Read and write files through Zed (#6169)

Co-authored-by: Agus Zubiaga <agus@zed.dev>

packages/core/src/config/config.ts

@@ -47,6 +47,10 @@ import { shouldAttemptBrowserLaunch } from '../utils/browser.js';
 import { MCPOAuthConfig } from '../mcp/oauth-provider.js';
 import { IdeClient } from '../ide/ide-client.js';
 import type { Content } from '@google/genai';
+import {
+  FileSystemService,
+  StandardFileSystemService,
+} from '../services/fileSystemService.js';
 import { logCliConfiguration, logIdeConnection } from '../telemetry/loggers.js';
 import { IdeConnectionEvent, IdeConnectionType } from '../telemetry/types.js';
 
@@ -204,6 +208,7 @@ export class Config {
   private toolRegistry!: ToolRegistry;
   private promptRegistry!: PromptRegistry;
   private readonly sessionId: string;
+  private fileSystemService: FileSystemService;
   private contentGeneratorConfig!: ContentGeneratorConfig;
   private readonly embeddingModel: string;
   private readonly sandbox: SandboxConfig | undefined;
@@ -268,6 +273,7 @@ export class Config {
     this.sessionId = params.sessionId;
     this.embeddingModel =
       params.embeddingModel ?? DEFAULT_GEMINI_EMBEDDING_MODEL;
+    this.fileSystemService = new StandardFileSystemService();
     this.sandbox = params.sandbox;
     this.targetDir = path.resolve(params.targetDir);
     this.workspaceContext = new WorkspaceContext(
@@ -700,6 +706,20 @@ export class Config {
     return this.ideClient;
   }
 
+  /**
+   * Get the current FileSystemService
+   */
+  getFileSystemService(): FileSystemService {
+    return this.fileSystemService;
+  }
+
+  /**
+   * Set a custom FileSystemService
+   */
+  setFileSystemService(fileSystemService: FileSystemService): void {
+    this.fileSystemService = fileSystemService;
+  }
+
   getChatCompression(): ChatCompressionSettings | undefined {
     return this.chatCompression;
   }