feat: add CI/CD pipeline and bump version to 1.0.0

- Add Dockerfile for containerized deployment (Python 3.12-slim, port 8000)
- Add Gitea Actions workflow triggered on release publish
- Builds and pushes to git.schweitz.net registry with latest and version tags
- Bump version to 1.0.0 marking production-ready release
- Update CHANGELOG with CI/CD and deployment configuration

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Dockerfile

@@ -0,0 +1,17 @@
+FROM python:3.12-slim
+
+WORKDIR /app
+
+RUN apt-get update && apt-get install -y curl \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY src/ ./src/
+
+ENV PYTHONPATH=/app
+
+EXPOSE 8000
+
+CMD ["uvicorn", "src.main:app", "--host", "0.0.0.0", "--port", "8000", "--workers", "1"]