docs: document sotto setup for a second device

README.de.md

@@ -114,6 +114,16 @@ sotto grant <user-id>                      # share the active environment (they
 sotto token create --name ci               # SOTTO_TOKEN: run/export in CI, no password needed
 ```
 
+### Ein weiteres Gerät
+
+```sh
+sotto login                  # same account as the first machine
+sotto setup                  # unpack the Emergency Kit onto this device
+sotto pull                   # download the ciphertext you already pushed
+```
+
+Du brauchst das von `sotto init` ausgegebene Emergency Kit. Ohne es kann ein neues Gerät den Tresor nicht entschlüsseln.
+
 ## Architektur
 
 ```text

README.es.md

@@ -114,6 +114,16 @@ sotto grant <user-id>                      # share the active environment (they
 sotto token create --name ci               # SOTTO_TOKEN: run/export in CI, no password needed
 ```
 
+### Otro dispositivo
+
+```sh
+sotto login                  # same account as the first machine
+sotto setup                  # unpack the Emergency Kit onto this device
+sotto pull                   # download the ciphertext you already pushed
+```
+
+Necesitas el Emergency Kit que imprime `sotto init`; sin él, un dispositivo nuevo no puede descifrar la bóveda.
+
 ## Arquitectura
 
 ```text

README.fr.md

@@ -114,6 +114,16 @@ sotto grant <user-id>                      # share the active environment (they
 sotto token create --name ci               # SOTTO_TOKEN: run/export in CI, no password needed
 ```
 
+### Un autre appareil
+
+```sh
+sotto login                  # same account as the first machine
+sotto setup                  # unpack the Emergency Kit onto this device
+sotto pull                   # download the ciphertext you already pushed
+```
+
+Vous avez besoin de l'Emergency Kit imprimé par `sotto init` ; sans lui, un nouvel appareil ne peut pas déchiffrer le coffre.
+
 ## Architecture
 
 ```text

README.md

@@ -112,6 +112,16 @@ sotto grant <user-id>                      # share the active environment (they
 sotto token create --name ci               # SOTTO_TOKEN: run/export in CI, no password needed
 ```
 
+### Another device
+
+```sh
+sotto login                  # same account as the first machine
+sotto setup                  # unpack the Emergency Kit onto this device
+sotto pull                   # download the ciphertext you already pushed
+```
+
+You need the Emergency Kit printed by `sotto init`; without it, a new device cannot decrypt the vault.
+
 ## Architecture
 
 ```text

README.pt-BR.md

@@ -114,6 +114,16 @@ sotto grant <user-id>                      # share the active environment (they
 sotto token create --name ci               # SOTTO_TOKEN: run/export in CI, no password needed
 ```
 
+### Outro dispositivo
+
+```sh
+sotto login                  # same account as the first machine
+sotto setup                  # unpack the Emergency Kit onto this device
+sotto pull                   # download the ciphertext you already pushed
+```
+
+Você precisa do Emergency Kit exibido por `sotto init`; sem ele, um novo dispositivo não consegue descriptografar o cofre.
+
 ## Arquitetura
 
 ```text