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/api/public.py

@@ -1,8 +1,13 @@
 """انتهای عمومی — خواندن محتوای سایت بدون نیاز به احراز هویت."""
 
+import boto3
+from botocore.config import Config as BotoConfig
 from fastapi import APIRouter, Depends, HTTPException
+from fastapi.responses import JSONResponse
+from sqlalchemy import text
 from sqlalchemy.orm import Session
 
+from ..config import settings
 from ..database import get_db
 from .. import models
 from ..schemas import (
@@ -22,9 +27,44 @@ from ..schemas import (
 router = APIRouter()
 
 
+@router.get("/live")
+def live():
+    """زنده‌بودن پروسه — بدون وابستگی؛ برای restart gate استفاده نمی‌شود."""
+    return {"status": "ok"}
+
+
 @router.get("/health")
-def health():
-    return {"status": "ok", "app": "Aramesh Building Group API"}
+def health(db: Session = Depends(get_db)):
+    """بررسی عمق سلامت — اتصال DB و MinIO واقعاً آزموده می‌شود؛
+    در صورت خرابی هر وابستگی، 503 با جزئیات برمی‌گردد."""
+    checks: dict[str, str] = {}
+
+    try:
+        db.execute(text("SELECT 1"))
+        checks["database"] = "ok"
+    except Exception:
+        checks["database"] = "error"
+
+    try:
+        s3 = boto3.client(
+            "s3",
+            endpoint_url=settings.s3_endpoint,
+            aws_access_key_id=settings.s3_access_key,
+            aws_secret_access_key=settings.s3_secret_key,
+            region_name="us-east-1",
+            config=BotoConfig(connect_timeout=2, read_timeout=2, retries={"max_attempts": 1}),
+        )
+        s3.head_bucket(Bucket=settings.s3_bucket)
+        checks["storage"] = "ok"
+    except Exception:
+        checks["storage"] = "error"
+
+    if any(state != "ok" for state in checks.values()):
+        return JSONResponse(
+            status_code=503,
+            content={"status": "degraded", "checks": checks},
+        )
+    return {"status": "ok", "app": "Aramesh Building Group API", "checks": checks}
 
 
 @router.get("/brand", response_model=BrandOut)