Neuron
fe820928b0
El SDK CI - dev / build-and-test (pull_request) Failing after 10m55s
lang/AGENTS.md:71-77 gives four steps for adding a C builtin and ends at 'confirm the self-host fixpoint is byte-identical'. No step asks for a test. The only 'verify' in the file is that fixpoint, which proves the COMPILER REPRODUCES ITSELF and says nothing about whether the builtin works — so the recipe reads as complete while having checked nothing about the thing just added. Measured on 2026-08-16: engram_node_set_emb, engram_curiosity_json and dream_set_handler were all added in a single session with zero tests, by an agent following this recipe. Separately a UTF-8 fix was written and tested and THE TEST PASSED ON THE UNPATCHED BUILD — the real defect was elsewhere, and only building the pre-fix binary exposed it. Without a negative control that fix would have merged as verified. Adds step 5 with the two failure shapes actually encountered: a test that never exercises the change (a route default bypassed the code under test), and an induction that loses a race (curl --max-time left BOTH builds alive; only SO_LINGER 0, a real RST, reproduced it). Plus the port-binding check, because a stale instance answering has silently produced false results here more than once and pkill -f does not reliably match argv './engram'. Documentation only. Does not touch the (a) split-the-C / (b) close-the- compiler-gap question, which is a separate decision.