podman/caddy: fit kasse's single-front-Caddy model

- caddy -> profiles: [edge]: on kasse the host Caddy already owns 80/443 and
  reverse-proxies vel.klingenbergbygg.no -> 127.0.0.1:3050, so the bundled
  Caddy is off by default (use `--profile edge` only on a standalone host)
- portal publishes 127.0.0.1:3050 so the host Caddy reaches it; the existing
  conf.d/vel.klingenbergbygg.no target is unchanged

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

compose.yml

@@ -1,8 +1,10 @@
-# Tomter Vel's own platform: one host, four containers, everything
+# Tomter Vel's own platform: portal + its own Kanidm and NATS as podman
-# behind Caddy. The content (pages, forms, desks) is not here: portal
+# containers. The content (pages, forms, desks) is not here: portal fetches
-# fetches it from tomtervel/questions on prosjekt.klingenbergbygg.no
+# it from tomtervel/questions on prosjekt.klingenbergbygg.no and hot-reloads
-# and hot-reloads it over NATS. This repo owns the host: identity,
+# it over NATS. This repo owns identity, the bus, and which portal version
-# the bus, TLS, and which portal version runs.
+# runs. TLS depends on where it runs: on a standalone host the bundled Caddy
+# (`--profile edge`) terminates it; on kasse the host Caddy already owns
+# 80/443 and reverse-proxies vel.klingenbergbygg.no -> portal (127.0.0.1:3050).
 #
 #   bootstrap.sh   first time on a fresh host: renders configs from
 #                  .env, makes Kanidm's internal cert, starts it all,
@@ -14,6 +16,11 @@ name: tomtervel
 
 services:
   caddy:
+    # Bundled TLS for a standalone host only: `podman compose --profile edge up`.
+    # On kasse the host Caddy already owns 80/443 (it reverse-proxies
+    # vel.klingenbergbygg.no -> 127.0.0.1:3050, the portal port below), so this
+    # is profiled off there to avoid the port clash. Default `up` skips it.
+    profiles: ["edge"]
     image: caddy:2
     restart: unless-stopped
     ports:
@@ -73,6 +80,11 @@ services:
       LEPTOS_SITE_ADDR: 0.0.0.0:3000
       LEPTOS_SITE_ROOT: site
       LEPTOS_HASH_FILES: "true"
+    ports:
+      # Host-published for kasse's host Caddy (vel.klingenbergbygg.no -> here).
+      # With --profile edge the bundled Caddy proxies portal:3000 internally
+      # instead, but publishing loopback-only is harmless there.
+      - "127.0.0.1:3050:3000"
     depends_on:
       nats:
         condition: service_healthy