feat: kaskad memo site with Basic Auth

Flask + Docker, header support links, install/uninstall curl scripts, password file or ADMIN_PASSWORD.

Co-authored-by: Cursor <cursoragent@cursor.com>

Dockerfile

@@ -0,0 +1,17 @@
+FROM python:3.12-slim-bookworm
+
+WORKDIR /app
+ENV PYTHONDONTWRITEBYTECODE=1
+ENV PYTHONUNBUFFERED=1
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY app.py .
+COPY templates ./templates
+COPY static ./static
+
+ENV PORT=8088
+EXPOSE 8088
+
+CMD ["sh", "-c", "exec gunicorn -w 2 -b 0.0.0.0:${PORT} app:app"]