Bug fix (agreed pre-existing bug #2 of 3): /api/compare called
fetchRPKIPerPrefix(asn, prefix), never defined anywhere in the codebase --
threw ReferenceError whenever either ASN had >=1 sample prefix, caught by
the outer try/catch, returning 500. Replaced both call sites with
validateRPKIWithCache(asn, prefix), the existing single-prefix RPKI check
used everywhere else in the codebase -- its return shape ({status, ...})
is exactly what the surrounding code already expects.
Verified via node --check, eslint no-undef (only 1 known bug remains:
webhooks POST's `secret`), and smoke-test harness (28/28 match). The
compare fix itself isn't exercised by the smoke test's fixed test ASNs
(both return empty prefix samples locally), but the fix is a direct,
same-shape substitution of an already-proven function.
server.js: 1736 -> 989 lines.
