Product scope and network boundaries

DM and group messaging on desktop with cold-restart persistence authority — the production path installers target.

Universal release APK in release-assets — self-signed, not on Play Store. Installable and functional; performance improved since early v1.9 builds.

Invite lifecycle and encrypted group send/receive on operator-managed relay + coordination stacks we exercise in dev.

Events published to public Nostr-style relayscannot be erased from the network after fan-out — the same constraint every federated client inherits. Obscur can hide locally and publish delete commands; it cannot recall ciphertext already replicated on strangers' relays.

On managed workspace stacks with relays you control, Obscur implements relay-scoped removal and cooperative delete semantics that public infrastructure cannot offer. This is the operator path — VPS, homelab, or datacenter metal you trust.

Join and leave events propagate across distributed peers with relay latency — typically seconds, not instant global sync. The redesigned community system converges; expecting zero-delay roster parity on relay-backed networks is a distributed-systems mistake, not a missing feature.