7-day full-access trial, then gated behind an Ed25519-signed license key
(internal/license) verified entirely offline — no phone-home dependency.
Middleware 402s non-exempt API routes once the trial lapses with no valid
key; frontend shows a countdown banner in the last 3 days and a blocking
overlay once actually gated, both pointing at the new Settings -> Лицензия
tab. tools/gen-license mints keys for the vendor side (never ships the
private key).
root