Agentica v0.2.2 — voice that actually works

Local voice fixed end-to-end (Silero VAD v5 + correct packaged asset paths), Whisper+Kokoro bundled. Remote SSH/Ollama now lists the box's real installed models + one-click remote download. Model picker shows installed vs not-downloaded. Remote expressive (Chatterbox) + Gemini voice settable in-app. SLURM jobs verified on Discovery. Security hardening from the v0.2.x review.

macOS arm64 + Linux x64. (Intel mac build pending a CI runner.)