Add requirements.txt

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

requirements.txt

@@ -0,0 +1,22 @@
+# Soci — LLM-powered city population simulator
+# Install: pip install -r requirements.txt
+
+# LLM providers
+anthropic>=0.79.0          # Claude API
+httpx>=0.28.0              # HTTP client (also used by Ollama)
+# groq>=0.11.0             # Groq API (optional — install if using Groq)
+
+# Web API
+fastapi>=0.129.0
+uvicorn[standard]>=0.40.0
+websockets>=16.0
+
+# Persistence
+aiosqlite>=0.22.0
+
+# Terminal UI
+rich>=14.0.0
+
+# Config & env
+python-dotenv>=1.2.0
+pyyaml>=6.0.0