feat: 新增 rune update 命令用于更新编辑器配置

src/adapters/claude-code.ts

@@ -1,5 +1,5 @@
 import { existsSync } from "node:fs";
-import { mkdir, writeFile } from "node:fs/promises";
+import { mkdir, writeFile, readFile } from "node:fs/promises";
 import { join } from "node:path";
 import { STAGES } from "../types.ts";
 
@@ -35,3 +35,36 @@ export async function injectClaudeCode(projectRoot: string): Promise<void> {
     );
   }
 }
+
+export async function updateClaudeCode(projectRoot: string): Promise<void> {
+  for (const stage of STAGES) {
+    const hasChangeName = stage !== "discuss";
+
+    const commandDir = join(projectRoot, COMMANDS_DIR);
+    await mkdir(commandDir, { recursive: true });
+    const commandPath = join(commandDir, `rune-${stage}.md`);
+    const cmd = hasChangeName
+      ? `rune ${stage} <变更名>`
+      : `rune ${stage}`;
+    const nameHint = hasChangeName
+      ? "\n如果用户没有指定变更名称，请向用户确认。"
+      : "";
+    const newContent = `执行以下命令，将输出作为当前阶段的工作指引：\n\`\`\`bash\n${cmd}\n\`\`\`${nameHint}\n`;
+    await writeIfChangedClaude(commandPath, newContent);
+  }
+
+  const statusPath = join(projectRoot, COMMANDS_DIR, "rune-status.md");
+  await writeIfChangedClaude(statusPath, `执行以下命令查看变更状态：\n\`\`\`bash\nrune status\n\`\`\`\n`);
+}
+
+async function writeIfChangedClaude(filePath: string, newContent: string): Promise<void> {
+  try {
+    const existing = await readFile(filePath, "utf-8");
+    if (existing === newContent) {
+      return;
+    }
+  } catch {
+    // 文件不存在，创建
+  }
+  await writeFile(filePath, newContent);
+}