refactor(web): centralize text generation model selection

Author: maria-rcks

apps/web/src/components/ChatView.tsx

@@ -639,6 +639,7 @@ export default function ChatView({ threadId }: ChatViewProps) {
     }),
     [selectedModel, selectedModelOptionsForDispatch, selectedProvider],
   );
+  const selectedTextGenerationModel = settings.textGenerationModel || undefined;
   const providerOptionsForDispatch = useMemo(() => getProviderStartOptions(settings), [settings]);
   const selectedModelForPicker = selectedModel;
   const modelOptionsByProvider = useMemo(
@@ -2646,7 +2647,7 @@ export default function ChatView({ threadId }: ChatViewProps) {
           attachments: turnAttachments,
         },
         modelSelection: selectedModelSelection,
-        textGenerationModel: settings.textGenerationModel || undefined,
+        textGenerationModel: selectedTextGenerationModel,
         ...(providerOptionsForDispatch ? { providerOptions: providerOptionsForDispatch } : {}),
         assistantDeliveryMode: settings.enableAssistantStreaming ? "streaming" : "buffered",
         runtimeMode,
@@ -2929,7 +2930,7 @@ export default function ChatView({ threadId }: ChatViewProps) {
             attachments: [],
           },
           modelSelection: selectedModelSelection,
-          textGenerationModel: settings.textGenerationModel || undefined,
+          textGenerationModel: selectedTextGenerationModel,
           ...(providerOptionsForDispatch ? { providerOptions: providerOptionsForDispatch } : {}),
           assistantDeliveryMode: settings.enableAssistantStreaming ? "streaming" : "buffered",
           runtimeMode,
@@ -2983,7 +2984,7 @@ export default function ChatView({ threadId }: ChatViewProps) {
       setThreadError,
       settings.enableAssistantStreaming,
       selectedModel,
-      settings.textGenerationModel,
+      selectedTextGenerationModel,
     ],
   );
 
@@ -3048,7 +3049,7 @@ export default function ChatView({ threadId }: ChatViewProps) {
             attachments: [],
           },
           modelSelection: selectedModelSelection,
-          textGenerationModel: settings.textGenerationModel || undefined,
+          textGenerationModel: selectedTextGenerationModel,
           ...(providerOptionsForDispatch ? { providerOptions: providerOptionsForDispatch } : {}),
           assistantDeliveryMode: settings.enableAssistantStreaming ? "streaming" : "buffered",
           runtimeMode,
@@ -3104,7 +3105,7 @@ export default function ChatView({ threadId }: ChatViewProps) {
     providerOptionsForDispatch,
     selectedProvider,
     settings.enableAssistantStreaming,
-    settings.textGenerationModel,
+    selectedTextGenerationModel,
     syncServerReadModel,
     selectedModel,
   ]);