Switch file-picker to grok 4 fast instead Flash

Author: jahooma

.agents/factory/file-picker.ts

@@ -7,8 +7,8 @@ export const filePicker = (
   model: ModelName,
 ): Omit<SecretAgentDefinition, 'id'> => ({
   model,
-  displayName: AGENT_PERSONAS['file-picker'].displayName,
-  spawnerPrompt: AGENT_PERSONAS['file-picker'].purpose,
+  displayName: 'Fletcher the File Fetcher',
+  spawnerPrompt: 'Spawn to find relevant files in a codebase related to the prompt. Cannot do string searches on the codebase.',
   inputSchema: {
     prompt: {
       type: 'string',

.agents/file-picker.ts

@@ -6,7 +6,7 @@ import type { SecretAgentDefinition } from './types/secret-agent-definition'
 const definition: SecretAgentDefinition = {
   id: 'file-picker',
   publisher,
-  ...filePicker('google/gemini-2.5-flash'),
+  ...filePicker('x-ai/grok-4-fast'),
 }
 
 export default definition