Runtime Lib First

mandatory

Sub-policy de `reuse-first` para libs runtime compartilhadas (Go, JS, Python, Rust, plus libs cross-language como koder_ipc / koder_chat). Herda decision tree, protocolo pré-Write e promotion pipeline da meta; acrescenta apenas as regras categoricamente distintas de runtime libs: SemVer estrito, API stability tiers, paridade multi-linguagem, benchmarks obrigatórios, coverage ≥ 85%, wire compat client-N ↔ server-N-1.

Policy — Runtime Lib First

Sub~~policy of [`reuse~~first`](../reuse-first.kmd). Inherits the decision tree, the pre-Write protocol and the promotion pipeline. Do not redeclare them here. This file contributes *nly*the rules that are categorically distinct for runtime libraries (libraries imported and executed inside other Koder modules).

Scope

Applies to any code in:

`enginessdkgo

coverage/` and flag deltas > 5% drop.

Cross-references

Meta: policies/reuse-first.kmd.
Sibling categories: ui-framework-first.kmd, build-tooling-first.kmd, protocol-first.kmd.
Adjacent policies: releases.kmd for release pipeline; testing.kmd for test discipline; code-first.kmd for the mechanicalvsanalytical axis.