docs(specs): ElevenLabs-parity roadmap + Tier-1 implementation specs (#684)
Add the implementation-ready spec set mapping OmniVoice to ElevenLabs parity
while preserving local-first:
- 00-roadmap-elevenlabs-parity.md — gap analysis, prioritized tiers, sequencing,
prior-art reconciliation, and the deliberate "won't build" list.
- 01-expressive-tts.md — engine-agnostic emotion/style intent lowered onto each
TTS engine's real mechanism (degrade-visibly) + a DB-backed pronunciation dict.
- 02-conversational-agent.md — fully-offline full-duplex voice agent (/ws/converse,
Silero-VAD barge-in on AEC-cleaned mic) composing existing streaming STT/TTS + LLM.
- 03-longform-studio-editor.md — per-segment edit/regenerate across dub/audiobook/
stories, extending the existing content-addressed cache to longform.
Reconcile prior planning docs: banner the superseded parity/studio docs pointing
here; keep distinct-scope docs untouched (classification table in 00).
Co-authored-by: mergetest <test@local>
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
