feat: full voice pipeline — AST acoustic, accent, privacy, prosody, dimensional, trajectory, telephony, FastAPI app
New modules shipped (from Linnet integration):
- acoustic.py: AST (MIT/ast-finetuned-audioset-10-10-0.4593) replaces YAMNet stub;
527 AudioSet classes mapped to queue/speaker/environ/scene labels; _LABEL_MAP
includes hold_music, ringback, DTMF, background_shift, AMD signal chain
- accent.py: facebook/mms-lid-126 language ID → regional accent labels
(en_gb, en_us, en_au, fr, es, de, zh, …); lazy-loaded, gated by CF_VOICE_ACCENT
- privacy.py: compound privacy risk scorer — public_env, background_voices,
nature scene, accent signals; returns 0–3 score without storing any audio
- prosody.py: openSMILE-backed prosody extractor (sarcasm_risk, flat_f0_score,
speech_rate, pitch_range); mock mode returns neutral values
- dimensional.py: audeering/wav2vec2-large-robust-12-ft-emotion-msp-dim
valence/arousal/dominance scorer; gated by CF_VOICE_DIMENSIONAL
- trajectory.py: rolling buffer for arousal/valence deltas, trend detection
(escalating/suppressed/stable), coherence scoring, suppression/reframe flags
- telephony.py: TelephonyBackend Protocol + MockTelephonyBackend + SignalWireBackend
+ FreeSWITCHBackend; CallSession dataclass; make_telephony() factory
- app.py: FastAPI service (port 8007) — /health + /classify; accepts base64 PCM
chunks, returns full AudioEventOut including dimensional/prosody/accent fields
- prefs.py: voice preference helpers (elcor_mode, confidence_threshold,
whisper_model, elcor_prior_frames); cf-core and env-var fallback
Tests: fix stale tests (YAMNetAcousticBackend → ASTAcousticBackend, scene field
added to AcousticResult, speaker_at gap now resolves dominant speaker not UNKNOWN,
make_io real path returns MicVoiceIO when sounddevice installed). 78 tests passing.
Closes #2, #3.
24f04b67db