Drop custom Caddy log file, fall back to journald

Caddy failed to start because the caddy user could not open
/var/log/caddy/auth.e-cosplay.fr.log. Rather than manage a
dedicated log directory + permissions, remove the custom `log`
block from the vhost so Caddy logs to stderr, which systemd
captures via journald (read with `journalctl -u caddy -f`).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

ansible/deploy.yml

@@ -110,15 +110,6 @@
         owner: root
         group: root
 
-    - name: Ensure /var/log/caddy directory exists
-      ansible.builtin.file:
-        path: /var/log/caddy
-        state: directory
-        mode: "0755"
-        owner: caddy
-        group: caddy
-      ignore_errors: true
-
     - name: Deploy Caddy vhost for {{ auth_domain }}
       ansible.builtin.template:
         src: e-auth.conf.j2

ansible/templates/e-auth.conf.j2

@@ -9,11 +9,4 @@
     encode gzip zstd
 
     reverse_proxy 127.0.0.1:{{ keycloak_local_port }}
-
-    log {
-        output file /var/log/caddy/{{ auth_domain }}.log {
-            roll_size 10mb
-            roll_keep 10
-        }
-    }
 }