Function resolveInstallable

resolveInstallable(
    env: OracleEnv | null | undefined,
    fetcher: (url: string) => Promise<Response>,
    name: string,
    installed: Record<string, string>,
    shippedCore: string,
): Promise<OracleResult>
The installability answer: oracle first, live check second.

A STALE entry is reported and then IGNORED for the decision -- it goes live. Serving a stale verdict as authoritative is how a module gets installed against a core version nobody checked, and a wrong yes is worse than a slow answer.
Parameters
- env: OracleEnv | null | undefined
- fetcher: (url: string) => Promise<Response>
- name: string
- installed: Record<string, string>
- shippedCore: string
Returns Promise<OracleResult>
- Defined in src/ops/oracle.ts:105