chore: bump version to 1.7.21 and update CHANGELOG and docs

tests/integration/ombi.test.js

@@ -1014,10 +1014,16 @@ describe('POST /api/ombi/webhook/test', () => {
     expect(webhookScope.isDone()).toBe(true);
   });
 
-  it('handles webhook send errors gracefully', async () => {
+  it('handles webhook send errors gracefully when both public and loopback fail', async () => {
     nock(SOFARR_BASE)
       .post('/api/webhook/ombi')
       .reply(500, { error: 'Internal server error' });
+    nock('http://127.0.0.1:3001')
+      .post('/api/webhook/ombi')
+      .reply(500, { error: 'Internal server error' });
+    nock('https://127.0.0.1:3001')
+      .post('/api/webhook/ombi')
+      .reply(500, { error: 'Internal server error' });
     
     const { cookies, csrfToken } = await authenticateUser(app, 'TestUser', false);
     
@@ -1029,4 +1035,26 @@ describe('POST /api/ombi/webhook/test', () => {
     
     expect(res.body.error).toBe('Failed to test Ombi webhook');
   });
+
+  it('falls back to local loopback when public URL request fails', async () => {
+    nock(SOFARR_BASE)
+      .post('/api/webhook/ombi')
+      .replyWithError('Connection refused');
+    nock('http://127.0.0.1:3001')
+      .post('/api/webhook/ombi')
+      .reply(200, { received: true });
+    nock('https://127.0.0.1:3001')
+      .post('/api/webhook/ombi')
+      .reply(200, { received: true });
+    
+    const { cookies, csrfToken } = await authenticateUser(app, 'TestUser', false);
+    
+    const res = await request(app)
+      .post('/api/ombi/webhook/test')
+      .set('Cookie', cookies)
+      .set('X-CSRF-Token', csrfToken)
+      .expect(200);
+    
+    expect(res.body.success).toBe(true);
+  });
 });