The local mode, offered by the menu that picks the mode

Modbus TCP has been a working control path since the server learned to dial
the charger, and the Charging page has asked for the address it needs — but
the Control mode selector never listed it. The mode could be reached only by
writing it through the API, which is to say not at all.

Both selectors now offer it, and both stop offering what it does not use: the
OCPP provisioning card and its "Use this one" button are gated on the modes
where the charger dials us, and Modbus gets a line saying where its address is
asked for instead. On the phone that gate is more than tidiness — the field is
a DropdownButtonFormField, so a mode saved from the web left it holding a value
none of its items matched.

Strings added in en/da/pl for both apps. The mode hint no longer says control
happens "over OCPP", because it no longer always does.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Web App/web/src/i18n/da.json

@@ -325,13 +325,15 @@
       "country": "Land",
       "countryHint": "Landekode på to bogstaver for din Anker-konto (f.eks. DE, GB, US).",
       "controlMode": "Styringstilstand",
-      "controlModeHint": "Hvordan DriverVault styrer laderen over OCPP.",
+      "controlModeHint": "Hvordan DriverVault styrer laderen.",
       "controlOff": "Fra (kun overvågning)",
       "controlOwn": "Eget CSMS (fuld styring)",
       "controlProxy": "Proxy-CSMS (videresendelse + styring)",
+      "controlModbus": "Modbus TCP (lokalt netværk)",
       "controlTitle": "Laderstyring (OCPP)",
       "controlOwnHint": "Laderen forbinder direkte til DriverVault som sit centralsystem. Peg laderens OCPP-backend på endepunktet nedenfor.",
       "controlProxyHint": "DriverVault videresender til Ankers sky og kan indsætte kommandoer. Peg laderens OCPP-backend på endepunktet nedenfor.",
+      "controlModbusHint": "DriverVault kontakter selv laderen på dit lokale netværk, så der er ingen adresse at pege laderen mod her. Slå Modbus TCP til i Anker-appen, og indtast den adresse, den viser, ved siden af laderens betjening på Opladning-siden.",
       "controlProvisionSteps": "I Anker-appen (eller laderens OCPP-indstillinger) sættes OCPP-backend-URL'en til endepunktet og autorisationsnøglen til tokenet ovenfor.",
       "chargerSerial": "Laderens serienummer",
       "controlCheck": "Tjek status",