coinosv3.git/src/cordn.js, branch master

Cordn group chats: MLS groups delivered through a coordinator (Amethyst 1.17 interop)

2026-10-06T18:22:06Z

src/contextvm.js speaks ContextVM (kind 25910 inside ephemeral gift wraps) to a coordinator; src/cordn.js is the protocol (KeyPackages with hex-text identities, the 0xC04D metadata extension, exporter-keyed ChaCha20 sealing, unsigned nostr-shaped envelopes with the sender as MLS AAD, cordn1 group refs, a record engine like marmot.js); src/cordn-client.js mirrors marmot-client.js with the same interface, so the Messages group screens drive both — New group gains a White Noise / Cordn toggle. Verified against @cordn/cli (ts-mls) on the public coordinator both ways, from the engine (tools/cordn-interop-test.js) and from the real app (tools/cordn-ui-test.js). mls.js: the OpenMLS required_capabilities rule for GroupContextExtensions now applies only to groups that carry one. Co-Authored-By: Claude Fable 5.1 Claude-Session: https://claude.ai/code/session_01YRC6aKhwAud231ot9FPmhi