Generated programs now have control-flow emission, text and fault output, a
free-list heap, class descriptors, and object construction/deletion. Each
story lands with an x128 fixture and verifier so the runtime stays proven
before the parser drives code generation.

🤖 Generated with Codebuff
Co-Authored-By: Codebuff <noreply@codebuff.com>

Emit bounded documented instructions for scalar assignments, word and integer
arithmetic, comparisons, and short-circuit booleans, with checked forward
branch fixups. Add multiply and signed/unsigned divide helpers with a stable
divide-by-zero result, plus a reviewed golden byte stream and disassembly.

Generated with Codebuff 🤖
Co-Authored-By: Codebuff <noreply@codebuff.com>