bigmerge
1010185978
El SDK CI - dev / build-and-test (pull_request) Successful in 6m33s
Adds engram_assert_json — a grounded "assertion envelope" primitive for a realizer/op_assert seam (per backlog bl-53/#57) — plus purview-scoped mutation wrappers engram_node_full_in/engram_connect_in, which refuse non-default purviews rather than silently mutating the live store. Threads through el_seed.c/h wrappers and the codegen.el arity table per the project's existing C-builtin recipe. Also rewrites lang/AGENTS.md build docs with verified (2026-08-15) findings that el_seed.c does not compile standalone.