Function write_file_references_to_scratch 

pub unsafe fn write_file_references_to_scratch(
    ptr: *mut u8,
    refs: &[FileReference],
) -> Result<(), String>

Write a list of file-reference (index, path) pairs to scratch. Format: magic (u32), count (u32), then for each entry: index (u32), length (u32) followed by UTF-8 bytes.

Safety

ptr must point to a valid SHM allocation.