chore: release v0.12.5

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: mabry1985

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "protovoice"
-version = "0.12.4"
+version = "0.12.5"
 description = "Duplex voice agent on Pipecat — Whisper STT + Qwen LLM + Fish/Kokoro TTS"
 requires-python = ">=3.11"
 dependencies = [