Adds --verify (requires --public-key) to LicenseMinterCli. After
writing the output file the CLI parses the freshly-minted token
through LicenseValidator against the supplied public key. On
verify failure the output file is deleted (so the bad token is
not accidentally shipped) and the CLI exits 3.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Reads PEM or base64 PKCS#8 Ed25519 private key, maps --max-foo-bar
flags to max_foo_bar limit keys, parses --expires as a UTC date,
defaults --grace-days to 0. Unknown flags fail fast with exit 2.
--verify path is added in the next task.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Pure signing primitive: serialises LicenseInfo to canonical JSON
(sorted top-level keys via ORDER_MAP_ENTRIES_BY_KEYS plus a TreeMap
for the limits sub-object) then signs with Ed25519. Round-trips
through LicenseValidator and is byte-stable across runs for
identical inputs.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>