Make documentation standalone and generalize examples

docker/compose.local.yml

@@ -1,7 +1,6 @@
-# Integrated local stack — layered on top of compose.yml + compose.dev.yml by
-# the root `make dev`. Reattaches this stack's Traefik to the shared external
-# `proxy` network so it also routes the website stack's containers, and serves
-# everything over plain http on *.${DOMAIN} (default *.localhost).
+# Local proxy stack, layered over compose.yml + compose.dev.yml by
+# `make dev-local`. Traefik joins the external `proxy` network and serves
+# plain HTTP on *.${DOMAIN} (default *.localhost).
 
 # Everything here is reachable through Traefik on *.${DOMAIN}, so the host ports
 # compose.dev.yml publishes are dropped: they add nothing and make the whole
@@ -34,6 +33,6 @@ services:
       - BACKEND_CORS_ORIGINS=http://${DOMAIN:-localhost},http://app.${DOMAIN:-localhost},http://localhost:5173
 
 networks:
-  # Shared with the website stack; created by the root scripts/setup.sh.
+  # External reverse-proxy network. Created by `make init`.
   proxy:
     external: true