Encrypted DNS health, comparing a zone's views, --local everywhere

jarld checks the DoT and DoH listeners every 10 minutes as a client would (page, dashboard, jarl encrypted-dns health, jarl_encrypted_dns_up). The Compare views tab and jarl zone diff show what differs between a zone's views, with Use this version. --local works on unlinked zones. A changed certificates.dir is followed by encrypted DNS's tls statements. Sharing an already shared version replaces other views' overrides.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

internal/server/h_changes.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"encoding/json"
 	"errors"
+	"fmt"
 	"net/http"
 	"strconv"
 	"time"
@@ -285,6 +286,20 @@ func (s *Server) status(w http.ResponseWriter, r *http.Request, p *auth.Principa
 		resp.TOTP = s.totpOverview(r.Context())
 		resp.Certificates = s.certSummary(r.Context())
 	}
+	if p.Can(auth.Action{Resource: auth.ResOptions}) {
+		if h := s.encryptedDNSHealth(); h != nil {
+			sum := &api.EncDNSSummary{Checked: h.Checked, OK: h.OK(), Problems: []string{}, Warnings: []string{}}
+			for _, pr := range h.Probes {
+				where := fmt.Sprintf("%s on %s port %d", map[string]string{"dot": "DNS over TLS", "doh": "DNS over HTTPS"}[pr.Kind], pr.Address, pr.Port)
+				if pr.Problem != "" {
+					sum.Problems = append(sum.Problems, where+": "+pr.Problem)
+				} else if pr.Warning != "" {
+					sum.Warnings = append(sum.Warnings, where+": "+pr.Warning)
+				}
+			}
+			resp.EncryptedDNS = sum
+		}
+	}
 	if p.Can(auth.Action{Resource: auth.ResBlocking}) {
 		resp.BlocklistErrors = s.blocklistErrors(r.Context())
 		if st, err := s.store.LoadState(r.Context()); err == nil {