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/ui_text/en.json

@@ -191,6 +191,7 @@
         "wrong_dsmr": {"description": "The reading went down by {d}, so check that import and export are not swapped."},
         "self": {"description": "The add-on reads this meter itself, so Home shows its direction after the restart."},
         "skipped": {"description": "The meter direction is not tested, so check it on Home after the restart."},
+        "skipped_wrong": {"description": "The kettle test saw the meter reading go down, so check its direction in step 1 before you start control."},
         "tested": {"description": "The meter direction was tested with a kettle."},
         "needed": {"description": "Do the kettle test first, or skip it."}
       },