feat(monitoring): observability stack + app instrumentation

- /health/ready (DB+MinIO+Casdoor checks, webhook post-deploy gate),
  /metrics via prometheus-fastapi-instrumentator, Sentry/GlitchTip capture,
  X-Request-ID middleware + JSON access logging (PROCUREMENT_LOG_FORMAT)
- server-side analytics (OpenPanel Track API): login, quote lifecycle,
  receipts — fire-and-forget, disabled without env config
- monitoring/ compose project: GlitchTip(+pg), Prometheus(+alerts),
  Grafana(provisioned ERP dashboard), Loki+Promtail, node/postgres
  exporters, cAdvisor — mem-limited (~2.2GB), loopback admin UIs,
  separate from app deploys; erp_shared network for scraping
- frontend: @openpanel/web + @sentry/react (build-arg gated, no-op when
  unset), funnel events (login, wizard steps, quote submitted)
- compose: api healthcheck, observability env wiring, .env.example keys

frontend/src/pages/Wizard/WizardPage.tsx

@@ -1,4 +1,5 @@
 import { useEffect, useMemo, useState } from "react";
+import { track } from "../../lib/analytics";
 import { Link, useNavigate, useSearchParams } from "react-router-dom";
 import { ChevronRight, ChevronLeft, Check } from "lucide-react";
 import { toast } from "sonner";
@@ -118,6 +119,7 @@ export function WizardPage() {
   const goToStep = (n: number) => {
     setCurrentStep(n);
     setHighestVisited((h) => Math.max(h, n));
+    track("wizard_step", { step: n, direction: n > currentStep ? "forward" : "back" });
     window.scrollTo({ top: 0, behavior: "smooth" });
   };
 
@@ -405,6 +407,7 @@ export function WizardPage() {
         }
       }
       toast.success("پیشنهاد ذخیره شد.");
+      track("quote_submitted", { quote_id: created.id, items: lineItems.length });
       navigate("/");
     } catch (e) {
       const target = resolveErrorTarget(e);