Add Danish self-serve labels and guided wash flow steps. Update UI with guided step actions and bottom control integration. Fix translations and refine E2E/unit test coverage for self-serve flow behavior.

src/i18n/locales/da.json

@@ -3040,7 +3040,7 @@
   "self_wash": {
     "add_as_new_vehicle": "Tilføj {plate} som nyt køretøj",
     "answer_questions": "Besvar spørgsmål",
-    "assistance": "Assistanse",
+    "assistance": "Har du brug for hjælp?",
     "attached_file": "Vedhæftet fil",
     "available": "Tilgængelig",
     "configure_wash": "Konfigurer vask",
@@ -3077,8 +3077,8 @@
     "wash_completed_message": "Din vask er nu færdig! Tak fordi du brugte vores selvbetjeningsvask.",
     "wash_in_progress": "Vask i gang",
     "wash_lane": "Vaskebane",
-    "open_property_access_gate": "Aabn adgangsport",
-    "open_property_exit_gate": "Aabn udgangsport",
+    "open_property_access_gate": "Åbn adgangsport",
+    "open_property_exit_gate": "Åbn udgangsport",
     "department_no_self_wash_in_staffed_hours": "Denne afdeling tilbyder ikke selvvask i bemandede timer."
   },
   "settings": {