feat: move vault ssh signing into a plugin (C5)

src/ui/locales/en.json

@@ -607,30 +607,6 @@
     "authenticationMethodDesc": "Select the one method Termix will use to authenticate this SSH connection. Other methods are not tried automatically.",
     "storedCredential": "Stored Credential",
     "selectACredential": "Select a credential...",
-    "vaultProfile": "Vault Signer Profile",
-    "selectAVaultProfile": "Select a Vault profile...",
-    "vaultProfileHint": "Settings come from the shared profile; you'll sign in to Vault via OIDC when you connect. No secrets are stored.",
-    "vaultNewProfile": "New profile",
-    "vaultManageProfiles": "Manage Vault profiles",
-    "vaultAddrLabel": "Vault Address",
-    "vaultNamespaceLabel": "Namespace",
-    "vaultOidcMountLabel": "OIDC Auth Mount",
-    "vaultOidcRoleLabel": "OIDC Role",
-    "vaultSshMountLabel": "SSH Secrets Mount",
-    "vaultSshRoleLabel": "SSH Signer Role",
-    "vaultValidPrincipalsLabel": "Valid Principals",
-    "vaultKeyTypeLabel": "Ephemeral Key Type",
-    "vaultSharedLabel": "Share with all users",
-    "vaultCreateProfile": "Create profile",
-    "vaultProfileCreated": "Vault profile created",
-    "vaultProfileSaved": "Vault profile saved",
-    "vaultProfileDeleted": "Vault profile deleted",
-    "vaultProfileSaveFailed": "Failed to save Vault profile",
-    "vaultProfileDeleteFailed": "Failed to delete Vault profile",
-    "vaultSaveProfile": "Save profile",
-    "vaultProfileValidationError": "Name, Vault address and SSH signer role are required",
-    "vaultNoProfiles": "No Vault profiles yet.",
-    "vaultSharedBadge": "shared",
     "keyTypeLabel": "Key Type",
     "keyTypeAuto": "Auto Detect",
     "keyPasteTab": "Paste",