feat(gateway): add optional bonjour/mdns discovery

src/config/schema.test.ts

@@ -74,6 +74,34 @@ describe('configSchema — server', () => {
     expect(result.server.ws_rate_limit.max_violations).toBe(3);
     expect(result.server.ws_rate_limit.violation_window_ms).toBe(2000);
   });
+
+  it('defaults discovery settings', () => {
+    const result = configSchema.parse(minimalConfig);
+    expect(result.server.discovery.enabled).toBe(false);
+    expect(result.server.discovery.service_name).toBe('flynn-gateway');
+    expect(result.server.discovery.service_type).toBe('_flynn._tcp');
+    expect(result.server.discovery.txt).toEqual({});
+  });
+
+  it('accepts custom discovery settings', () => {
+    const result = configSchema.parse({
+      ...minimalConfig,
+      server: {
+        discovery: {
+          enabled: true,
+          service_name: 'flynn-dev',
+          service_type: '_custom._tcp',
+          txt: {
+            env: 'dev',
+          },
+        },
+      },
+    });
+    expect(result.server.discovery.enabled).toBe(true);
+    expect(result.server.discovery.service_name).toBe('flynn-dev');
+    expect(result.server.discovery.service_type).toBe('_custom._tcp');
+    expect(result.server.discovery.txt).toEqual({ env: 'dev' });
+  });
 });
 
 describe('configSchema — agent_configs', () => {

src/config/schema.ts

@@ -32,6 +32,17 @@ const wsRateLimitSchema = z.object({
   violation_window_ms: z.number().min(1000).max(60000).default(10000),
 }).default({});
 
+const serverDiscoverySchema = z.object({
+  /** Enable local-network service discovery (mDNS/Bonjour advertisement). */
+  enabled: z.boolean().default(false),
+  /** Service instance name advertised on LAN. */
+  service_name: z.string().min(1).default('flynn-gateway'),
+  /** mDNS service type. */
+  service_type: z.string().min(1).default('_flynn._tcp'),
+  /** Additional TXT metadata advertised with the service record. */
+  txt: z.record(z.string(), z.string()).default({}),
+}).default({});
+
 const serverSchema = z.object({
   tailscale: tailscaleSchema,
   localhost: z.boolean().default(true),
@@ -48,6 +59,8 @@ const serverSchema = z.object({
   max_request_body_bytes: z.number().min(1024).max(10 * 1024 * 1024).default(1_048_576),
   /** Per-connection WebSocket ingress rate limit settings. */
   ws_rate_limit: wsRateLimitSchema,
+  /** Optional Bonjour/mDNS advertisement settings. */
+  discovery: serverDiscoverySchema,
 });
 
 /** All supported model provider identifiers. Used by the config schema and TUI autocompletion. */