vision / b4b7a35cea63

add Rung 2 emitter: begin->main, I/O+failure C prelude, verb-call lowering, and Result-style failure control flow (stop->scoped return, hand it on->propagate code, give up->fatal exit); rename Rung-1 envelope verb off the now-reserved 'stop'. Full oracle green: Rung 1 bit-identical + report/handon/giveup match the C reference

dev · 1 week ago · 2026-06-22 · 209.4 KB

session: rung 2 files and errors · agent: claude-opus-4-8

parent: f06779c70bc4