Rename the import package app to fluksio

A wheel whose top-level module is `app` collides with anything else in a
user's venv, so the package that is about to be published takes the name
it is published under. Only the Python package moves; the repo, the
Docker WORKDIR and the compose project keep theirs.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

backend/tests/api/routes/test_panels.py

@@ -2,8 +2,8 @@
 
 from fastapi.testclient import TestClient
 
-from app.cloud import config as cloud_config
-from app.core.config import settings
+from fluksio.cloud import config as cloud_config
+from fluksio.core.config import settings
 
 PREFIX = f"{settings.API_V1_STR}/panels"
 DASHBOARDS = f"{settings.API_V1_STR}/dashboards"
@@ -276,7 +276,7 @@ def test_a_remote_device_is_paired_at_the_portal(
     """
     import httpx
 
-    from app.api.routes import panels as panels_route
+    from fluksio.api.routes import panels as panels_route
 
     calls: list[dict[str, object]] = []
 
@@ -378,7 +378,7 @@ def test_a_panels_socket_carries_only_what_it_draws(
     applied to what goes out: no node status, no logs, no shape of the graph,
     and no value belonging to a dashboard this panel does not show.
     """
-    from app.api.routes.flows import (
+    from fluksio.api.routes.flows import (
         event_for_panel,
         panel_scope,
         snapshot_payload,