pub fn gpu_include_parse(num_tokens: u32, source_len: u32) -> ProgramExpand description
Build the 17b.7 #include row parser Program.
Hybrid runtime/static-bound: kernel BODY uses Expr::buf_len() for
every per-thread bound (so program AST is constant across files),
num_tokens is kept ONLY for output buffer sizing (CUDA backend
requires static byte length for readback), source_len is unused.