feat: 初始化 AI Code Diff Preview 插件项目

- 核心架构搭建：四层架构设计（触发层、隔离层、Diff引擎、UI层） - 快照管理器：管理 Base/Suggest 双版本，隔离 AI 生成代码 - Diff 引擎：基于 Myers 算法计算差异，生成变更块 - 内联装饰器：红绿高亮显示删除/新增行 - CodeLens 提供器：提供 Accept/Reject 按钮 - 事务处理：Accept/Reject 原子化操作 - Claude Hooks 集成：支持 after_code_edit/after_write_file 事件 - 状态栏显示：实时显示变更状态 - 基础测试用例：7 个测试全部通过技术栈：TypeScript + VSCode Extension API + diff 库 + esbuild
2026-09-27 15:31:51 +08:00 · 2026-06-17 21:11:33 +08:00
commit 3168e81aa6
21 changed files with 6912 additions and 0 deletions
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+/**
+ * 状态栏管理器 - 显示 Diff 状态信息
+ */
+
+import * as vscode from 'vscode';
+import { Snapshot } from '../models/types';
+import { STATUS_BAR_PRIORITY } from '../models/constants';
+
+export class StatusBarManager {
+  private statusBarItem: vscode.StatusBarItem;
+  private chunkCountItem: vscode.StatusBarItem;
+
+  constructor() {
+    this.statusBarItem = vscode.window.createStatusBarItem(
+      vscode.StatusBarAlignment.Left,
+      STATUS_BAR_PRIORITY.DIFF_STATUS
+    );
+
+    this.chunkCountItem = vscode.window.createStatusBarItem(
+      vscode.StatusBarAlignment.Left,
+      STATUS_BAR_PRIORITY.CHUNK_COUNT
+    );
+  }
+
+  /**
+   * 更新状态栏
+   */
+  update(snapshot: Snapshot): void {
+    const pendingChunks = snapshot.chunks.filter(c => c.status === 'pending');
+    const conflictChunks = snapshot.chunks.filter(c => c.status === 'conflict');
+
+    // 更新主状态
+    this.statusBarItem.text = '$(diff) AI Diff';
+    this.statusBarItem.tooltip = 'AI Diff Preview 活跃';
+    this.statusBarItem.show();
+
+    // 更新变更块数量
+    if (pendingChunks.length > 0 || conflictChunks.length > 0) {
+      this.chunkCountItem.text = `$(edit) ${pendingChunks.length} 个变更`;
+      if (conflictChunks.length > 0) {
+        this.chunkCountItem.text += ` (${conflictChunks.length} 个冲突)`;
+        this.chunkCountItem.backgroundColor = new vscode.ThemeColor(
+          'statusBarItem.warningBackground'
+        );
+      } else {
+        this.chunkCountItem.backgroundColor = undefined;
+      }
+      this.chunkCountItem.tooltip = '点击查看变更详情';
+      this.chunkCountItem.show();
+    } else {
+      this.chunkCountItem.hide();
+    }
+  }
+
+  /**
+   * 清除状态栏
+   */
+  clear(): void {
+    this.statusBarItem.hide();
+    this.chunkCountItem.hide();
+  }
+
+  /**
+   * 释放资源
+   */
+  dispose(): void {
+    this.statusBarItem.dispose();
+    this.chunkCountItem.dispose();
+  }
+}