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/app/main.py

@@ -1,15 +1,17 @@
 from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
+from fastapi.middleware.gzip import GZipMiddleware
 
 from . import models  # noqa: F401 — ثبت مدل‌ها پیش از ساخت جداول
 from .api import admin, forms, public
 from .config import settings
 from .database import Base, engine
-from .migrations import run_all as run_migrations
 from .seo_pages import router as seo_router
 
+# ساخت جداول پایه — تغییرات بعدی اسکیما فقط با revisionهای Alembic اعمال می‌شوند
+# (مigrations/versions). اجرای اینجا برای اجرای مستقیم uvicorn در محیط توسعه است؛
+# در کانتینر، CMD همین کار را قبل از alembic upgrade head انجام می‌دهد.
 Base.metadata.create_all(bind=engine)
-run_migrations()
 
 app = FastAPI(
     title="Aramesh Building Group API",
@@ -29,6 +31,8 @@ app.add_middleware(
     allow_methods=["*"],
     allow_headers=["*"],
 )
+# پاسخ‌های JSON /api — فشرده‌سازی وقتی بدنه قابل‌توجه است
+app.add_middleware(GZipMiddleware, minimum_size=1024)
 
 app.include_router(public.router, prefix="/api", tags=["عمومی"])
 app.include_router(forms.router, prefix="/api", tags=["فرم‌ها"])
@@ -37,6 +41,12 @@ app.include_router(admin.router, prefix="/api/admin", tags=["پنل مدیریت
 # robots.txt، sitemap.xml و HTML صفحات وبلاگ/پروژه با متای سئو — در ریشه دامنه
 app.include_router(seo_router, tags=["سئو"])
 
+# متریک‌های Prometheus — فقط Prometheus در شبکه داخلی اسکرپ می‌کند
+# (Traefik مسیر /metrics را نمی‌شناسد، پس از بیرون در دسترس نیست)
+from prometheus_fastapi_instrumentator import Instrumentator  # noqa: E402
+
+Instrumentator().instrument(app).expose(app, endpoint="/metrics", include_in_schema=False)
+
 
 @app.get("/")
 def root():