v0.327.1: files.<domain> reaches FileBrowser again — a file route by name, not Docker labels

v0.327.0's box walk: files.<domain> timed out on demo-hp and the N100. With labels, Traefik kept the address it chose at
container start (on felhom-filebrowser, before the gate joined traefik-public). FileBrowser now carries no Traefik
labels; dynamic/filebrowser.yml routes files.<domain> to http://filebrowser:80 by name, resolved per connection and
only while the gate keeps it on traefik-public. Test extended, red-proved.

Claude-Session: https://claude.ai/code/session_0159rPz1ZhFKsS53msqPYxtS

controller/internal/infra/infra.go

@@ -245,13 +245,11 @@ services:
       timeout: 5s
       retries: 3
       start_period: 15s
-    labels:
-      - "traefik.enable=true"
-      - "traefik.http.routers.filebrowser.rule=Host(`+"`"+`files.%s`+"`"+`)"
-      - "traefik.http.routers.filebrowser.entrypoints=websecure"
-      - "traefik.http.routers.filebrowser.tls=true"
-      - "traefik.http.services.filebrowser.loadbalancer.server.port=80"
-      - "traefik.docker.network=traefik-public"
+    # No Traefik labels (v0.327.1): the route is a file-provider route (RenderFileBrowserRoute) to http://filebrowser:80
+    # BY NAME. Docker labels made Traefik pick FileBrowser's address once, at container start — on its own network,
+    # before the box joined it to traefik-public — and a later "network connect" did not refresh it (demo-hp and the
+    # N100 timed out after v0.327.0). By name, the address is resolved per connection, and only while FileBrowser is on
+    # traefik-public.
 
 volumes:
   filebrowser_data:
@@ -259,7 +257,30 @@ volumes:
 networks:
   %s:
     name: %s
-`, domain, FileBrowserImage, groupSection, storageSection, FileBrowserNetwork, domain, FileBrowserNetwork, FileBrowserNetwork)
+`, domain, FileBrowserImage, groupSection, storageSection, FileBrowserNetwork, FileBrowserNetwork, FileBrowserNetwork)
+}
+
+// RenderFileBrowserRoute is the traefik file-provider route for files.<domain> → http://filebrowser:80 by NAME (R-1126,
+// v0.327.1). The name resolves only while FileBrowser is on traefik-public, which the box allows only after this run's
+// default login was checked — so the route can stay in place and still never reach an unchecked FileBrowser (502 then).
+// TLS as the old Docker label had it (`tls: {}`, the default certificate store / the wildcard).
+func RenderFileBrowserRoute(domain string) string {
+	return fmt.Sprintf(`# Traefik dynamic route for FileBrowser (files.<domain>) — managed by felhom-controller (R-1126).
+# WARNING: auto-generated at base-infra bring-up. Manual edits are overwritten.
+http:
+  routers:
+    filebrowser:
+      rule: "Host(`+"`"+`files.%s`+"`"+`)"
+      entryPoints:
+        - websecure
+      service: filebrowser
+      tls: {}
+  services:
+    filebrowser:
+      loadBalancer:
+        servers:
+          - url: "http://filebrowser:80"
+`, domain)
 }
 
 // RenderControllerRoute returns a traefik file-provider dynamic config routing the controller's own