ios: update style

ios/Packages/Sybil/Sources/Sybil/SybilViewModel.swift

@@ -111,11 +111,15 @@ final class SybilViewModel {
     }
 
     var providerModelOptions: [String] {
-        let serverModels = modelCatalog[provider]?.models ?? []
+        modelOptions(for: provider)
+    }
+
+    func modelOptions(for candidate: Provider) -> [String] {
+        let serverModels = modelCatalog[candidate]?.models ?? []
         if !serverModels.isEmpty {
             return serverModels
         }
-        return fallbackModels[provider] ?? []
+        return fallbackModels[candidate] ?? []
     }
 
     var selectedTitle: String {
@@ -222,7 +226,7 @@ final class SybilViewModel {
             let initiatedLabel: String?
             if let model = chat.initiatedModel?.trimmingCharacters(in: .whitespacesAndNewlines), !model.isEmpty {
                 if let provider = chat.initiatedProvider {
-                    initiatedLabel = "\(provider.displayName) · \(model)"
+                    initiatedLabel = "\(provider.displayName) • \(model)"
                 } else {
                     initiatedLabel = model
                 }
@@ -336,6 +340,15 @@ final class SybilViewModel {
         SybilLog.info(SybilLog.ui, "Model changed to \(nextModel)")
     }
 
+    func setProvider(_ nextProvider: Provider, model nextModel: String) {
+        provider = nextProvider
+        model = nextModel
+        settings.preferredProvider = nextProvider
+        settings.preferredModelByProvider[nextProvider] = nextModel
+        settings.persist()
+        SybilLog.info(SybilLog.ui, "Provider changed to \(nextProvider.rawValue), model=\(nextModel)")
+    }
+
     func startNewChat() {
         SybilLog.debug(SybilLog.ui, "Starting draft chat")
         draftKind = .chat