fix: CLI缺少参数友好提示、config.yaml注释模板、skill目录结构规范

src/cli.ts

@@ -149,6 +149,13 @@ function handleError(e: unknown): never {
     printError(new UsageError(`未知命令: ${args.replace(/`/g, "")}`, {
       hint: "运行 rune help 查看所有命令",
     }));
+  } else if (e instanceof Error && e.message.includes("missing required args")) {
+    const match = e.message.match(/command `(\w+)/);
+    const cmd = match ? match[1] : "未知命令";
+    printError(new UsageError(`命令 '${cmd}' 缺少必填参数`, {
+      usage: `rune ${cmd} <change-name>`,
+      hint: `运行 rune help ${cmd} 查看用法`,
+    }));
   } else {
     printError(new InternalError());
   }