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/components/ErrorBoundary.tsx

@@ -1,4 +1,5 @@
 import { Component, type ErrorInfo, type ReactNode } from "react";
+import { captureError } from "../lib/analytics";
 
 interface Props {
   children: ReactNode;
@@ -19,6 +20,8 @@ export class ErrorBoundary extends Component<Props, State> {
 
   componentDidCatch(error: Error, info: ErrorInfo) {
     console.error("ErrorBoundary caught:", error, info);
+    // GlitchTip/Sentry (no-op بدون VITE_SENTRY_DSN)
+    captureError(error);
   }
 
   private retry = () => {