Initial commit: habit tracker PWA with Google OAuth, push notifications

FastAPI + SQLAlchemy/Alembic + MariaDB backend with Jinja2/htmx/Alpine
server-rendered frontend. Multi-user via Google OAuth, daily habit
tracking, monthly/weekly history views, Web Push reminders via
APScheduler, and PWA support (manifest, service worker, offline caching).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

Dockerfile

@@ -0,0 +1,23 @@
+FROM python:3.13-slim
+
+ENV TZ=Asia/Seoul
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends tzdata \
+    && ln -snf /usr/share/zoneinfo/$TZ /etc/localtime \
+    && echo $TZ > /etc/timezone \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+
+COPY pyproject.toml alembic.ini ./
+COPY app ./app
+COPY migrations ./migrations
+COPY scripts ./scripts
+
+RUN pip install --no-cache-dir . \
+    && chmod +x scripts/docker-entrypoint.sh
+
+EXPOSE 8000
+
+ENTRYPOINT ["scripts/docker-entrypoint.sh"]