feat(omnivoice): wire to asset-engine via FastAPI wrapper + reuse chatterbox voices

- app.py: thin FastAPI wrapper exposing OpenAI /v1/audio/speech (+ /v1/audio/voices,
  /healthz) around OmniVoice's Python API; precomputes a voice-clone prompt per voice
  at startup (loaded Whisper auto-transcribes each reference). Replaces the Gradio demo.
- Dockerfile/compose: run the uvicorn wrapper, /healthz healthcheck, project name pinned
  to "omnivoice" so the asset-engine liveness probe matches.
- deploy-omnivoice.yaml: stage chatterbox /refs/*.wav as clone voices (skip _* artifacts)
  + verify the API surface.
- services.yaml: catalog entry (id omnivoice, :8199/v1/audio/speech, voice list sourced
  live from /v1/audio/voices) + reproducibility_audit row.

Verified live on irv-ml1: /healthz ok, 33 voices loaded, test synth -> 24kHz PCM_16 WAV.

stacks/omnivoice/compose.yaml

@@ -1,9 +1,10 @@
 # OmniVoice (k2-fsa/OmniVoice) — zero-shot, massively-multilingual (600+
 # language) voice-cloning + voice-design TTS, diffusion-LM, Apache-2.0.
-# Served via upstream's own Gradio demo. NOTE: this exposes the Gradio UI
-# + Gradio API, NOT an OpenAI-compatible /v1/audio/speech endpoint — wrap
-# it later (à la stacks/index-tts/app.py) if asset-engine integration is
-# wanted. For now it's a "stand it up and try it" UI.
+# Served behind our OWN thin FastAPI wrapper (stacks/omnivoice/app.py) exposing
+# OpenAI-compatible /v1/audio/speech (+ /v1/audio/voices, /healthz) so the
+# asset-engine can consume it. Upstream ships only a Gradio demo; the wrapper
+# replaced it (2026-06-19). Voices are reference WAVs in ${OMNIVOICE_VOICES_DIR}
+# (the reused chatterbox /refs/*.wav); clone prompts are precomputed at startup.
 #
 # Build: local image from the Dockerfile in this dir. Weights download
 # from HF (k2-fsa/OmniVoice) on first boot into ${OMNIVOICE_CACHE_DIR}.
@@ -14,6 +15,10 @@
 #
 # All tunables live in .env — edit that, not this file.
 
+# Compose project name MUST equal the catalog lifecycle.stack ("omnivoice") or the
+# asset-engine liveness probe (docker ps project-name match) shows it OFFLINE.
+name: omnivoice
+
 services:
   omnivoice:
     image: local/omnivoice:${OMNIVOICE_TAG:-latest}
@@ -34,15 +39,15 @@ services:
       - ${OMNIVOICE_CACHE_DIR}:/app/hf_cache
       - ${OMNIVOICE_VOICES_DIR}:/app/voices
     healthcheck:
-      test: ["CMD-SHELL", "wget -q -O /dev/null http://localhost:8001/ || exit 1"]
+      test: ["CMD-SHELL", "wget -q -O /dev/null http://localhost:8001/healthz || exit 1"]
       interval: 30s
       timeout: 10s
       retries: 3
-      # First boot: weight pre-warm download (entrypoint) + CUDA warmup.
-      start_period: 900s
+      # First boot: OmniVoice + Whisper ASR pre-warm + cloning every staged voice.
+      start_period: 1200s
     labels:
       - homepage.group=AI Systems
       - homepage.name=OmniVoice
       - homepage.icon=mdi-account-voice
-      - homepage.description=Zero-shot multilingual voice-cloning TTS (irv-ml1, 3090)
-      - homepage.href=http://10.100.79.3:${OMNIVOICE_PORT}
+      - homepage.description=Zero-shot multilingual voice-cloning TTS, OpenAI /v1/audio/speech (irv-ml1, 3090)
+      - homepage.href=http://10.100.79.3:${OMNIVOICE_PORT}/docs