feat: add taxonomy classify service + /classify endpoint

- scripts/taxonomy.py: shared taxonomy with 14 categories, keyword scorer
  and classify_text() function
- scripts/classify_server.py: FastAPI service — forwards to kreuzberg /extract,
  applies taxonomy, returns category/subcategory/confidence alongside full kreuzberg response
- Dockerfile.classify: lightweight Python image for classify service
- classify.nomad: Nomad job → classify.i80.dk
- .gitea/workflows/classify.yml: CI/CD pipeline (build + deploy)
- analyse_familie.py: refactored to import from taxonomy.py (no duplication)
- .gitignore: exclude dokumenter_keywords.* and extract_all.log

Dockerfile.classify

@@ -0,0 +1,13 @@
+FROM python:3.12-slim
+
+WORKDIR /app
+
+RUN pip install --no-cache-dir fastapi uvicorn[standard] httpx
+
+COPY scripts/taxonomy.py .
+COPY scripts/classify_server.py .
+
+ENV KREUZBERG_URL=https://check.i80.dk
+ENV PORT=8000
+
+CMD ["sh", "-c", "uvicorn classify_server:app --host 0.0.0.0 --port ${PORT}"]