fix: address remaining PR review findings

src/shared/utils.h

@@ -2,6 +2,7 @@
 #define UTILS_H
 
 #include "array_list.h"
+#include <stddef.h>
 #include <stdbool.h>
 
 bool mkdir_r(const char* path);
@@ -9,7 +10,9 @@ char* str_dup(const char* string);
 char* path_cat(const char* path1, const char* path2);
 bool glob_match(const char* pattern, const char* str);
 bool delete_extras(const char* dest_root, ArrayList* manifest);
+bool delete_extras_limited(const char* dest_root, ArrayList* manifest, size_t max_delete);
 void utils_set_authorized_root(int fd, const char* canonical_path);
+void utils_set_authorized_root_fd(int fd);
 bool has_path_traversal(const char* path);
 
 #endif