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Author SHA1 Message Date
268d511f79 docs: initial design baseline for VoiceCat voice/text chat
Establish the design spec in docs/ before implementation:

- README: overview, locked decisions, principles, glossary
- architecture: shared C++ core + C ABI, native UIs (Swift/C#),
  threading model, server design (SFU relay)
- protocol: TCP/TLS control plane, protobuf Envelope + message
  catalog, connection lifecycle, extensibility rules
- voice: UDP media frame format, per-channel Opus config,
  multi-stream model, two-sided noise reduction, VAD/PTT,
  jitter buffer, iOS ReplayKit screen-audio
- security: mandatory encryption (TLS 1.3 + exported-key AEAD),
  TOFU server identity, admin-provisioned accounts, anti-replay
- tech-stack: permissive-only deps (mbedTLS, libsodium, opus,
  miniaudio, webrtc-apm, ...), build tooling, no GPL/LGPL
- deployment: zero-config self-host (Docker / binary / source)
- roadmap: M0-M5 milestones, resolved decisions

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-15 20:47:09 +02:00