Who funds the deploy and receives the buffer's rent back.
Whether the deployed program's upgrade authority is a key the platform
holds for it, the *_UPGRADE_AUTHORITY key wallet-api signs with — the
§ 4.3 dialog's held by CFX.
null when nothing could be compared: an immutable program, or a chain
read that resolved no authority. False would be a claim about a key rather
than an admission that nothing was compared.
The two things a deploy needs an operator to know about the keys, answered from public addresses alone.
Both were deferred while the only source of these public keys was the signing keys the dashboard may not read (PROGRAM_DEPLOYS.md § 4.2). They come out of
b2b.backoffice_walletnow, so no key material goes anywhere near a page.