DISALLOWED_TOOLS.contains(&"Agent"));
         // Task is now allowed in batch for parallel task execution
         assert!(!DISALLOWED_TOOLS.contains(&"Task"));
-        assert!(!DISALLOWED_TOOLS.iter().any(|&t| t == "Read"));
+        assert!(!DISALLOWED_TOOLS.contains(&"Read"));
     }
 
     #[tokio::test]