OptionaldynamicOptionalenvPublic per‑environment variables (string‑only).
OptionalpluginsPer‑plugin configuration slices keyed by realized mount path (for example, "aws/whoami").
OptionalrequiredKeys required to be present in the final composed environment. Validation occurs after overlays and dynamics.
OptionalrootHelp-time/runtime root defaults applied by the host (collapsed families; CLI‑like).
OptionalrootHelp-time visibility for root flags; when a key is false the corresponding option(s) are hidden in root help output.
OptionalschemaOptional validation schema (e.g., Zod). When present and it exposes
safeParse(finalEnv), the host executes it once after overlays.
OptionalscriptsMerged scripts table for resolving commands and shell behavior.
Entries may be strings or objects with cmd and optional shell.
OptionalvarsPublic global variables (string‑only).
Dynamic variable definitions (JS/TS configs only).