5d2b7a3e66
1. Alertless monitors no longer spam error logs — triggerAlert returns early when alertID <= 0. 2. HTTP response body drained before close — enables connection reuse via keep-alive instead of fresh TCP+TLS per check. 3. /api/backup/export enforces GET — was the only endpoint accepting any HTTP method. 4. limitStr guards against max < 3 — prevents negative slice index panic on very narrow terminals. 5. Filter input accepts multibyte characters — len(msg.Runes) instead of len(msg.String()) for proper Unicode support. 6. Startup warning corrected — with no UPTOP_CLUSTER_SECRET, endpoints reject (401), not accept. Warning now says so. 7. UPTOP_KEYS file open failure logged — was silently swallowed, leaving operators with no admin seeded and no message.