refactor(ai-commit): 移除历史提交参考并简化选项

- 从 AI 服务中移除 `recentCommits` 参数和相关处理逻辑
- 删除 Git 服务中的 `getRecentCommits` 方法
- 更新系统提示，移除历史提交参考部分
- 简化提交选项排序，移除 'Historical' 类型
- 更新相关类型定义和上下文缓存结构

Author: Sisyphean-a

src/features/aiCommit/ai.ts

@@ -21,7 +21,6 @@ export class AiService {
   async generate(
     diff: string, 
     projectMeta: string,
-    recentCommits: string[],
     onUpdate: (options: CommitOption[]) => void
   ) {
     const apiKey = this.config.get<string>("apiKey");
@@ -39,12 +38,6 @@ export class AiService {
       // 注入 Project Meta
       systemPrompt = systemPrompt.replace("{{PROJECT_META}}", projectMeta || "(None)");
 
-      // 注入 Recent Commits
-      const commitsStr = recentCommits.length > 0 
-        ? recentCommits.map(c => `- ${c}`).join("\n")
-        : "(None)";
-      systemPrompt = systemPrompt.replace("{{RECENT_COMMITS}}", commitsStr);
-
       const options = await this.fetchFastOptions(
         baseUrl!,
         apiKey,
@@ -64,7 +57,7 @@ export class AiService {
 
   private sortOptions(options: CommitOption[]) {
     // Define sort order
-    const order = ["Emoji", "StandardShort", "Conventional", "Historical", "Smart"];
+    const order = ["Emoji", "StandardShort", "Conventional", "Smart"];
     options.sort((a, b) => {
       let ia = order.indexOf(a.type);
       let ib = order.indexOf(b.type);

src/features/aiCommit/git.ts

@@ -257,31 +257,7 @@ export class GitService {
     return totalOutput.trim();
   }
 
-  /**
-   * 获取最近的 N 条提交记录作为参考
-   */
-  async getRecentCommits(limit: number = 5): Promise<string[]> {
-    const repo = this.repository;
-    if (!repo) return [];
-    try {
-      // %s = subject only, %B = raw body (subject + body)
-      // Let's use %B to capture full style (including body formatting)
-      const output = await this.execCommand(
-        `git log -n ${limit} --pretty=format:"%B%n------------------------"`,
-        repo.rootUri.fsPath
-      );
-      
-      const debugLogs = output
-        .split("------------------------")
-        .map(s => s.trim())
-        .filter(s => s.length > 0);
-        
-      return debugLogs;
-    } catch (e) {
-      console.warn("Failed to fetch recent commits", e);
-      return [];
-    }
-  }
+
 
   /**
    * 旧接口兼容

src/features/aiCommit/index.ts

@@ -23,7 +23,7 @@ export function activate(context: vscode.ExtensionContext) {
   // 缓存 diff 结果，供 "预处理后生成" 使用
   let cachedDiff: string | null = null;
   // 缓存上下文信息，供 "预览 Prompt" 使用
-  let lastContext: { diff: string; projectMeta: string; recentCommits: string[] } | null = null;
+  let lastContext: { diff: string; projectMeta: string } | null = null;
 
   // 1. 注册 TreeDataProvider
   context.subscriptions.push(
@@ -35,13 +35,9 @@ export function activate(context: vscode.ExtensionContext) {
     provideTextDocumentContent(uri: vscode.Uri): string {
       if (!lastContext) return "No Prompt generated yet.";
 
-      const { diff, projectMeta, recentCommits } = lastContext;
+      const { diff, projectMeta } = lastContext;
       let content = FAST_PROMPT;
       content = content.replace("{{PROJECT_META}}", projectMeta || "(None)");
-      const commitsStr = recentCommits.length > 0 
-        ? recentCommits.map(c => `- ${c}`).join("\n")
-        : "(None)";
-      content = content.replace("{{RECENT_COMMITS}}", commitsStr);
 
       return `=== SYSTEM PROMPT ===\n${content}\n\n=== USER CONTENT (DIFF) ===\n${diff}`;
     }
@@ -82,21 +78,21 @@ export function activate(context: vscode.ExtensionContext) {
       },
       async () => {
         try {
-          // A. 获取 Git 历史 (Few-shot)
-          const recentCommits = await gitService.getRecentCommits(5);
+          // A. (Removed) 获取 Git 历史 (Few-shot)
+          // const recentCommits = await gitService.getRecentCommits(5);
 
           // B. 获取项目元数据
           const projectMeta = await getProjectMeta();
 
           // 保存上下文供预览
-          lastContext = { diff, projectMeta, recentCommits };
+          lastContext = { diff, projectMeta };
 
           // 调用快速 AI 服务
           Logger.info(
             `正在调用 AI 生成 (DeepSeek V3)... Diff 长度: ${diff.length}`
           );
 
-          await aiService.generate(diff, projectMeta, recentCommits, (options) => {
+          await aiService.generate(diff, projectMeta, (options) => {
             Logger.info(`收到 AI 部分结果: ${options.length} 条建议`);
             provider.refresh(options);
           });
@@ -137,9 +133,8 @@ export function activate(context: vscode.ExtensionContext) {
         cachedDiff = await gitService.formatSmartDiff(analysis);
 
         // [New] 预加载上下文，以便用户可以在“生成前”查看 Prompt
-        const recentCommits = await gitService.getRecentCommits(5);
         const projectMeta = await getProjectMeta();
-        lastContext = { diff: cachedDiff, projectMeta, recentCommits };
+        lastContext = { diff: cachedDiff, projectMeta };
 
         // 4. 更新 UI 展示文件列表
         provider.updatePreProcess(analysis);

src/features/aiCommit/prompts.ts

@@ -1,18 +1,14 @@
 export const FAST_PROMPT = `
-You are a developer assistant. Analyze git diff and generate 4 commit messages:
+You are a developer assistant. Analyze git diff and generate 3 commit messages:
 1. "Emoji": Concise, starts with emoji (e.g. ✨), max 50 chars.
 2. "StandardShort": Strictly one line, Standard Conventional format (feat(scope): subject), NO emoji.
 3. "Conventional": Standard Conventional Commits format (feat(scope): subject). **Can be multi-line** if explanation is needed.
-4. "Historical": Mimic the style of the user's recent commits (provided below). If recent commits are messy, try to clean them up slightly but keep the "spirit" (e.g. language, brevity).
 
 All messages must be in Simplified Chinese (简体中文).
 
 Project Metadata:
 {{PROJECT_META}}
 
-Recent Commits (Reference):
-{{RECENT_COMMITS}}
-
 Note: The input may be a "Smart Diff" or "Summary Mode":
 - If you see "[DELETED] file", that file was deleted.
 - If you see "[BINARY/ASSET] file", it's a binary/asset change.
@@ -22,7 +18,6 @@ Return strictly a JSON Array:
 [
   {"type":"Emoji","description":"Emoji 风格 (简短)","message":"✨ ..."}, 
   {"type":"StandardShort","description":"极简标准","message":"feat(scope): ..."},
-  {"type":"Conventional","description":"Conventional 规范 (标准)","message":"feat(scope): ...\\n\\nBody..."},
-  {"type":"Historical","description":"仿历史风格 (习惯)","message":"..."}
+  {"type":"Conventional","description":"Conventional 规范 (标准)","message":"feat(scope): ...\\n\\nBody..."}
 ]
 `;