Phase 2 build initial

hcfs-python/requirements-api.txt

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+# HCFS Production API Requirements
+
+# Core API Framework
+fastapi>=0.104.0
+uvicorn[standard]>=0.24.0
+pydantic>=2.5.0
+pydantic-settings>=2.1.0
+
+# Database and Storage
+sqlalchemy>=2.0.23
+alembic>=1.13.0
+
+# ML and Embeddings (already in requirements)
+sentence-transformers>=2.2.2
+scikit-learn>=1.3.0
+numpy>=1.24.0
+torch>=2.0.0
+
+# API Security and Authentication
+python-jose[cryptography]>=3.3.0
+passlib[bcrypt]>=1.7.4
+python-multipart>=0.0.6
+
+# Rate Limiting and Caching
+slowapi>=0.1.9
+redis>=5.0.0
+cachetools>=5.3.0
+
+# Monitoring and Observability
+prometheus-client>=0.19.0
+structlog>=23.2.0
+opentelemetry-api>=1.21.0
+opentelemetry-sdk>=1.21.0
+opentelemetry-instrumentation-fastapi>=0.42b0
+
+# WebSocket Support
+websockets>=12.0
+
+# HTTP Client for testing
+httpx>=0.25.0
+requests>=2.31.0
+
+# Data Validation and Serialization
+email-validator>=2.1.0
+python-dateutil>=2.8.2
+
+# Background Tasks
+celery>=5.3.0
+redis>=5.0.0
+
+# Configuration Management
+python-dotenv>=1.0.0
+pyyaml>=6.0.1
+
+# Development and Testing
+pytest>=7.4.0
+pytest-asyncio>=0.21.0
+pytest-mock>=3.12.0
+black>=23.9.0
+isort>=5.12.0
+mypy>=1.6.0
+
+# Documentation
+mkdocs>=1.5.0
+mkdocs-material>=9.4.0
+
+# Production Server
+gunicorn>=21.2.0