Implement TestWork functionality for preserving working directories on failure

Co-authored-by: imjasonh <210737+imjasonh@users.noreply.github.com>

src/run/environment.rs

@@ -301,6 +301,15 @@ impl TestEnvironment {
 
         result
     }
+
+    /// Preserve the work directory by preventing TempDir cleanup
+    /// Returns the path to the preserved directory
+    pub fn preserve_work_dir(self) -> std::path::PathBuf {
+        let work_dir = self.work_dir.clone();
+        // Leak the TempDir to prevent cleanup
+        std::mem::forget(self._temp_dir);
+        work_dir
+    }
 }
 
 #[cfg(test)]