feat(stack): full overhaul — hardening, ops tooling, monitoring, analytics, chatbot

Security: deep /api/health (DB+MinIO probes, 503 on failure) + /api/live;
rate-limited public forms with honeypots; real client IP behind Traefik
(--proxy-headers); TipTap URL sanitization on write (nh3); non-root
containers + slim .dockerignore; prod MinIO console bound to 127.0.0.1;
HSTS/nosniff on TLS routers; JWT 8h; no default credentials in code.

Reliability: Alembic migrations (create_all baseline); graceful shutdown
(exec uvicorn); hardened backups (checksums, sanity check, freshness gauge,
optional rclone off-site) + restore.sh + hourly db-backup sidecar (ops
profile); stack.sh ops tooling (deploy/logs/health/backup/restore/monitoring);
.gitattributes LF for shell scripts.

Orchestration: json-file log rotation, pinned images, per-service memory
limits, edge/internal networks, Traefik ping/accesslog/metrics + flood
limiter, conditional minio-setup, pgvector db image, one-shot db-init
(umami + aramesh_chatbot databases).

Chatbot: unified from site-chatbot branch (RAG + pgvector, SSE, ChatWidget).

Monitoring: Prometheus/Alertmanager/Loki/Promtail/Grafana + cAdvisor,
node/postgres/blackbox exporters, provisioned dashboards and 10 alert
rules; alerts delivered to Bale (tapi.bale.ai — Telegram-compatible).

Analytics: Umami on shared Postgres, build-time tracker injection, custom
events (contact/newsletter/phone/chat/lang) via frontend/src/analytics.ts.

Hygiene: CSV export for contact messages and subscribers; upload image
optimization (Pillow); CI script + GitHub-compatible workflow; audit.sh;
gen-env.sh for strong credentials.

backend/Dockerfile

@@ -1,3 +1,4 @@
+# بک‌اند FastAPI — تصویر باریک و بدون root
 FROM python:3.13-slim
 
 WORKDIR /app
@@ -9,8 +10,16 @@ COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
 
 COPY app ./app
+COPY alembic.ini ./
+COPY migrations ./migrations
+
+# کاربر بدون دسترسی root — برنامه چیزی روی دیسک محلی نمی‌نویسد
+RUN useradd --system --create-home appuser \
+    && chown -R appuser:appuser /app
+USER appuser
 
 EXPOSE 8000
-
-# ساخت جداول و seed (بدون حذف داده‌های موجود) و سپس اجرای سرور
-CMD ["sh", "-c", "python -m app.seed && uvicorn app.main:app --host 0.0.0.0 --port 8000"]
+# ساخت جداول پایه، مهاجرت‌های Alembic و seed (بدون حذف داده‌های موجود) و سپس
+# اجرای سرور با exec — تا SIGTERM (docker stop) مستقیم به uvicorn برسد و خاموشی
+# تمیز انجام شود؛ --proxy-headers برای دیدن IP واقعی کلاینت پشت Traefik
+CMD ["sh", "-c", "python -m app.db_init && alembic upgrade head && python -m app.seed && exec uvicorn app.main:app --host 0.0.0.0 --port 8000 --proxy-headers --forwarded-allow-ips='*'"]