serve names the dashboard's address when the image serves it

The banner said nothing was served whenever a portal was configured,
which stopped being true once the image carries the dashboard.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

backend/fluksio/cli.py

@@ -535,6 +535,7 @@ def cmd_serve(args: argparse.Namespace) -> int:
 
     import uvicorn
 
+    from fluksio.core.config import settings
     from fluksio.flow import modules
     from fluksio.main import app
 
@@ -592,6 +593,9 @@ def cmd_serve(args: argparse.Namespace) -> int:
     config = cloud_config.load()
     _say(f"Fluksio {fluksio.__version__} — data in {data_dir}")
     _say(f"  API      {url}/api/v1")
+    if settings.FRONTEND_DIST:
+        # The address people open, which behind a published port is not `url`.
+        _say(f"  Dashboard {settings.FRONTEND_HOST}")
     # Which environment node code imports from is the thing a data scientist
     # most needs to know at this moment, and the answer differs depending on
     # how Fluksio was installed. Saying it costs one line.
@@ -606,7 +610,8 @@ def cmd_serve(args: argparse.Namespace) -> int:
         _say("           a venv of its own; the Modules screen installs into it.")
     if config is not None:
         _say(f"  Portal   {config.portal_url}, instance {config.instance_id}")
-        _say("  The dashboard is served by the portal; nothing is served here.")
+        if not settings.FRONTEND_DIST:
+            _say("  The dashboard is served by the portal; nothing is served here.")
     else:
         _say("  No portal. Pair this instance with:")
         _say("    fluksio enroll <code>")