Add subspace-tv FastAPI service with Unraid deployment

Includes FastAPI application with device authentication, Docker configuration,
Bruno API tests, and git-based deployment scripts for Unraid.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Dockerfile

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+# Use official Python runtime as base image
+FROM python:3.11-slim
+
+# Set working directory in container
+WORKDIR /app
+
+# Set environment variables
+ENV PYTHONUNBUFFERED=1 \
+    PYTHONDONTWRITEBYTECODE=1
+
+# Install dependencies
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy application code
+COPY src/ ./src/
+COPY config/ ./config/
+
+# Create non-root user for security
+RUN useradd -m -u 1000 appuser && \
+    chown -R appuser:appuser /app
+
+USER appuser
+
+# Run the application
+CMD ["uvicorn", "src.main:app", "--host", "0.0.0.0", "--port", "8000"]