feat: add webchat pwa push subscription support

src/config/schema.test.ts

@@ -147,6 +147,13 @@ describe('configSchema — server', () => {
     expect(result.server.nodes.push.enabled).toBe(false);
   });
 
+  it('defaults webchat push settings', () => {
+    const result = configSchema.parse(minimalConfig);
+    expect(result.server.webchat_push.enabled).toBe(false);
+    expect(result.server.webchat_push.vapid_public_key).toBeUndefined();
+    expect(result.server.webchat_push.max_subscriptions).toBe(5000);
+  });
+
   it('accepts custom node policy settings', () => {
     const result = configSchema.parse({
       ...minimalConfig,
@@ -194,6 +201,22 @@ describe('configSchema — server', () => {
     expect(result.server.discovery.service_type).toBe('_custom._tcp');
     expect(result.server.discovery.txt).toEqual({ env: 'dev' });
   });
+
+  it('accepts custom webchat push settings', () => {
+    const result = configSchema.parse({
+      ...minimalConfig,
+      server: {
+        webchat_push: {
+          enabled: true,
+          vapid_public_key: 'BOrSAMPLEPUBLICKEY____',
+          max_subscriptions: 42,
+        },
+      },
+    });
+    expect(result.server.webchat_push.enabled).toBe(true);
+    expect(result.server.webchat_push.vapid_public_key).toBe('BOrSAMPLEPUBLICKEY____');
+    expect(result.server.webchat_push.max_subscriptions).toBe(42);
+  });
 });
 
 describe('configSchema — browser', () => {