feat(llm): add new models for xAI and Google providers

Add 'grok-3-beta' to xAI provider and 'gemini-2.5-flash-preview-04-17' to Google provider. Also, ensure file saving when content is updated in WorkbenchStore and update streaming indicator styling in chat messages.

app/lib/modules/llm/providers/google.ts

@@ -13,6 +13,12 @@ export default class GoogleProvider extends BaseProvider {
   };
 
   staticModels: ModelInfo[] = [
+    {
+      name: 'gemini-2.5-flash-preview-04-17',
+      label: 'Gemini 2.5 Pro Flash',
+      provider: 'Google',
+      maxTokenAllowed: 65536,
+    },
     { name: 'gemini-1.5-flash-latest', label: 'Gemini 1.5 Flash', provider: 'Google', maxTokenAllowed: 8192 },
     {
       name: 'gemini-2.0-flash-thinking-exp-01-21',

app/lib/modules/llm/providers/xai.ts

@@ -13,6 +13,7 @@ export default class XAIProvider extends BaseProvider {
   };
 
   staticModels: ModelInfo[] = [
+    { name: 'grok-3-beta', label: 'xAI Grok 3 Beta', provider: 'xAI', maxTokenAllowed: 8000 },
     { name: 'grok-beta', label: 'xAI Grok Beta', provider: 'xAI', maxTokenAllowed: 8000 },
     { name: 'grok-2-1212', label: 'xAI Grok2 1212', provider: 'xAI', maxTokenAllowed: 8000 },
   ];

app/lib/stores/workbench.ts

@@ -513,6 +513,10 @@ export class WorkbenchStore {
 
       this.#editorStore.updateFile(fullPath, data.action.content);
 
+      if (!isStreaming && data.action.content) {
+        await this.saveFile(fullPath);
+      }
+
       if (!isStreaming) {
         await artifact.runner.runAction(data);
         this.resetAllFileModifications();