refactor(vscode-ide-companion): 重构代码并更新文件命名

- 更新文件命名规则，使用小写字母和下划线
- 修复部分代码导入路径
- 删除未使用的 WEBVIEW_PIN_FEATURE.md 文件

packages/vscode-ide-companion/src/storage/conversationStore.ts

@@ -0,0 +1,83 @@
+/**
+ * @license
+ * Copyright 2025 Qwen Team
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import type * as vscode from 'vscode';
+import type { ChatMessage } from '../agents/qwenAgentManager.js';
+
+export interface Conversation {
+  id: string;
+  title: string;
+  messages: ChatMessage[];
+  createdAt: number;
+  updatedAt: number;
+}
+
+export class ConversationStore {
+  private context: vscode.ExtensionContext;
+  private currentConversationId: string | null = null;
+
+  constructor(context: vscode.ExtensionContext) {
+    this.context = context;
+  }
+
+  async createConversation(title: string = 'New Chat'): Promise<Conversation> {
+    const conversation: Conversation = {
+      id: `conv_${Date.now()}_${Math.random().toString(36).substr(2, 9)}`,
+      title,
+      messages: [],
+      createdAt: Date.now(),
+      updatedAt: Date.now(),
+    };
+
+    const conversations = await this.getAllConversations();
+    conversations.push(conversation);
+    await this.context.globalState.update('conversations', conversations);
+
+    this.currentConversationId = conversation.id;
+    return conversation;
+  }
+
+  async getAllConversations(): Promise<Conversation[]> {
+    return this.context.globalState.get<Conversation[]>('conversations', []);
+  }
+
+  async getConversation(id: string): Promise<Conversation | null> {
+    const conversations = await this.getAllConversations();
+    return conversations.find((c) => c.id === id) || null;
+  }
+
+  async addMessage(
+    conversationId: string,
+    message: ChatMessage,
+  ): Promise<void> {
+    const conversations = await this.getAllConversations();
+    const conversation = conversations.find((c) => c.id === conversationId);
+
+    if (conversation) {
+      conversation.messages.push(message);
+      conversation.updatedAt = Date.now();
+      await this.context.globalState.update('conversations', conversations);
+    }
+  }
+
+  async deleteConversation(id: string): Promise<void> {
+    const conversations = await this.getAllConversations();
+    const filtered = conversations.filter((c) => c.id !== id);
+    await this.context.globalState.update('conversations', filtered);
+
+    if (this.currentConversationId === id) {
+      this.currentConversationId = null;
+    }
+  }
+
+  getCurrentConversationId(): string | null {
+    return this.currentConversationId;
+  }
+
+  setCurrentConversationId(id: string): void {
+    this.currentConversationId = id;
+  }
+}