feat(privacy): surface the customer-data scan above the hardware report

- Move the "Customer data" panel to the top of the data section (above the
  chart iframe); header + customer guess always visible, findings table
  collapsed by default and expandable.
- Add a chart top-notice (above Board/CPUs) summarizing the scan via the
  viewer's standard NoticeTitle/NoticeBody - interim until chart custom panels.
- Allowlist ieisystem.com (IEI = Inspur brand infrastructure).
- Add chart-custom-panels-spec.md: a reusable, versioned contract proposal for
  host-supplied panels across every app embedding reanimator/chart.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

internal/server/handlers.go

@@ -85,7 +85,13 @@ func (s *Server) handleChartCurrent(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	html, err := chartviewer.RenderHTMLWithOptions(snapshotBytes, title, chartviewer.RenderOptions{})
+	opts := chartviewer.RenderOptions{}
+	if nt, nb := privacyNotice(result.PrivacyScan); nt != "" {
+		opts.NoticeTitle = nt
+		opts.NoticeBody = nb
+	}
+
+	html, err := chartviewer.RenderHTMLWithOptions(snapshotBytes, title, opts)
 	if err != nil {
 		s.htmlError(w, "failed to render chart: "+err.Error(), http.StatusInternalServerError)
 		return
@@ -95,6 +101,68 @@ func (s *Server) handleChartCurrent(w http.ResponseWriter, r *http.Request) {
 	_, _ = w.Write(rewriteChartStaticPaths(html))
 }
 
+// privacyNotice renders the customer-data scan summary as the chart viewer's
+// top notice panel (above the Board/CPUs sections). Uses the viewer's standard
+// NoticeTitle/NoticeBody mechanism - no chart changes. Full findings stay in the
+// "Customer data" panel and GET /api/privacy-scan.
+func privacyNotice(scan *models.PrivacyScan) (title, body string) {
+	if scan == nil || (scan.Summary.Total == 0 && len(scan.Customers) == 0) {
+		return "", ""
+	}
+
+	title = "Customer data detected"
+	if len(scan.Customers) > 0 {
+		title += " - likely " + scan.Customers[0].Domain
+	}
+
+	var b strings.Builder
+	fmt.Fprintf(&b, "%d finding(s)", scan.Summary.Total)
+	sev := make([]string, 0, 3)
+	if scan.Summary.High > 0 {
+		sev = append(sev, fmt.Sprintf("%d high", scan.Summary.High))
+	}
+	if scan.Summary.Medium > 0 {
+		sev = append(sev, fmt.Sprintf("%d medium", scan.Summary.Medium))
+	}
+	if scan.Summary.Low > 0 {
+		sev = append(sev, fmt.Sprintf("%d low", scan.Summary.Low))
+	}
+	if len(sev) > 0 {
+		fmt.Fprintf(&b, " (%s)", strings.Join(sev, ", "))
+	}
+	fmt.Fprintf(&b, " across %d file(s).", scan.FilesScanned)
+	if cats := topCategories(scan.Summary.ByCategory, 4); len(cats) > 0 {
+		fmt.Fprintf(&b, " Categories: %s.", strings.Join(cats, ", "))
+	}
+	b.WriteString(` Review the "Customer data" panel and sanitize this dump before sharing it.`)
+	return title, b.String()
+}
+
+func topCategories(byCategory map[string]int, n int) []string {
+	type kv struct {
+		k string
+		v int
+	}
+	items := make([]kv, 0, len(byCategory))
+	for k, v := range byCategory {
+		items = append(items, kv{k, v})
+	}
+	sort.Slice(items, func(i, j int) bool {
+		if items[i].v != items[j].v {
+			return items[i].v > items[j].v
+		}
+		return items[i].k < items[j].k
+	})
+	out := make([]string, 0, n)
+	for i, it := range items {
+		if i >= n {
+			break
+		}
+		out = append(out, it.k)
+	}
+	return out
+}
+
 func currentReanimatorSnapshotBytes(result *models.AnalysisResult) ([]byte, error) {
 	reanimatorData, err := exporter.ConvertToReanimator(result)
 	if err != nil {