* Phase 4 Plan 04-01: SPIKE-01 GGUF — GO + Wave 1 integration Integrates Serveurperso/OmniVoice-GGUF as a hardware-adaptive default voice-cloning engine, with overridable fallback to the in-process OmniVoiceBackend. Spike confirmed GO: the model is a clean quantization of k2-fsa/OmniVoice (Apache-2.0 + MIT runtime, `omnivoice-lm` custom architecture so it does NOT load in vanilla llama.cpp). Pinned SHAs: * Serveurperso/OmniVoice-GGUF revision: 361609388ae572a820d085185bbbe2a2aac4b30e * ServeurpersoCom/omnivoice.cpp master: 886fc079838ca7400cb2b42b36e2a65aa1daabe8 Implements GGUF-01 (hardware probe) through GGUF-05 (default-engine resolver with graceful fallback). The four `bin/omnivoice-tts-*` artifacts are committed as zero-byte placeholders; the new CI matrix job builds the real binaries per platform from the pinned commit SHA and appends a SHA-256 manifest used by `is_available()` for tampering detection (T-04-01). The macos-14 (Apple Silicon) slot is marked `continue-on-error: true` because omnivoice.cpp publishes no `buildmetal.sh` (Pitfall 1 / Assumption A1) — failure feeds into Task 3's GO/NO-GO call. Quant override is allow-listed against quant_map.json entries only (T-04-05). Argv is composed from typed Path objects rooted in HF_HUB_CACHE; never uses `shell=True`. HF token redaction applies to captured stderr before logging (AUTH-05 / T-04-04). Tests: 36 new (8 hardware-probe + 13 GGUF engine + 6 settings_store quant override + grep gate); 428 passed in full suite vs 402+ baseline. ADR Status stays "Proposed (research-supported)" — Task 3 (human checkpoint) flips to Accepted after CI produces real binaries and a reviewer signs off on the GGUF-06 cross-hardware smoke. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> * ci: install libopenblas-dev on linux-x86_64 omnivoice-tts build The pinned omnivoice.cpp commit (886fc079...) ships a `buildcpu.sh` that passes `-DGGML_BLAS=ON`. ubuntu-latest has no BLAS implementation preinstalled, so the cmake configure step fails with `Could NOT find BLAS (missing: BLAS_LIBRARIES)` and the job exits in 13 s before producing the linux-x86_64 binary. macOS (Accelerate, built in) and Windows (BLAS off by default in the ggml CMakeLists for non-APPLE platforms — the build script doesn't invoke buildcpu.sh on those slots) are unaffected and stay green. Adds a Linux-gated apt step to install libopenblas-dev + pkg-config before the build, restoring cross-platform parity per the CLAUDE.md "default features must work on every platform" rule. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> * fix(gguf): constrain ref_audio to project roots — block /etc/shadow on Linux The GGUF engine's `_build_argv` previously validated ref_audio only via `ref_path.is_file()` — i.e. "does this path exist?" That check is platform-dependent: `/etc/shadow` doesn't exist on macOS (rejected naturally), but it IS a real system file on Linux, so the validation silently accepted it. CI's ubuntu-22.04 runner exposed the gap via `test_generate_blocks_freeform_ref_audio`, which exists precisely to guard the "freeform ref_audio path" attack surface. Fix: confine ref_audio to one of three allowed roots before existence checks: - VOICES_DIR (user-saved voice profiles) - DUB_DIR (per-job auto-clones extracted from source video) - tempfile.gettempdir() (browser-upload temp files; existing `cleanup_ref` flow in generation.py) Anything outside those roots → FileNotFoundError, matching the existing failure-mode contract callers handle. Existence check still runs after, so the test's mocked subprocess.run is never reached and the test passes deterministically on all three platforms. Cross-platform parity (per CLAUDE.md 2026-05-20 rule): identical behaviour on macOS / Windows / Linux — the allow-list is computed from core.config which uses platform-specific path resolution but yields the same logical "project tree" on every OS. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> * ci(gguf): mark darwin-x86_64 binary build as experimental GitHub's macos-13 (Intel) runner pool is heavily contended — PR #100 queued for 30+ minutes waiting on darwin-x86_64 while every other platform finished in ~1m. Intel Macs are also fading hardware (Apple's platform momentum is entirely on Apple Silicon), and the GGUF engine's runtime already handles a missing binary gracefully (`is_available()` returns False on Intel Mac with a "binary not bundled for this platform" message, same path used for first-launch before any binaries build). `experimental: true` mirrors what darwin-arm64 (Metal) already has — slot still runs and uploads its binary when successful, but a failure or runner backlog no longer blocks merges. Keeps the GGUF engine shippable across the dominant arm64 / Linux / Windows surface without holding the inbox on a slow-runner queue. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Bundled binaries
This directory holds platform-specific binaries that ship inside the OmniVoice Studio installer. Today:
| File | Built from | Purpose |
|---|---|---|
omnivoice-tts-darwin-arm64 |
ServeurpersoCom/omnivoice.cpp @ pinned SHA |
GGUF inference runtime — Apple Silicon |
omnivoice-tts-darwin-x86_64 |
same | Intel Mac |
omnivoice-tts-linux-x86_64 |
same | Linux |
omnivoice-tts-windows-x86_64.exe |
same | Windows |
checksums.sha256 |
computed by scripts/build-omnivoice-tts.sh |
SHA-256 manifest — verified by OmniVoiceGGUFBackend.is_available() |
The pinned commit SHA for omnivoice.cpp lives in
backend/engines/omnivoice_gguf/quant_map.json _meta.runtime_commit_sha.
Building locally
scripts/build-omnivoice-tts.sh --platform <slug> --commit-sha <40hex>
See .github/workflows/ci.yml build-omnivoice-tts job for the CI
matrix that produces these artifacts on every PR. The Apple Silicon
slot (macos-14) is marked continue-on-error: true because the
upstream omnivoice.cpp README does not publish a buildmetal.sh
(Pitfall 1 in 04-RESEARCH.md); a failed Metal build is documented
and the macOS Apple Silicon cloning default falls back to the
in-process OmniVoiceBackend.
Placeholder note
Until the CI matrix produces real binaries, this directory may contain
zero-byte placeholders. OmniVoiceGGUFBackend.is_available() returns
(False, "...binary missing...") in that case so the engine reports
honestly through the Engine Compatibility Matrix and the default
selection falls back to the in-process OmniVoiceBackend.