refactor(vscode-ide-companion): simplify ACP connection and cleanup configurations

- Remove .claude from .gitignore
- Update CSS file path in eslint config
- Simplify VS Code extension title
- Remove unused keybinding for openChat command
- Delete unused auth constants file
- Simplify ACP connection by removing backend parameter
- Move authMethod to acpTypes
- Restrict ACP backend to Qwen only
- Remove backend property from connection state
- Minor formatting update in webview index.tsx

packages/vscode-ide-companion/package.json

@@ -57,7 +57,7 @@
       },
       {
         "command": "qwen-code.openChat",
-        "title": "Qwen Code: Open Chat",
+        "title": "Qwen Code: Open",
         "icon": "./assets/icon.png"
       },
       {
@@ -107,11 +107,6 @@
         "command": "qwen.diff.accept",
         "key": "cmd+s",
         "when": "qwen.diff.isVisible"
-      },
-      {
-        "command": "qwen-code.openChat",
-        "key": "ctrl+shift+a",
-        "mac": "cmd+shift+a"
       }
     ]
   },

packages/vscode-ide-companion/src/constants/auth.ts

@@ -1,7 +0,0 @@
-/**
- * @license
- * Copyright 2025 Qwen Team
- * SPDX-License-Identifier: Apache-2.0
- */
-
-export const authMethod = 'qwen-oauth';

packages/vscode-ide-companion/src/services/acpConnection.ts

@@ -6,7 +6,6 @@
 
 import { JSONRPC_VERSION } from '../types/acpTypes.js';
 import type {
-  AcpBackend,
   AcpMessage,
   AcpPermissionRequest,
   AcpResponse,
@@ -31,7 +30,6 @@ export class AcpConnection {
   private child: ChildProcess | null = null;
   private pendingRequests = new Map<number, PendingRequest<unknown>>();
   private nextRequestId = { value: 0 };
-  private backend: AcpBackend | null = null;
   // Remember the working dir provided at connect() so later ACP calls
   // that require cwd (e.g. session/list) can include it.
   private workingDir: string = process.cwd();
@@ -53,15 +51,13 @@ export class AcpConnection {
   }
 
   /**
-   * Connect to ACP backend
+   * Connect to Qwen ACP
    *
-   * @param backend - Backend type
    * @param cliPath - CLI path
    * @param workingDir - Working directory
    * @param extraArgs - Extra command line arguments
    */
   async connect(
-    backend: AcpBackend,
     cliPath: string,
     workingDir: string = process.cwd(),
     extraArgs: string[] = [],
@@ -70,7 +66,6 @@ export class AcpConnection {
       this.disconnect();
     }
 
-    this.backend = backend;
     this.workingDir = workingDir;
 
     const isWindows = process.platform === 'win32';
@@ -136,15 +131,13 @@ export class AcpConnection {
     };
 
     this.child = spawn(spawnCommand, spawnArgs, options);
-    await this.setupChildProcessHandlers(backend);
+    await this.setupChildProcessHandlers();
   }
 
   /**
    * Set up child process handlers
-   *
-   * @param backend - Backend name
    */
-  private async setupChildProcessHandlers(backend: string): Promise<void> {
+  private async setupChildProcessHandlers(): Promise<void> {
     let spawnError: Error | null = null;
 
     this.child!.stderr?.on('data', (data) => {
@@ -153,9 +146,9 @@ export class AcpConnection {
         message.toLowerCase().includes('error') &&
         !message.includes('Loaded cached')
       ) {
-        console.error(`[ACP ${backend}]:`, message);
+        console.error(`[ACP qwen]:`, message);
       } else {
-        console.log(`[ACP ${backend}]:`, message);
+        console.log(`[ACP qwen]:`, message);
       }
     });
 
@@ -165,7 +158,7 @@ export class AcpConnection {
 
     this.child!.on('exit', (code, signal) => {
       console.error(
-        `[ACP ${backend}] Process exited with code: ${code}, signal: ${signal}`,
+        `[ACP qwen] Process exited with code: ${code}, signal: ${signal}`,
       );
     });
 
@@ -177,7 +170,7 @@ export class AcpConnection {
     }
 
     if (!this.child || this.child.killed) {
-      throw new Error(`${backend} ACP process failed to start`);
+      throw new Error(`Qwen ACP process failed to start`);
     }
 
     // Handle messages from ACP server
@@ -409,7 +402,6 @@ export class AcpConnection {
 
     this.pendingRequests.clear();
     this.sessionManager.reset();
-    this.backend = null;
   }
 
   /**

packages/vscode-ide-companion/src/services/qwenAgentManager.ts

@@ -20,7 +20,7 @@ import type {
 import { QwenConnectionHandler } from '../services/qwenConnectionHandler.js';
 import { QwenSessionUpdateHandler } from './qwenSessionUpdateHandler.js';
 import { CliContextManager } from '../cli/cliContextManager.js';
-import { authMethod } from '../constants/auth.js';
+import { authMethod } from '../types/acpTypes.js';
 
 export type { ChatMessage, PlanEntry, ToolCallUpdateData };
 
@@ -1220,7 +1220,7 @@ export class QwenAgentManager {
       );
     }
 
-    // Try to create a new ACP session. If the backend asks for auth despite our
+    // Try to create a new ACP session. If Qwen asks for auth despite our
     // cached flag (e.g. fresh process or expired tokens), re-authenticate and retry.
     try {
       await this.connection.newSession(workingDir);

packages/vscode-ide-companion/src/services/qwenConnectionHandler.ts

@@ -16,7 +16,7 @@ import type { QwenSessionReader } from '../services/qwenSessionReader.js';
 import type { AuthStateManager } from '../services/authStateManager.js';
 import { CliVersionManager } from '../cli/cliVersionManager.js';
 import { CliContextManager } from '../cli/cliContextManager.js';
-import { authMethod } from '../constants/auth.js';
+import { authMethod } from '../types/acpTypes.js';
 
 /**
  * Qwen Connection Handler class
@@ -71,7 +71,7 @@ export class QwenConnectionHandler {
     // Build extra CLI arguments (only essential parameters)
     const extraArgs: string[] = [];
 
-    await connection.connect('qwen', effectiveCliPath, workingDir, extraArgs);
+    await connection.connect(effectiveCliPath, workingDir, extraArgs);
 
     // Check if we have valid cached authentication
     if (authStateManager) {
@@ -214,14 +214,14 @@ export class QwenConnectionHandler {
           errorMessage,
         );
 
-        // If the backend reports that authentication is required, try to
+        // If Qwen reports that authentication is required, try to
         // authenticate on-the-fly once and retry without waiting.
         const requiresAuth =
           errorMessage.includes('Authentication required') ||
           errorMessage.includes('(code: -32000)');
         if (requiresAuth) {
           console.log(
-            '[QwenAgentManager] Backend requires authentication. Authenticating and retrying session/new...',
+            '[QwenAgentManager] Qwen requires authentication. Authenticating and retrying session/new...',
           );
           try {
             await connection.authenticate(authMethod);

packages/vscode-ide-companion/src/types/acpTypes.ts

@@ -5,8 +5,9 @@
  */
 
 export const JSONRPC_VERSION = '2.0' as const;
+export const authMethod = 'qwen-oauth';
 
-export type AcpBackend = 'qwen' | 'claude' | 'gemini' | 'codex';
+export type AcpBackend = 'qwen';
 
 export interface AcpRequest {
   jsonrpc: typeof JSONRPC_VERSION;

packages/vscode-ide-companion/src/types/connectionTypes.ts

@@ -28,5 +28,4 @@ export interface AcpConnectionState {
   nextRequestId: number;
   sessionId: string | null;
   isInitialized: boolean;
-  backend: string | null;
 }

packages/vscode-ide-companion/src/webview/WebViewProvider.ts

@@ -15,7 +15,7 @@ import { MessageHandler } from '../webview/MessageHandler.js';
 import { WebViewContent } from '../webview/WebViewContent.js';
 import { CliInstaller } from '../cli/cliInstaller.js';
 import { getFileName } from './utils/webviewUtils.js';
-import { authMethod } from '../constants/auth.js';
+import { authMethod } from '../types/acpTypes.js';
 
 export class WebViewProvider {
   private panelManager: PanelManager;

packages/vscode-ide-companion/src/webview/index.tsx

@@ -6,6 +6,7 @@
 
 import ReactDOM from 'react-dom/client';
 import { App } from './App.js';
+
 // eslint-disable-next-line import/no-internal-modules
 import './styles/tailwind.css';
 // eslint-disable-next-line import/no-internal-modules