feat: initial CronHub release

- FastAPI backend avec APScheduler
- API REST complète (CRUD + toggle + run + logs)
- UI Jinja2 + Tailwind (charte orange/slate)
- SQLite pour la persistance
- Docker + Traefik labels
- Swagger docs auto sur /docs

Dockerfile

@@ -0,0 +1,19 @@
+FROM python:3.12-slim
+
+WORKDIR /app
+
+# Dépendances système
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    curl \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY app/ ./app/
+COPY templates/ ./templates/
+
+VOLUME ["/data"]
+EXPOSE 8000
+
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000", "--workers", "1"]