Layer 1 Site-wide anti-spam (REV2 / Snooron)

Signals: account age (to the second) · signup email     │
│   domain · IP/ISP reputation · in-house TLS+UA            │
│   fingerprints · report count · posting cadence ·         │
│   landing-page scanning                                   │
│   → Hit = shadowban (no notice, invisible site-wide)