UX-13 P4 review fixes (PR #146, comment 1887)

R1: first_start also needs a Store created at this boot (Store.fresh), so
    old never-started sites (both TEST-23 add-ons, one in shadow) stay on Home.
R2: a kettle skip after a fall says on the last step that the reading went down.
R3: the shadow switch goes only on the model the wizard posts, never into V.
R4: Home Assistant not answering is red on the last step.
R5: meter + solar + battery below -300 W flags a reversed battery sensor.
R6: the live checks say what to change and where.

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

goodwe_controller/app/web.py

@@ -199,7 +199,9 @@ def build_app(controller, selfcfg=None) -> web.Application:
             # UX-13 P4: the setup wizard, and why it opens by itself.
             "setup": uipage.setup_spec(),
             "setup_needed": uipage.setup_needed(
-                options, store_data(), bool(getattr(controller, "auto", False))),
+                options, store_data(), bool(getattr(controller, "auto", False)),
+                fresh=getattr(getattr(controller, "store", None), "fresh",
+                              False) is True),
         })
         return web.json_response(model)