fix: pass full config to ChatmailDeployer and ensure mailboxes_dir

ChatmailDeployer now receives the full config object
so it can access mailboxes_dir and create this directory
during deployment, preventing mail delivery failures.

cmdeploy/src/cmdeploy/deployers.py

@@ -463,8 +463,9 @@ class ChatmailDeployer(Deployer):
         ("iroh", None, None),
     ]
 
-    def __init__(self, mail_domain):
+    def __init__(self, config):
-        self.mail_domain = mail_domain
+        self.config = config
+        self.mail_domain = config.mail_domain
 
     def install(self):
         files.put(
@@ -513,6 +514,15 @@ class ChatmailDeployer(Deployer):
             ],
         )
 
+        files.directory(
+            name=f"Ensure mailboxes directory {self.config.mailboxes_dir} exists",
+            path=str(self.config.mailboxes_dir),
+            user="vmail",
+            group="vmail",
+            mode="700",
+            present=True,
+        )
+
 
 class FcgiwrapDeployer(Deployer):
     def install(self):
@@ -631,7 +641,7 @@ def deploy_chatmail(config_path: Path, disable_mail: bool, website_only: bool) -
     tls_deployer = get_tls_deployer(config, mail_domain)
 
     all_deployers = [
-        ChatmailDeployer(mail_domain),
+        ChatmailDeployer(config),
         LegacyRemoveDeployer(),
         FiltermailDeployer(),
         JournaldDeployer(),