feat(P01-01-01): create repo skeleton for v0.1 minimal voice loop

server/, client/, scenarios/, db/, scripts/, tests/, docs/ dirs match
PERSONAS.md territory. pyproject.toml declares pipecat-ai[deepgram,cartesia,piper,webrtc]
+ openai + pydantic + pyyaml + aiosqlite + httpx + websockets. .env.example
documents DEEPGRAM_API_KEY, CARTESIA_API_KEY, OLLAMA_API_KEY and the TTS
selection (PRAXIS_TTS=cartesia|piper). Verified: python -c 'import pipecat'
succeeds (pipecat-ai 1.6.0 installed).

---ci---
phase: 1
milestone: v0.1
plan: 01
task: 01-01
status: execute
persona: lead-developer
requirements:
  covered: [REQ-ORCH-01]
---/ci---

.gitignore

@@ -1,3 +1,39 @@
+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.egg-info/
+.eggs/
+build/
+dist/
+.venv/
+venv/
 .env
 .env.secrets
-.env.*
+.env.*
+
+# SQLite
+*.db
+*.db-journal
+*.db-wal
+*.db-shm
+
+# Node / client
+client/node_modules/
+client/dist/
+client/.vite/
+
+# Pytest / coverage
+.pytest_cache/
+.coverage
+htmlcov/
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Piper voice models (pre-staged locally, not committed)
+*.onnx
+*.pt
+*.bin
+piper_models/