feat(touch): a list users can add regions to (#271)

The other half of the request. The previous commit made a scoped message
resolvable to a region NAME; this is the list that decides which names are on
offer. Until now the registry only filled itself from our own default region and
per-channel scope overrides, so a region you can see traffic from but do not
participate in could never be named -- which is most of them.

Settings -> Radio, under the region-scope field, opens "Known regions": a field
plus Add, and a row per region with Remove. Deliberately placed next to the
region we SEND under, because the distinction is the confusing part -- that field
is the region we transmit in, this list is the regions we can RECOGNISE, and a
region only has to be named to be recognised, since its key is SHA256 of that
name. You do not need to be in a region to identify its traffic.

Remove is a RETIRE, not a delete. The slot and name stay bound; the region simply
stops being matched from that point on. Freeing the slot for reuse would hand it
to the next region added and silently relabel every message already received
under the old one -- the exact failure #271 warned about, and the reason slots
were never list indices. Re-adding a retired region revives its original slot, so
its old and new messages stay one region rather than splitting in two.

The persisted slot file gains an active mask and a magic bump (RGS1 -> RGS2). An
RGS1 file still loads, with every assigned slot treated as live, which is what it
meant before the mask existed.

Two failures are reported rather than silently doing nothing: the list being full
(all 14 slot bindings used, retired ones included -- they are permanent), and a
name that canonicalises to nothing, like blank or a bare "#".

Not board-gated -- the page uses the standard app-page chrome, so it inherits the
tall title bar, the back chevron and focus-group navigation on the keyboard-only
boards the same way Blocked users does. Laid out and reasoned about on the T-Deck
for now; the short-panel boards want a look on real glass before anyone calls it
done there. The page title is untranslated, matching every other app page here
(Blocked users, Spectrum, Discover).

All 8 S3 envs build. Four new strings in 13 .lang files, English both sides per
4709c81; the audit's 3 remaining gaps are pre-existing on main from the beta_68
SDK work. Not hardware-tested: adding a region is verifiable on-device, but
whether a message then resolves to it needs real scoped traffic from a second
node.

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

deploy/apps/lang/bg.lang

@@ -282,6 +282,7 @@ End time	Краен час
 Enter SSID first	Първо въведете SSID
 Enter a name	Въведете име
 Enter a network name	Въведете име на мрежа
+Enter a region name	Enter a region name
 Enter adds a new line	Enter добавя нов ред
 Enter exactly 32 hex characters.	Въведете точно 32 hex знака.
 Enter key sends message	Клавишът Enter изпраща съобщението
@@ -407,6 +408,7 @@ Keyboard nav: WASDZ on	Клавиатурна навиг.: WASDZ вкл.
 Keyboard nav: off	Клавиатурна навиг.: изкл.
 Keyboard navigation	Навигация с клавиатура
 Keys	
+Known regions	Known regions
 LOS → %s	Пряка видимост → %s
 Landscape (desktop)	Пейзаж (десктоп)
 Landscape set - applies when remote mode starts.	Пейзажът е зададен - прилага се при стартиране на отдалечения режим.
@@ -533,6 +535,7 @@ No networks found (2.4 GHz only)	Няма намерени мрежи (само
 No onboard GPS	Няма вграден GPS
 No other networks found	Не са открити други мрежи
 No position yet. A cold start needs a clear view of the sky and can take several minutes.	Още няма позиция. Студен старт изисква чисто небе и може да отнеме няколко минути.
+No regions yet.\n\nAdd a #region to have messages\nscoped to it named in message details.	No regions yet.\n\nAdd a #region to have messages\nscoped to it named in message details.
 No reply from %s	Няма отговор от %s
 No reply. Check password, server,\nor device clock (device: %s)	Няма отговор. Проверете паролата, сървъра\nили часовника на устройството (устройство: %s)
 No saved map tiles here.\n\nConnect to Wi-Fi (Settings → Wi-Fi)\nto download this area.\nSaved tiles stay available offline.	Тук няма запазени плочки.\n\nСвържете се с Wi-Fi (Настройки → Wi-Fi),\nза да изтеглите този район.\nЗапазените плочки остават достъпни офлайн.
@@ -641,6 +644,7 @@ Receive unreleased test firmware — newer features, but less tested. The update
 Recently heard	Наскоро чути
 Reformat SD as MESHCOMOD (FAT32)?\nALL data on the card will be erased.	Форматиране на SD като MESHCOMOD (FAT32)?\nВСИЧКИ данни на картата ще бъдат изтрити.
 Region & scope	Регион и обхват
+Region list is full	Region list is full
 Region scope (#tag) for this channel.\nBlank = use the default scope.	Регионален обхват (#tag) за този канал.\nПразно = обхват по подразбиране.
 Region scope (#tag), blank = default.	Обхват на регион (#tag), празно = по подразбиране.
 Region scope (#tag, blank = none)	Регионален обхват (#tag, празно = няма)

deploy/apps/lang/de.lang

@@ -282,6 +282,7 @@ End time	Endzeit
 Enter SSID first	Zuerst SSID eingeben
 Enter a name	Namen eingeben
 Enter a network name	Netzwerknamen eingeben
+Enter a region name	Enter a region name
 Enter adds a new line	Enter fügt neue Zeile ein
 Enter exactly 32 hex characters.	Genau 32 Hex-Zeichen eingeben.
 Enter key sends message	Enter-Taste sendet Nachricht
@@ -407,6 +408,7 @@ Keyboard nav: WASDZ on	Tastaturnav.: WASDZ an
 Keyboard nav: off	Tastaturnav.: aus
 Keyboard navigation	Tastaturnavigation
 Keys	Tasten
+Known regions	Known regions
 LOS → %s	Sichtlinie → %s
 Landscape (desktop)	Querformat (Desktop)
 Landscape set - applies when remote mode starts.	Querformat gesetzt - gilt beim Start des Fernmodus.
@@ -533,6 +535,7 @@ No networks found (2.4 GHz only)	Keine Netzwerke gefunden (nur 2,4 GHz)
 No onboard GPS	Kein integriertes GPS
 No other networks found	Keine anderen Netzwerke gefunden
 No position yet. A cold start needs a clear view of the sky and can take several minutes.	Noch keine Position. Ein Kaltstart braucht freie Sicht zum Himmel und kann mehrere Minuten dauern.
+No regions yet.\n\nAdd a #region to have messages\nscoped to it named in message details.	No regions yet.\n\nAdd a #region to have messages\nscoped to it named in message details.
 No reply from %s	Keine Antwort von %s
 No reply. Check password, server,\nor device clock (device: %s)	Keine Antwort. Prüfe Passwort, Server\noder Geräteuhr (Gerät: %s)
 No saved map tiles here.\n\nConnect to Wi-Fi (Settings → Wi-Fi)\nto download this area.\nSaved tiles stay available offline.	Hier keine gespeicherten Kacheln.\n\nMit Wi-Fi verbinden (Einstellungen → Wi-Fi),\num dieses Gebiet zu laden.\nGespeicherte Kacheln bleiben offline verfügbar.
@@ -641,6 +644,7 @@ Receive unreleased test firmware — newer features, but less tested. The update
 Recently heard	Kürzlich gehört
 Reformat SD as MESHCOMOD (FAT32)?\nALL data on the card will be erased.	SD als MESHCOMOD (FAT32) neu formatieren?\nALLE Daten auf der Karte werden gelöscht.
 Region & scope	Region & Reichweite
+Region list is full	Region list is full
 Region scope (#tag) for this channel.\nBlank = use the default scope.	Regionsbereich (#tag) für diesen Kanal.\nLeer = Standardbereich verwenden.
 Region scope (#tag), blank = default.	Regionsbereich (#tag), leer = Standard.
 Region scope (#tag, blank = none)	Regionsbereich (#tag, leer = keiner)

deploy/apps/lang/el.lang

@@ -282,6 +282,7 @@ End time	Ώρα λήξης
 Enter SSID first	Εισαγάγετε πρώτα το SSID
 Enter a name	Εισαγάγετε όνομα
 Enter a network name	Εισαγάγετε όνομα δικτύου
+Enter a region name	Enter a region name
 Enter adds a new line	Το Enter προσθέτει γραμμή
 Enter exactly 32 hex characters.	Εισαγάγετε ακριβώς 32 hex χαρακτήρες.
 Enter key sends message	Το πλήκτρο Enter στέλνει το μήνυμα
@@ -407,6 +408,7 @@ Keyboard nav: WASDZ on	Πλοήγηση πληκτρ.: WASDZ ενεργό
 Keyboard nav: off	Πλοήγηση πληκτρ.: κλειστό
 Keyboard navigation	Πλοήγηση με πληκτρολόγιο
 Keys	
+Known regions	Known regions
 LOS → %s	Οπτική επαφή → %s
 Landscape (desktop)	Οριζόντια (desktop)
 Landscape set - applies when remote mode starts.	Ορίστηκε οριζόντια - ισχύει όταν ξεκινήσει η απομακρυσμένη λειτουργία.
@@ -533,6 +535,7 @@ No networks found (2.4 GHz only)	Δεν βρέθηκαν δίκτυα (μόνο
 No onboard GPS	Χωρίς ενσωματωμένο GPS
 No other networks found	Δεν βρέθηκαν άλλα δίκτυα
 No position yet. A cold start needs a clear view of the sky and can take several minutes.	Δεν υπάρχει ακόμη θέση. Η ψυχρή εκκίνηση θέλει ανοιχτό ουρανό και μπορεί να πάρει λεπτά.
+No regions yet.\n\nAdd a #region to have messages\nscoped to it named in message details.	No regions yet.\n\nAdd a #region to have messages\nscoped to it named in message details.
 No reply from %s	Καμία απάντηση από %s
 No reply. Check password, server,\nor device clock (device: %s)	Καμία απάντηση. Ελέγξτε κωδικό, διακομιστή\nή ρολόι συσκευής (συσκευή: %s)
 No saved map tiles here.\n\nConnect to Wi-Fi (Settings → Wi-Fi)\nto download this area.\nSaved tiles stay available offline.	Δεν υπάρχουν αποθηκευμένα πλακίδια εδώ.\n\nΣυνδεθείτε στο Wi-Fi (Ρυθμίσεις → Wi-Fi)\nγια λήψη αυτής της περιοχής.\nΤα αποθηκευμένα πλακίδια μένουν διαθέσιμα εκτός σύνδεσης.
@@ -641,6 +644,7 @@ Receive unreleased test firmware — newer features, but less tested. The update
 Recently heard	Ακούστηκε πρόσφατα
 Reformat SD as MESHCOMOD (FAT32)?\nALL data on the card will be erased.	Επαναδιαμόρφωση SD ως MESHCOMOD (FAT32);\nΟΛΑ τα δεδομένα στην κάρτα θα διαγραφούν.
 Region & scope	Περιοχή & εμβέλεια
+Region list is full	Region list is full
 Region scope (#tag) for this channel.\nBlank = use the default scope.	Εύρος περιοχής (#tag) για αυτό το κανάλι.\nΚενό = προεπιλεγμένο εύρος.
 Region scope (#tag), blank = default.	Εύρος περιοχής (#tag), κενό = προεπιλογή.
 Region scope (#tag, blank = none)	Εύρος περιοχής (#tag, κενό = κανένα)

deploy/apps/lang/es.lang

@@ -282,6 +282,7 @@ End time	Hora de fin
 Enter SSID first	Introduce primero el SSID
 Enter a name	Introduce un nombre
 Enter a network name	Introduce un nombre de red
+Enter a region name	Enter a region name
 Enter adds a new line	Enter añade una línea
 Enter exactly 32 hex characters.	Introduce exactamente 32 caracteres hex.
 Enter key sends message	La tecla Enter envía el mensaje
@@ -407,6 +408,7 @@ Keyboard nav: WASDZ on	Nav. teclado: WASDZ act.
 Keyboard nav: off	Nav. teclado: desact.
 Keyboard navigation	Navegación por teclado
 Keys	
+Known regions	Known regions
 LOS → %s	Línea de vista → %s
 Landscape (desktop)	Horizontal (escritorio)
 Landscape set - applies when remote mode starts.	Horizontal fijado - se aplica al iniciar el modo remoto.
@@ -533,6 +535,7 @@ No networks found (2.4 GHz only)	No se encontraron redes (solo 2.4 GHz)
 No onboard GPS	Sin GPS integrado
 No other networks found	No se encontraron otras redes
 No position yet. A cold start needs a clear view of the sky and can take several minutes.	Aún sin posición. Un arranque en frío necesita cielo despejado y puede tardar varios minutos.
+No regions yet.\n\nAdd a #region to have messages\nscoped to it named in message details.	No regions yet.\n\nAdd a #region to have messages\nscoped to it named in message details.
 No reply from %s	Sin respuesta de %s
 No reply. Check password, server,\nor device clock (device: %s)	Sin respuesta. Revisa contraseña, servidor\no reloj del dispositivo (dispositivo: %s)
 No saved map tiles here.\n\nConnect to Wi-Fi (Settings → Wi-Fi)\nto download this area.\nSaved tiles stay available offline.	No hay teselas guardadas aquí.\n\nConéctate a Wi-Fi (Ajustes → Wi-Fi)\npara descargar esta zona.\nLas teselas guardadas quedan disponibles sin conexión.
@@ -641,6 +644,7 @@ Receive unreleased test firmware — newer features, but less tested. The update
 Recently heard	Escuchado hace poco
 Reformat SD as MESHCOMOD (FAT32)?\nALL data on the card will be erased.	¿Reformatear la SD como MESHCOMOD (FAT32)?\nSe borrarán TODOS los datos de la tarjeta.
 Region & scope	Región y alcance
+Region list is full	Region list is full
 Region scope (#tag) for this channel.\nBlank = use the default scope.	Alcance de región (#tag) para este canal.\nVacío = alcance predeterminado.
 Region scope (#tag), blank = default.	Ámbito de región (#tag), vacío = predeterminado.
 Region scope (#tag, blank = none)	Alcance de región (#tag, vacío = ninguno)

deploy/apps/lang/fr.lang

@@ -282,6 +282,7 @@ End time	Heure de fin
 Enter SSID first	Saisissez d'abord le SSID
 Enter a name	Saisissez un nom
 Enter a network name	Saisir un nom de réseau
+Enter a region name	Enter a region name
 Enter adds a new line	Entrée ajoute une ligne
 Enter exactly 32 hex characters.	Saisissez exactement 32 caractères hex.
 Enter key sends message	La touche Entrée envoie le message
@@ -407,6 +408,7 @@ Keyboard nav: WASDZ on	Nav. clavier : WASDZ activé
 Keyboard nav: off	Nav. clavier : désactivé
 Keyboard navigation	Navigation clavier
 Keys	
+Known regions	Known regions
 LOS → %s	Vue directe → %s
 Landscape (desktop)	Paysage (bureau)
 Landscape set - applies when remote mode starts.	Paysage défini - s'applique au démarrage du mode distant.
@@ -533,6 +535,7 @@ No networks found (2.4 GHz only)	Aucun réseau trouvé (2,4 GHz uniquement)
 No onboard GPS	Pas de GPS intégré
 No other networks found	Aucun autre réseau trouvé
 No position yet. A cold start needs a clear view of the sky and can take several minutes.	Pas encore de position. Un démarrage à froid demande un ciel dégagé et peut prendre plusieurs minutes.
+No regions yet.\n\nAdd a #region to have messages\nscoped to it named in message details.	No regions yet.\n\nAdd a #region to have messages\nscoped to it named in message details.
 No reply from %s	Pas de réponse de %s
 No reply. Check password, server,\nor device clock (device: %s)	Pas de réponse. Vérifiez mot de passe, serveur\nou horloge de l'appareil (appareil : %s)
 No saved map tiles here.\n\nConnect to Wi-Fi (Settings → Wi-Fi)\nto download this area.\nSaved tiles stay available offline.	Aucune tuile enregistrée ici.\n\nConnectez-vous au Wi-Fi (Réglages → Wi-Fi)\npour télécharger cette zone.\nLes tuiles enregistrées restent hors ligne.
@@ -641,6 +644,7 @@ Receive unreleased test firmware — newer features, but less tested. The update
 Recently heard	Entendu récemment
 Reformat SD as MESHCOMOD (FAT32)?\nALL data on the card will be erased.	Reformater la SD en MESHCOMOD (FAT32) ?\nTOUTES les données de la carte seront effacées.
 Region & scope	Région et portée
+Region list is full	Region list is full
 Region scope (#tag) for this channel.\nBlank = use the default scope.	Portée régionale (#tag) pour ce canal.\nVide = portée par défaut.
 Region scope (#tag), blank = default.	Portée de région (#tag), vide = défaut.
 Region scope (#tag, blank = none)	Portée régionale (#tag, vide = aucune)

deploy/apps/lang/hu.lang

@@ -286,6 +286,7 @@ End time	Befejezés
 Enter SSID first	Először adja meg az SSID-t
 Enter a name	Írjon be egy nevet
 Enter a network name	Adjon meg egy hálózatnevet
+Enter a region name	Enter a region name
 Enter adds a new line	Az Enter új sort ad hozzá
 Enter exactly 32 hex characters.	Pontosan 32 hex karaktert adjon meg.
 Enter key sends message	Az Enter billentyű elküldi az üzenetet
@@ -412,6 +413,7 @@ Keyboard nav: WASDZ on	Billentyűzet navigáció: WASDZ bekapcsolva
 Keyboard nav: off	Billentyűzetnavigáció: kikapcsolva
 Keyboard navigation	Billentyűzetnavigáció
 Keys	Kulcsok
+Known regions	Known regions
 LOS → %s	Rálátás → %s
 Landscape (desktop)	Fekvő (asztali)
 Landscape set - applies when remote mode starts.	Fekvő beállítva - a távoli mód indulásakor lép életbe.
@@ -539,6 +541,7 @@ No networks found (2.4 GHz only)	Nem található hálózat (csak 2,4 GHz)
 No onboard GPS	Nincs beépített GPS
 No other networks found	Nem található más hálózat
 No position yet. A cold start needs a clear view of the sky and can take several minutes.	Még nincs pozíció. A hidegindításhoz szabad égbolt kell, és több percig is tarthat.
+No regions yet.\n\nAdd a #region to have messages\nscoped to it named in message details.	No regions yet.\n\nAdd a #region to have messages\nscoped to it named in message details.
 No reply from %s	Nincs válasz %s-tól
 No reply. Check password, server,\nor device clock (device: %s)	Nincs válasz. Ellenőrizze a jelszót, a szervert,\nvagy az eszköz óráját (eszköz: %s)
 No saved map tiles here.\n\nConnect to Wi-Fi (Settings → Wi-Fi)\nto download this area.\nSaved tiles stay available offline.	Nincsenek mentett térképszeletek. \n\nCsatlakozzon Wi-Fi-hez (Beállítások → Wi-Fi) a terület letöltéséhez.\nA mentett szeletek offline is elérhetők maradnak.
@@ -649,6 +652,7 @@ Receive unreleased test firmware — newer features, but less tested. The update
 Recently heard	Nemrég hallottam
 Reformat SD as MESHCOMOD (FAT32)?\nALL data on the card will be erased.	Újraformázza az SD kártyát MESHCOMOD (FAT32) formátumban?\nA kártyán lévő ÖSSZES adat törlődik.
 Region & scope	Régió és hatókör
+Region list is full	Region list is full
 Region scope (#tag) for this channel.\nBlank = use the default scope.	Régió hatóköre (#tag) ehhez a csatornához.\nÜres = az alapértelmezett hatókör használata.
 Region scope (#tag), blank = default.	Régió hatóköre (#tag), üres = alapértelmezett.
 Region scope (#tag, blank = none)	Régió hatóköre (#címke, üres = nincs)

deploy/apps/lang/it.lang

@@ -282,6 +282,7 @@ End time	Ora di fine
 Enter SSID first	Inserisci prima l'SSID
 Enter a name	Inserisci un nome
 Enter a network name	Inserisci un nome di rete
+Enter a region name	Enter a region name
 Enter adds a new line	Invio aggiunge una riga
 Enter exactly 32 hex characters.	Inserisci esattamente 32 caratteri hex.
 Enter key sends message	Il tasto Invio invia il messaggio
@@ -407,6 +408,7 @@ Keyboard nav: WASDZ on	Nav. tastiera: WASDZ on
 Keyboard nav: off	Nav. tastiera: off
 Keyboard navigation	Navigazione da tastiera
 Keys	
+Known regions	Known regions
 LOS → %s	Vista diretta → %s
 Landscape (desktop)	Orizzontale (desktop)
 Landscape set - applies when remote mode starts.	Orizzontale impostato - vale all'avvio della modalità remota.
@@ -533,6 +535,7 @@ No networks found (2.4 GHz only)	Nessuna rete trovata (solo 2.4 GHz)
 No onboard GPS	Nessun GPS integrato
 No other networks found	Nessun'altra rete trovata
 No position yet. A cold start needs a clear view of the sky and can take several minutes.	Ancora nessuna posizione. Un avvio a freddo richiede cielo libero e può durare diversi minuti.
+No regions yet.\n\nAdd a #region to have messages\nscoped to it named in message details.	No regions yet.\n\nAdd a #region to have messages\nscoped to it named in message details.
 No reply from %s	Nessuna risposta da %s
 No reply. Check password, server,\nor device clock (device: %s)	Nessuna risposta. Controlla password, server\no orologio del dispositivo (dispositivo: %s)
 No saved map tiles here.\n\nConnect to Wi-Fi (Settings → Wi-Fi)\nto download this area.\nSaved tiles stay available offline.	Nessuna tessera salvata qui.\n\nConnettiti al Wi-Fi (Impostazioni → Wi-Fi)\nper scaricare quest'area.\nLe tessere salvate restano disponibili offline.
@@ -641,6 +644,7 @@ Receive unreleased test firmware — newer features, but less tested. The update
 Recently heard	Sentito di recente
 Reformat SD as MESHCOMOD (FAT32)?\nALL data on the card will be erased.	Riformattare la SD come MESHCOMOD (FAT32)?\nTUTTI i dati sulla scheda saranno cancellati.
 Region & scope	Regione e ambito
+Region list is full	Region list is full
 Region scope (#tag) for this channel.\nBlank = use the default scope.	Ambito regione (#tag) per questo canale.\nVuoto = ambito predefinito.
 Region scope (#tag), blank = default.	Ambito regione (#tag), vuoto = predefinito.
 Region scope (#tag, blank = none)	Ambito regione (#tag, vuoto = nessuno)

deploy/apps/lang/nl.lang

@@ -282,6 +282,7 @@ End time	Eindtijd
 Enter SSID first	Voer eerst SSID in
 Enter a name	Voer een naam in
 Enter a network name	Voer een netwerknaam in
+Enter a region name	Enter a region name
 Enter adds a new line	Enter voegt een nieuwe regel toe
 Enter exactly 32 hex characters.	Voer precies 32 hex-tekens in.
 Enter key sends message	Enter verstuurt bericht
@@ -407,6 +408,7 @@ Keyboard nav: WASDZ on	Toetsenbordnav.: WASDZ aan
 Keyboard nav: off	Toetsenbordnav.: uit
 Keyboard navigation	Toetsenbordnavigatie
 Keys	Toetsen
+Known regions	Known regions
 LOS → %s	Zichtlijn → %s
 Landscape (desktop)	Liggend (desktop)
 Landscape set - applies when remote mode starts.	Liggend ingesteld - geldt zodra de externe modus start.
@@ -533,6 +535,7 @@ No networks found (2.4 GHz only)	Geen netwerken gevonden (alleen 2.4 GHz)
 No onboard GPS	Geen ingebouwde GPS
 No other networks found	Geen andere netwerken gevonden
 No position yet. A cold start needs a clear view of the sky and can take several minutes.	Nog geen positie. Een koude start heeft vrij zicht op de lucht nodig en kan enkele minuten duren.
+No regions yet.\n\nAdd a #region to have messages\nscoped to it named in message details.	No regions yet.\n\nAdd a #region to have messages\nscoped to it named in message details.
 No reply from %s	Geen antwoord van %s
 No reply. Check password, server,\nor device clock (device: %s)	Geen antwoord. Controleer wachtwoord, server,\nof apparaatklok (apparaat: %s)
 No saved map tiles here.\n\nConnect to Wi-Fi (Settings → Wi-Fi)\nto download this area.\nSaved tiles stay available offline.	Hier geen opgeslagen kaarttegels.\n\nMaak verbinding met Wi-Fi (Instellingen → Wi-Fi)\nom dit gebied te downloaden.\nOpgeslagen tegels blijven offline beschikbaar.
@@ -641,6 +644,7 @@ Receive unreleased test firmware — newer features, but less tested. The update
 Recently heard	Recent gehoord
 Reformat SD as MESHCOMOD (FAT32)?\nALL data on the card will be erased.	SD herformatteren als MESHCOMOD (FAT32)?\nALLE data op de kaart wordt gewist.
 Region & scope	Regio en bereik
+Region list is full	Region list is full
 Region scope (#tag) for this channel.\nBlank = use the default scope.	Regiobereik (#tag) voor dit kanaal.\nLeeg = standaardbereik gebruiken.
 Region scope (#tag), blank = default.	Regiobereik (#tag), leeg = standaard.
 Region scope (#tag, blank = none)	Regiobereik (#tag, leeg = geen)

deploy/apps/lang/pt-br.lang

@@ -282,6 +282,7 @@ End time	Hora de término
 Enter SSID first	Digite o SSID primeiro
 Enter a name	Digite um nome
 Enter a network name	Digite um nome de rede
+Enter a region name	Enter a region name
 Enter adds a new line	Enter adiciona uma linha
 Enter exactly 32 hex characters.	Digite exatamente 32 caracteres hex.
 Enter key sends message	A tecla Enter envia a mensagem
@@ -407,6 +408,7 @@ Keyboard nav: WASDZ on	Nav. teclado: WASDZ ligado
 Keyboard nav: off	Nav. teclado: desligado
 Keyboard navigation	Navegação por teclado
 Keys	
+Known regions	Known regions
 LOS → %s	Linha de visada → %s
 Landscape (desktop)	Paisagem (desktop)
 Landscape set - applies when remote mode starts.	Paisagem definida - vale quando o modo remoto iniciar.
@@ -533,6 +535,7 @@ No networks found (2.4 GHz only)	Nenhuma rede encontrada (só 2.4 GHz)
 No onboard GPS	Sem GPS integrado
 No other networks found	Nenhuma outra rede encontrada
 No position yet. A cold start needs a clear view of the sky and can take several minutes.	Ainda sem posição. Uma partida a frio precisa de céu aberto e pode levar vários minutos.
+No regions yet.\n\nAdd a #region to have messages\nscoped to it named in message details.	No regions yet.\n\nAdd a #region to have messages\nscoped to it named in message details.
 No reply from %s	Sem resposta de %s
 No reply. Check password, server,\nor device clock (device: %s)	Sem resposta. Verifique senha, servidor\nou relógio do dispositivo (dispositivo: %s)
 No saved map tiles here.\n\nConnect to Wi-Fi (Settings → Wi-Fi)\nto download this area.\nSaved tiles stay available offline.	Sem blocos salvos aqui.\n\nConecte-se ao Wi-Fi (Ajustes → Wi-Fi)\npara baixar esta área.\nOs blocos salvos ficam disponíveis offline.
@@ -641,6 +644,7 @@ Receive unreleased test firmware — newer features, but less tested. The update
 Recently heard	Ouvido recentemente
 Reformat SD as MESHCOMOD (FAT32)?\nALL data on the card will be erased.	Reformatar o SD como MESHCOMOD (FAT32)?\nTODOS os dados do cartão serão apagados.
 Region & scope	Região e alcance
+Region list is full	Region list is full
 Region scope (#tag) for this channel.\nBlank = use the default scope.	Escopo de região (#tag) para este canal.\nVazio = usar o escopo padrão.
 Region scope (#tag), blank = default.	Escopo da região (#tag), vazio = padrão.
 Region scope (#tag, blank = none)	Escopo de região (#tag, vazio = nenhum)

deploy/apps/lang/ro.lang

@@ -282,6 +282,7 @@ End time	Ora de sfârşit
 Enter SSID first	Introdu mai întâi SSID-ul
 Enter a name	Introdu un nume
 Enter a network name	Introdu un nume de reţea
+Enter a region name	Enter a region name
 Enter adds a new line	Enter adaugă un rând nou
 Enter exactly 32 hex characters.	Introdu exact 32 caractere hex.
 Enter key sends message	Tasta Enter trimite mesajul
@@ -407,6 +408,7 @@ Keyboard nav: WASDZ on	Navigare tastatură: WASDZ pornit
 Keyboard nav: off	Navigare tastatură: oprită
 Keyboard navigation	Navigare cu tastatura
 Keys	
+Known regions	Known regions
 LOS → %s	Linie vizuală → %s
 Landscape (desktop)	Peisaj (desktop)
 Landscape set - applies when remote mode starts.	Peisaj setat - se aplică la pornirea modului la distanţă.
@@ -533,6 +535,7 @@ No networks found (2.4 GHz only)	Nicio reţea găsită (doar 2,4 GHz)
 No onboard GPS	Fără GPS integrat
 No other networks found	Nicio altă reţea găsită
 No position yet. A cold start needs a clear view of the sky and can take several minutes.	Încă nicio poziţie. O pornire la rece are nevoie de cer liber şi poate dura câteva minute.
+No regions yet.\n\nAdd a #region to have messages\nscoped to it named in message details.	No regions yet.\n\nAdd a #region to have messages\nscoped to it named in message details.
 No reply from %s	Niciun răspuns de la %s
 No reply. Check password, server,\nor device clock (device: %s)	Niciun răspuns. Verifică parola, serverul\nsau ceasul dispozitivului (dispozitiv: %s)
 No saved map tiles here.\n\nConnect to Wi-Fi (Settings → Wi-Fi)\nto download this area.\nSaved tiles stay available offline.	Fără dale salvate aici.\n\nConectează Wi-Fi (Setări → Wi-Fi)\npentru a descărca zona.\nDalele salvate rămân offline.
@@ -641,6 +644,7 @@ Receive unreleased test firmware — newer features, but less tested. The update
 Recently heard	Auzite recent
 Reformat SD as MESHCOMOD (FAT32)?\nALL data on the card will be erased.	Reformatezi SD ca MESHCOMOD (FAT32)?\nTOATE datele de pe card vor fi şterse.
 Region & scope	Regiune şi acoperire
+Region list is full	Region list is full
 Region scope (#tag) for this channel.\nBlank = use the default scope.	Domeniu regional (#tag) pentru acest canal.\nGol = domeniul implicit.
 Region scope (#tag), blank = default.	Domeniu regional (#tag), gol = implicit.
 Region scope (#tag, blank = none)	Domeniu regional (#tag, gol = niciunul)

deploy/apps/lang/ru.lang

@@ -282,6 +282,7 @@ End time	Время окончания
 Enter SSID first	Сначала введите SSID
 Enter a name	Введите имя
 Enter a network name	Введите имя сети
+Enter a region name	Enter a region name
 Enter adds a new line	Enter добавляет строку
 Enter exactly 32 hex characters.	Введите ровно 32 hex-символа.
 Enter key sends message	Клавиша Enter отправляет сообщение
@@ -407,6 +408,7 @@ Keyboard nav: WASDZ on	Навигация клавиатурой: WASDZ вкл.
 Keyboard nav: off	Навигация клавиатурой: выкл.
 Keyboard navigation	Навигация клавиатурой
 Keys	
+Known regions	Known regions
 LOS → %s	Прямая видимость → %s
 Landscape (desktop)	Альбомная (десктоп)
 Landscape set - applies when remote mode starts.	Альбомная выбрана - применится при запуске удалённого режима.
@@ -533,6 +535,7 @@ No networks found (2.4 GHz only)	Сети не найдены (только 2.4
 No onboard GPS	Нет встроенного GPS
 No other networks found	Другие сети не найдены
 No position yet. A cold start needs a clear view of the sky and can take several minutes.	Позиции пока нет. Холодный старт требует открытого неба и может занять несколько минут.
+No regions yet.\n\nAdd a #region to have messages\nscoped to it named in message details.	No regions yet.\n\nAdd a #region to have messages\nscoped to it named in message details.
 No reply from %s	Нет ответа от %s
 No reply. Check password, server,\nor device clock (device: %s)	Нет ответа. Проверьте пароль, сервер\nили часы устройства (устройство: %s)
 No saved map tiles here.\n\nConnect to Wi-Fi (Settings → Wi-Fi)\nto download this area.\nSaved tiles stay available offline.	Здесь нет сохранённых тайлов.\n\nПодключитесь к Wi-Fi (Настройки → Wi-Fi),\nчтобы загрузить этот район.\nСохранённые тайлы остаются доступны офлайн.
@@ -641,6 +644,7 @@ Receive unreleased test firmware — newer features, but less tested. The update
 Recently heard	Недавно слышно
 Reformat SD as MESHCOMOD (FAT32)?\nALL data on the card will be erased.	Отформатировать SD как MESHCOMOD (FAT32)?\nВСЕ данные на карте будут стёрты.
 Region & scope	Регион и охват
+Region list is full	Region list is full
 Region scope (#tag) for this channel.\nBlank = use the default scope.	Регион (#tag) для этого канала.\nПусто = область по умолчанию.
 Region scope (#tag), blank = default.	Область региона (#tag), пусто = по умолчанию.
 Region scope (#tag, blank = none)	Регион (#tag, пусто = нет)

deploy/apps/lang/sr.lang

@@ -282,6 +282,7 @@ End time	Време краја
 Enter SSID first	Прво унесите SSID
 Enter a name	Унесите име
 Enter a network name	Унесите име мреже
+Enter a region name	Enter a region name
 Enter adds a new line	Enter додаје нови ред
 Enter exactly 32 hex characters.	Унесите тачно 32 hex знака.
 Enter key sends message	Тастер Enter шаље поруку
@@ -407,6 +408,7 @@ Keyboard nav: WASDZ on	Навиг. тастатуром: WASDZ укљ.
 Keyboard nav: off	Навиг. тастатуром: искљ.
 Keyboard navigation	Навигација тастатуром
 Keys	
+Known regions	Known regions
 LOS → %s	Оптичка видљивост → %s
 Landscape (desktop)	Положено (десктоп)
 Landscape set - applies when remote mode starts.	Положено подешено - важи кад крене даљински режим.
@@ -533,6 +535,7 @@ No networks found (2.4 GHz only)	Нема мрежа (само 2.4 GHz)
 No onboard GPS	Нема уграђеног GPS
 No other networks found	Нема других мрежа
 No position yet. A cold start needs a clear view of the sky and can take several minutes.	Још нема позиције. Хладан старт тражи чист поглед на небо и може да потраје неколико минута.
+No regions yet.\n\nAdd a #region to have messages\nscoped to it named in message details.	No regions yet.\n\nAdd a #region to have messages\nscoped to it named in message details.
 No reply from %s	Нема одговора од %s
 No reply. Check password, server,\nor device clock (device: %s)	Нема одговора. Проверите лозинку, сервер\nили сат уређаја (уређај: %s)
 No saved map tiles here.\n\nConnect to Wi-Fi (Settings → Wi-Fi)\nto download this area.\nSaved tiles stay available offline.	Овде нема сачуваних плочица.\n\nПовежите се на Wi-Fi (Подешавања → Wi-Fi)\nда преузмете ову област.\nСачуване плочице остају доступне ван мреже.
@@ -641,6 +644,7 @@ Receive unreleased test firmware — newer features, but less tested. The update
 Recently heard	Недавно чути
 Reformat SD as MESHCOMOD (FAT32)?\nALL data on the card will be erased.	Форматирати SD као MESHCOMOD (FAT32)?\nСВИ подаци на картици биће обрисани.
 Region & scope	Регион и опсег
+Region list is full	Region list is full
 Region scope (#tag) for this channel.\nBlank = use the default scope.	Опсег региона (#tag) за овај канал.\nПразно = подразумевани опсег.
 Region scope (#tag), blank = default.	Опсег региона (#tag), празно = подразумевано.
 Region scope (#tag, blank = none)	Опсег региона (#tag, празно = ниједан)

deploy/apps/lang/uk.lang

@@ -282,6 +282,7 @@ End time	Час завершення
 Enter SSID first	Спочатку введіть SSID
 Enter a name	Введіть ім'я
 Enter a network name	Введіть назву мережі
+Enter a region name	Enter a region name
 Enter adds a new line	Enter додає новий рядок
 Enter exactly 32 hex characters.	Введіть рівно 32 hex-символи.
 Enter key sends message	Клавіша Enter надсилає повідомлення
@@ -407,6 +408,7 @@ Keyboard nav: WASDZ on	Навігація клавіатурою: WASDZ увім
 Keyboard nav: off	Навігація клавіатурою: вимк.
 Keyboard navigation	Навігація клавіатурою
 Keys	
+Known regions	Known regions
 LOS → %s	Пряма видимість → %s
 Landscape (desktop)	Альбомна (десктоп)
 Landscape set - applies when remote mode starts.	Альбомну вибрано - застосується під час запуску віддаленого режиму.
@@ -533,6 +535,7 @@ No networks found (2.4 GHz only)	Мережі не знайдено (лише 2.
 No onboard GPS	Немає вбудованого GPS
 No other networks found	Інших мереж не знайдено
 No position yet. A cold start needs a clear view of the sky and can take several minutes.	Позиції ще немає. Холодний старт потребує відкритого неба і може тривати кілька хвилин.
+No regions yet.\n\nAdd a #region to have messages\nscoped to it named in message details.	No regions yet.\n\nAdd a #region to have messages\nscoped to it named in message details.
 No reply from %s	Немає відповіді від %s
 No reply. Check password, server,\nor device clock (device: %s)	Немає відповіді. Перевірте пароль, сервер\nабо годинник пристрою (пристрій: %s)
 No saved map tiles here.\n\nConnect to Wi-Fi (Settings → Wi-Fi)\nto download this area.\nSaved tiles stay available offline.	Тут немає збережених плиток.\n\nПідключіться до Wi-Fi (Налаштування → Wi-Fi),\nщоб завантажити цю ділянку.\nЗбережені плитки лишаються доступні офлайн.
@@ -641,6 +644,7 @@ Receive unreleased test firmware — newer features, but less tested. The update
 Recently heard	Нещодавно чуто
 Reformat SD as MESHCOMOD (FAT32)?\nALL data on the card will be erased.	Переформатувати SD як MESHCOMOD (FAT32)?\nУСІ дані на картці будуть стерті.
 Region & scope	Регіон і охоплення
+Region list is full	Region list is full
 Region scope (#tag) for this channel.\nBlank = use the default scope.	Регіон (#tag) для цього каналу.\nПорожньо = область за умовчанням.
 Region scope (#tag), blank = default.	Область регіону (#tag), порожньо = за замовчуванням.
 Region scope (#tag, blank = none)	Регіон (#tag, порожньо = немає)

src/RegionRegistry.h

@@ -49,13 +49,20 @@
 
 #define REGION_REG_MAP_PATH   "/region_map.dat"
 #define REGION_REG_SLOT_PATH  "/region_slots.dat"
-#define REGION_REG_SLOT_MAGIC 0x52475331UL   // "RGS1"
+#define REGION_REG_SLOT_MAGIC 0x52475331UL   // "RGS1" — slots only
+#define REGION_REG_SLOT_MAGIC2 0x52475332UL  // "RGS2" — slots + active mask
 
 class RegionRegistry {
   TransportKeyStore _keys;
   RegionMap         _map;
   // index = slot (1..REGION_SLOT_MAX); value = RegionEntry::id, 0 = free.
+  // A slot binding is PERMANENT once assigned. Removing a region clears its bit
+  // in _slot_active -- it stops being matched at RX -- but the binding stays, so
+  // messages received while it WAS registered still resolve to the right name.
+  // Freeing the slot for reuse would silently relabel that history, which is the
+  // failure #271 explicitly warns about.
   uint16_t          _slot_id[REGION_SLOT_MAX + 1];
+  uint16_t          _slot_active = 0;   // bit (slot-1) set => participates in matching
   FILESYSTEM*       _fs = nullptr;
   bool              _ready = false;
 
@@ -80,14 +87,23 @@ class RegionRegistry {
 
   void loadSlots() {
     memset(_slot_id, 0, sizeof _slot_id);
+    _slot_active = 0;
     if (!_fs) return;
     File f = _fs->open(REGION_REG_SLOT_PATH, "r");
     if (!f) return;
     uint32_t magic = 0;
-    if (f.read((uint8_t*)&magic, sizeof magic) == (int)sizeof magic && magic == REGION_REG_SLOT_MAGIC)
+    if (f.read((uint8_t*)&magic, sizeof magic) == (int)sizeof magic
+        && (magic == REGION_REG_SLOT_MAGIC || magic == REGION_REG_SLOT_MAGIC2)) {
       f.read((uint8_t*)_slot_id, sizeof _slot_id);
-    else
+      if (magic == REGION_REG_SLOT_MAGIC2) {
+        f.read((uint8_t*)&_slot_active, sizeof _slot_active);
+      } else {
+        for (uint8_t s = 1; s <= REGION_SLOT_MAX; ++s)   // pre-mask file: all assigned slots were live
+          if (_slot_id[s]) _slot_active |= (uint16_t)(1u << (s - 1));
+      }
+    } else {
       memset(_slot_id, 0, sizeof _slot_id);
+    }
     f.close();
   }
 
@@ -109,9 +125,10 @@ public:
     _map.save(_fs, REGION_REG_MAP_PATH);
     File f = _fs->open(REGION_REG_SLOT_PATH, "w");
     if (!f) return;
-    const uint32_t magic = REGION_REG_SLOT_MAGIC;
+    const uint32_t magic = REGION_REG_SLOT_MAGIC2;
     f.write((const uint8_t*)&magic, sizeof magic);
     f.write((const uint8_t*)_slot_id, sizeof _slot_id);
+    f.write((const uint8_t*)&_slot_active, sizeof _slot_active);
     f.close();
   }
 
@@ -127,10 +144,22 @@ public:
     if (!e) e = _map.putRegion(tag, 0);
     if (!e) return REGION_SLOT_NONE;
 
-    for (uint8_t s = 1; s <= REGION_SLOT_MAX; ++s)          // already slotted?
-      if (_slot_id[s] == e->id) return s;
+    for (uint8_t s = 1; s <= REGION_SLOT_MAX; ++s) {       // already slotted?
+      if (_slot_id[s] == e->id) {
+        // Re-adding a retired region revives its ORIGINAL slot rather than
+        // taking a new one, so its old messages and its new ones stay one region.
+        _slot_active |= (uint16_t)(1u << (s - 1));
+        save();
+        return s;
+      }
+    }
     for (uint8_t s = 1; s <= REGION_SLOT_MAX; ++s) {        // take the first free
-      if (_slot_id[s] == 0) { _slot_id[s] = e->id; save(); return s; }
+      if (_slot_id[s] == 0) {
+        _slot_id[s] = e->id;
+        _slot_active |= (uint16_t)(1u << (s - 1));
+        save();
+        return s;
+      }
     }
     return REGION_SLOT_NONE;   // full: the message records "unknown", never a wrong name
   }
@@ -144,7 +173,8 @@ public:
     uint8_t  hit = REGION_SLOT_NONE;
     uint8_t  n   = 0;
     for (uint8_t s = 1; s <= REGION_SLOT_MAX; ++s) {
-      if (_slot_id[s] == 0) continue;
+      if (_slot_id[s] == 0 || !isActive(s)) continue;   // retired regions keep their
+                                                       // name for history, but stop matching
       RegionEntry* e = const_cast<RegionMap&>(_map).findById(_slot_id[s]);
       if (!e) continue;
       TransportKey keys[4];
@@ -170,9 +200,34 @@ public:
     return (e && e->name[0]) ? e->name : nullptr;
   }
 
+  /** True when this slot currently takes part in matching. A retired slot still
+   *  resolves via nameForSlot() so old messages keep their region name. */
+  bool isActive(uint8_t slot) const {
+    if (slot == REGION_SLOT_NONE || slot > REGION_SLOT_MAX) return false;
+    return (_slot_active & (uint16_t)(1u << (slot - 1))) != 0;
+  }
+
+  /** Stop matching this region. The slot binding and name are KEPT on purpose --
+   *  see the note on _slot_id. Returns false if the slot was never assigned. */
+  bool retire(uint8_t slot) {
+    if (!_ready || slot == REGION_SLOT_NONE || slot > REGION_SLOT_MAX) return false;
+    if (_slot_id[slot] == 0) return false;
+    _slot_active &= (uint16_t)~(1u << (slot - 1));
+    save();
+    return true;
+  }
+
+  /** Live regions (what the user sees as "the list"). */
   int count() const {
     int n = 0;
-    for (uint8_t s = 1; s <= REGION_SLOT_MAX; ++s) if (_slot_id[s]) n++;
+    for (uint8_t s = 1; s <= REGION_SLOT_MAX; ++s) if (_slot_id[s] && isActive(s)) n++;
     return n;
   }
+
+  /** True when every slot is assigned, so no NEW region can be added. Retired
+   *  slots still count: their bindings are permanent. */
+  bool isFull() const {
+    for (uint8_t s = 1; s <= REGION_SLOT_MAX; ++s) if (_slot_id[s] == 0) return false;
+    return true;
+  }
 };

src/ui-touch/UITask.cpp

@@ -4829,6 +4829,7 @@ static void chanScopeClose();    // fwd
 static bool blockedModalIsOpen();// fwd: the bar's Back chevron also closes the blocked-users sheet
 static void blockedModalClose(); // fwd
 static void openBlockedUsersModal();                            // ignore-list manager (unblock)
+static void openRegionsModal();                                 // known-regions manager (#271)
 static bool overlayBlocksTabSwipe();   // theme/channel-scope pickers swallow tab swipes
 static bool drawerPopupOpen();         // popups floating over the app drawer (signal/mentions/power/files)
 static void refreshContactsList();
@@ -10600,6 +10601,25 @@ static void buildRadioSettings() {
     lv_obj_update_layout(note);
     y += lv_obj_get_height(note) + SC(8);
   }
+  // #271: the regions above are the ones we SEND under. This opens the list of
+  // regions we can RECOGNISE — naming them in message details needs only the
+  // name, since the key is derived from it.
+  {
+    lv_obj_t* rb = lv_btn_create(body);
+    lv_obj_set_size(rb, s_settings_content_w - SC(4), SC(34));
+    lv_obj_set_pos(rb, 2, y);
+    styleButton(rb);
+    lv_obj_add_event_cb(rb, [](lv_event_t* e) {
+      if (lv_event_get_code(e) != LV_EVENT_CLICKED) return;
+      closeSettingsModal();
+      openRegionsModal();
+    }, LV_EVENT_CLICKED, nullptr);
+    lv_obj_t* rl = lv_label_create(rb);
+    lv_label_set_text(rl, TR(LV_SYMBOL_LIST "  Known regions"));
+    lv_obj_set_style_text_font(rl, &g_font_14, LV_PART_MAIN);
+    lv_obj_center(rl);
+    y += SC(40);
+  }
 
   // Opt-in: also scope DIRECT messages / logins / remote-management floods to the region
   // (not just channels). For networks where your only repeater re-floods a single region.
@@ -44094,6 +44114,143 @@ static void blockedUnblockNameCb(lv_event_t* e) {
   }
   openBlockedUsersModal();   // rebuild the list
 }
+// ---- Known regions manager (#271) -------------------------------------------
+// The list that makes scope naming possible. A region's key is derived from its
+// NAME (SHA256("#tag")), so holding the name is enough to recompute an incoming
+// packet's transport code and recognise it -- which is why adding a region here
+// names its traffic even though we do not participate in it.
+//
+// Adding is the whole point of the feature; removing is deliberately "retire":
+// the slot and name are kept so messages already received under that region keep
+// resolving, it just stops being matched from now on. See RegionRegistry.
+static lv_obj_t* s_regions_modal = nullptr;
+static lv_obj_t* s_regions_ta    = nullptr;
+static void openRegionsModal();   // fwd: the add/remove callbacks rebuild the page
+
+static void regionsModalClose() {
+  if (s_regions_modal) { hideKb(); popupClose(&s_regions_modal); }
+  s_regions_ta = nullptr;
+  if (s_apppage_close == regionsModalClose) {
+    s_apppage_title = nullptr; s_apppage_close = nullptr;
+    statusBarSetTall(false); updateGlobalStatusBar();
+  }
+}
+static void regionsAddCb(lv_event_t* e) {
+  if (lv_event_get_code(e) != LV_EVENT_CLICKED) return;
+  if (!s_regions_ta) return;
+  const char* t = lv_textarea_get_text(s_regions_ta);
+  if (!t || !t[0]) { if (g_lv.task) g_lv.task->showAlert(TR("Enter a region name"), 1400); return; }
+  RegionRegistry& reg = the_mesh.regionRegistry();
+  if (reg.ensureRegion(t) == REGION_SLOT_NONE) {
+    // Two different failures, and the user can only act on one of them: the list
+    // being full, or the name canonicalising away to nothing (blank, or a bare
+    // "#"). Say which rather than silently not adding a row.
+    if (g_lv.task) g_lv.task->showAlert(reg.isFull() ? TR("Region list is full")
+                                                     : TR("Enter a region name"), 2000);
+    return;
+  }
+  openRegionsModal();   // rebuild (closes first)
+}
+static void regionsRemoveCb(lv_event_t* e) {
+  if (lv_event_get_code(e) != LV_EVENT_CLICKED) return;
+  const uint8_t slot = (uint8_t)(intptr_t)lv_event_get_user_data(e);
+  the_mesh.regionRegistry().retire(slot);
+  openRegionsModal();   // rebuild
+}
+
+static void openRegionsModal() {
+  regionsModalClose();
+  const lv_coord_t sw = lv_disp_get_hor_res(nullptr);
+  const lv_coord_t sh = lv_disp_get_ver_res(nullptr);
+  s_regions_modal = lv_obj_create(lv_layer_top());
+  lv_obj_remove_style_all(s_regions_modal);
+  lv_obj_set_size(s_regions_modal, sw, sh - chatBarH());
+  lv_obj_set_pos(s_regions_modal, 0, chatBarH());
+  lv_obj_set_style_bg_color(s_regions_modal, lv_color_hex(COLOR_BG), LV_PART_MAIN);
+  lv_obj_set_style_bg_opa(s_regions_modal, LV_OPA_COVER, LV_PART_MAIN);
+  lv_obj_clear_flag(s_regions_modal, LV_OBJ_FLAG_SCROLLABLE);
+
+  s_apppage_title = "Known regions";
+  s_apppage_close = regionsModalClose;
+  statusBarSetTall(true);
+  updateGlobalStatusBar();
+  lv_obj_move_foreground(s_regions_modal);
+  if (g_statusbar.root) lv_obj_move_foreground(g_statusbar.root);
+
+  const lv_coord_t pad = SC(6);
+  lv_coord_t y = SC(6);
+
+  // Add row: field + button on one line, so the common action is reachable
+  // without scrolling on the short panels too.
+  const lv_coord_t btn_w = SC(64);
+  s_regions_ta = lv_textarea_create(s_regions_modal);
+  lv_textarea_set_one_line(s_regions_ta, true);
+  lv_textarea_set_max_length(s_regions_ta, TOUCH_REGION_SCOPE_MAXLEN - 1);
+  lv_obj_set_size(s_regions_ta, sw - pad * 3 - btn_w, SC(32));
+  lv_obj_set_pos(s_regions_ta, pad, y);
+  taSetPlaceholder(s_regions_ta, TR("#region"));
+  attachSettingsTaEvents(s_regions_ta);
+
+  lv_obj_t* add = lv_btn_create(s_regions_modal);
+  lv_obj_set_size(add, btn_w, SC(32));
+  lv_obj_set_pos(add, sw - pad - btn_w, y);
+  styleButton(add);
+  lv_obj_add_event_cb(add, regionsAddCb, LV_EVENT_CLICKED, nullptr);
+  { lv_obj_t* l = lv_label_create(add); lv_label_set_text(l, TR("Add"));
+    lv_obj_set_style_text_font(l, &g_font_12, LV_PART_MAIN); lv_obj_center(l); }
+  y += SC(38);
+
+  RegionRegistry& reg = the_mesh.regionRegistry();
+  if (reg.count() <= 0) {
+    lv_obj_t* empty = lv_label_create(s_regions_modal);
+    lv_label_set_text(empty, TR("No regions yet.\n\nAdd a #region to have messages\nscoped to it named in message details."));
+    lv_label_set_long_mode(empty, LV_LABEL_LONG_WRAP);
+    lv_obj_set_width(empty, sw - pad * 2);
+    lv_obj_set_style_text_color(empty, lv_color_hex(COLOR_SUB), LV_PART_MAIN);
+    lv_obj_set_style_text_font(empty, &g_font_12, LV_PART_MAIN);
+    lv_obj_set_pos(empty, pad, y);
+    return;
+  }
+
+  lv_obj_t* list = lv_obj_create(s_regions_modal);
+  lv_obj_remove_style_all(list);
+  lv_obj_set_size(list, sw - pad * 2, sh - chatBarH() - y - SC(6));
+  lv_obj_set_pos(list, pad, y);
+  lv_obj_set_flex_flow(list, LV_FLEX_FLOW_COLUMN);
+  lv_obj_set_style_pad_row(list, SC(5), LV_PART_MAIN);
+  lv_obj_set_scroll_dir(list, LV_DIR_VER);
+
+  for (uint8_t slot = 1; slot <= REGION_SLOT_MAX; ++slot) {
+    if (!reg.isActive(slot)) continue;
+    const char* nm = reg.nameForSlot(slot);
+    if (!nm || !nm[0]) continue;
+
+    lv_obj_t* row = lv_obj_create(list);
+    lv_obj_remove_style_all(row);
+    lv_obj_set_size(row, sw - pad * 2 - SC(4), SC(36));
+    lv_obj_set_style_bg_color(row, lv_color_hex(COLOR_PANEL), LV_PART_MAIN);
+    lv_obj_set_style_bg_opa(row, LV_OPA_COVER, LV_PART_MAIN);
+    lv_obj_set_style_radius(row, 6, LV_PART_MAIN);
+    lv_obj_clear_flag(row, LV_OBJ_FLAG_SCROLLABLE);
+
+    lv_obj_t* lbl = lv_label_create(row);
+    lv_label_set_text(lbl, nm);
+    lv_label_set_long_mode(lbl, LV_LABEL_LONG_DOT);
+    lv_obj_set_width(lbl, sw - pad * 2 - SC(4) - SC(84));
+    lv_obj_set_style_text_color(lbl, lv_color_hex(COLOR_TEXT), LV_PART_MAIN);
+    lv_obj_set_style_text_font(lbl, &g_font_14, LV_PART_MAIN);
+    lv_obj_align(lbl, LV_ALIGN_LEFT_MID, SC(6), 0);
+
+    lv_obj_t* rm = lv_btn_create(row);
+    lv_obj_set_size(rm, SC(72), SC(28));
+    lv_obj_align(rm, LV_ALIGN_RIGHT_MID, -SC(5), 0);
+    styleButton(rm);
+    lv_obj_add_event_cb(rm, regionsRemoveCb, LV_EVENT_CLICKED, (void*)(intptr_t)slot);
+    { lv_obj_t* l = lv_label_create(rm); lv_label_set_text(l, TR("Remove"));
+      lv_obj_set_style_text_font(l, &g_font_12, LV_PART_MAIN); lv_obj_center(l); }
+  }
+}
+
 static void openBlockedUsersModal() {
   blockedModalClose();
   const lv_coord_t sw = lv_disp_get_hor_res(nullptr);