Switching over to using unix sockets for ICP

roles/valkey/templates/valkey.conf.j2

@@ -8,12 +8,22 @@
 # Network Configuration
 # =================================================================
 
-# Bind to localhost only for security (like PostgreSQL)
+{% if valkey_bind %}
+# Bind to specified interfaces
 bind {{ valkey_bind }}
+{% else %}
+# No TCP binding - Unix socket only
+{% endif %}
 
-# Valkey port
+# Valkey port (0 = disable TCP)
 port {{ valkey_port }}
 
+# Unix socket configuration
+{% if valkey_unixsocket is defined %}
+unixsocket {{ valkey_unixsocket }}
+unixsocketperm {{ valkey_unixsocketperm }}
+{% endif %}
+
 # Protected mode - requires authentication
 protected-mode {{ 'yes' if valkey_protected_mode else 'no' }}