fix(discovery): add missing domain to wideArea Zod config schema (#35615)

Merged via squash.

Prepared head SHA: d81d3321b6
Co-authored-by: ingyukoh <6015960+ingyukoh@users.noreply.github.com>
Co-authored-by: altaywtf <9790196+altaywtf@users.noreply.github.com>
Reviewed-by: @altaywtf

src/config/config.schema-regressions.test.ts

@@ -211,4 +211,17 @@ describe("config schema regressions", () => {
 
     expect(res.ok).toBe(true);
   });
+
+  it("accepts discovery.wideArea.domain for unicast DNS-SD", () => {
+    const res = validateConfigObject({
+      discovery: {
+        wideArea: {
+          enabled: true,
+          domain: "openclaw.internal",
+        },
+      },
+    });
+
+    expect(res.ok).toBe(true);
+  });
 });

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",

src/config/zod-schema.ts

@@ -596,6 +596,7 @@ export const OpenClawSchema = z
         wideArea: z
           .object({
             enabled: z.boolean().optional(),
+            domain: z.string().optional(),
           })
           .strict()
           .optional(),