Files such as address-inventory.chain138.json and runtime-env.chain138.json are reference snapshots produced during dotenv cleanup. They hold public contract addresses and RPC URLs — not private keys or API secrets.
Do not treat these as a replacement for .env where secrets are required.
When Chain 138 deployment addresses change, update canonical docs (parent repo docs/11-references/ADDRESS_MATRIX_AND_STATUS.md) and refresh these files if your tooling depends on them.
See parent repo docs/00-meta/SUBMODULE_HYGIENE.md for submodule workflow.