Document Sales Centre Meet API key and add service API test.

Co-authored-by: Cursor <cursoragent@cursor.com>

.env.example

@@ -74,6 +74,7 @@ MEET_API_KEY_FRONTDESK=
 MEET_API_KEY_HR=
 MEET_API_KEY_SUPPORT=
 MEET_API_KEY_INVOICE=
+# Same secret on both apps: MEET_API_KEY_SALES_CENTRE here and in ladill (.env MEET_API_KEY_SALES_CENTRE).
 MEET_API_KEY_SALES_CENTRE=
 
 # --- Ladill Events (registration for webinars & conferences) ---

tests/Feature/MeetWebTest.php

@@ -513,6 +513,23 @@ class MeetWebTest extends TestCase
             ->assertJsonPath('room.title', 'Invoice review');
     }
 
+    public function test_service_api_can_create_room_for_sales_centre_app(): void
+    {
+        \Illuminate\Support\Facades\Http::fake();
+        config(['meet.service_api_keys.sales_centre' => 'test-sales-centre-key']);
+
+        $this->postJson('/api/service/v1/rooms', [
+            'owner_ref' => $this->user->public_id,
+            'host_user_ref' => $this->user->public_id,
+            'title' => 'Ladill demo with Prospect',
+            'type' => 'instant',
+            'source' => ['app' => 'sales_centre', 'entity_type' => 'sales_lead', 'entity_id' => '42'],
+            'invite_emails' => ['prospect@demo.test'],
+        ], ['Authorization' => 'Bearer test-sales-centre-key'])
+            ->assertCreated()
+            ->assertJsonPath('room.title', 'Ladill demo with Prospect');
+    }
+
     public function test_service_api_can_create_town_hall_room(): void
     {
         \Illuminate\Support\Facades\Http::fake();