fix(config): add wide-area discovery domain metadata

CHANGELOG.md

@@ -24,6 +24,7 @@ Docs: https://docs.openclaw.ai
 - Android/onboarding QR scan: switch setup QR scanning to Google Code Scanner so onboarding uses a more reliable scanner instead of the legacy embedded ZXing flow. (#45021) Thanks @obviyus.
 - Config/web fetch: restore runtime validation for documented `tools.web.fetch.readability` and `tools.web.fetch.firecrawl` settings so valid web fetch configs no longer fail with unrecognized-key errors. (#42583) Thanks @stim64045-spec.
 - Signal/config validation: add `channels.signal.groups` schema support so per-group `requireMention`, `tools`, and `toolsBySender` overrides no longer get rejected during config validation. (#27199) Thanks @unisone.
+- Config/discovery: accept `discovery.wideArea.domain` in strict config validation so unicast DNS-SD gateway configs no longer fail with an unrecognized-key error. (#35615) Thanks @ingyukoh.
 
 ## 2026.3.12
 

src/config/schema.help.quality.test.ts

@@ -296,6 +296,7 @@ const TARGET_KEYS = [
   "web.reconnect.jitter",
   "web.reconnect.maxAttempts",
   "discovery",
+  "discovery.wideArea.domain",
   "discovery.wideArea.enabled",
   "discovery.mdns",
   "discovery.mdns.mode",

src/config/schema.help.ts

@@ -292,6 +292,8 @@ export const FIELD_HELP: Record<string, string> = {
     "Wide-area discovery configuration group for exposing discovery signals beyond local-link scopes. Enable only in deployments that intentionally aggregate gateway presence across sites.",
   "discovery.wideArea.enabled":
     "Enables wide-area discovery signaling when your environment needs non-local gateway discovery. Keep disabled unless cross-network discovery is operationally required.",
+  "discovery.wideArea.domain":
+    "Optional unicast DNS-SD domain for wide-area discovery, such as openclaw.internal. Use this when you intentionally publish gateway discovery beyond local mDNS scopes.",
   "discovery.mdns":
     "mDNS discovery configuration group for local network advertisement and discovery behavior tuning. Keep minimal mode for routine LAN discovery unless extra metadata is required.",
   tools:

src/config/schema.labels.ts

@@ -654,6 +654,7 @@ export const FIELD_LABELS: Record<string, string> = {
   discovery: "Discovery",
   "discovery.wideArea": "Wide-area Discovery",
   "discovery.wideArea.enabled": "Wide-area Discovery Enabled",
+  "discovery.wideArea.domain": "Wide-area Discovery Domain",
   "discovery.mdns": "mDNS Discovery",
   canvasHost: "Canvas Host",
   "canvasHost.enabled": "Canvas Host Enabled",