Added:

- Messenger, Mercure
- chapter download flow (lelscan only)

config/packages/mercure.yaml

@@ -0,0 +1,8 @@
+mercure:
+    hubs:
+        default:
+            url: '%env(MERCURE_URL)%'
+            public_url: '%env(MERCURE_PUBLIC_URL)%'
+            jwt:
+                secret: '%env(MERCURE_JWT_SECRET)%'
+                publish: '*'

config/packages/messenger.yaml

@@ -0,0 +1,25 @@
+framework:
+    messenger:
+        # Uncomment this (and the failed transport below) to send failed messages to this transport for later handling.
+        # failure_transport: failed
+
+        transports:
+            # https://symfony.com/doc/current/messenger.html#transport-configuration
+            async: 
+                dsn: '%env(MESSENGER_TRANSPORT_DSN)%'
+                retry_strategy:
+                    max_retries: 0
+            # failed: 'doctrine://default?queue_name=failed'
+            # sync: 'sync://'
+
+        routing:
+            # Route your messages to the transports
+            'App\Message\DownloadChapter': async
+
+# when@test:
+#    framework:
+#        messenger:
+#            transports:
+#                # replace with your transport name here (e.g., my_transport: 'in-memory://')
+#                # For more Messenger testing tools, see https://github.com/zenstruck/messenger-test
+#                async: 'in-memory://'