RulRul (rul-lang/rul, .rl) is a dependency-free Rust engine in which an AI agent emits a 128-bit-per-node SSA dataflow graph of f64 columnar ops, a single forward pass verifies it, three execution tiers run it, and a 991-line emitter writes a standalone Linux x86-64 ELF with no LLVM or libc. The 192 B program and 817 B ELF are real; the 5.78 ns/node and 6.38 µs headline figures did not reproduce (19.4 ns/node, 19.7 µs on Apple silicon), and the 'language' has 15 opcodes, no control flow, and a stub I/O op.