Function file_rename 

pub fn file_rename(
    src: &Path,
    dst: &Path,
    force: bool,
    mode: ApplyMode,
    guard: Option<&PathGuard>,
) -> Result<EditResult>

Rename (move) a file, real directory, symlink, FIFO, socket, or device node (#2091, #2538).

Files and real directories can be renamed. Destination exists without --force is already_exists. Symlinks (including dangling and symlink-to-dir) are moved as directory entries without following the target. Soft-loading symlink text and rewriting would mutate the target via atomic_write; special nodes use an empty path-only snapshot so write policies never rewrite the link target. Regular-file content is soft-loaded for preview/diff; binary / invalid UTF-8 still path-rename (#2031).

Guard: both src and dst use entry containment (PathGuard::check_path_entry) so a link whose target is outside the workspace can still be renamed when the entry paths stay inside (#2115).