feat: implement Contec patient monitor discovery tool and server framework

Dockerfile

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+FROM python:3.12-slim
+
+WORKDIR /app
+
+# Install dependencies
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy application code
+COPY . .
+
+# Render sets PORT env var (default 10000)
+EXPOSE 10000
+
+CMD uvicorn main:app --host 0.0.0.0 --port ${PORT:-10000}