2026.9.21.3

Both version sites in one commit, which `01_help_and_version.sh` cross-checks.
The bootstrap pin in .xlings.json stays at 2026.9.21.1: it must name a version
that is published, mirrored and in the index, and this one is none of those
yet.

Author: speak-agent

CHANGELOG.md

@@ -3,7 +3,7 @@
 > 本文件追踪 `mcpp-community/mcpp` 公开仓的版本演进。
 > 格式参考 [Keep a Changelog](https://keepachangelog.com/zh-CN/1.1.0/)。
 
-## [Unreleased]
+## [2026.9.21.3] - 2026-09-21
 
 ### `mcpp test --no-run`:为一个跑不了的目标构建测试,并把这当成答案
 

mcpp.toml

@@ -1,6 +1,6 @@
 [package]
 name        = "mcpp"
-version = "2026.9.21.2"
+version = "2026.9.21.3"
 description = "Modern C++ build & package management tool"
 license     = "Apache-2.0"
 authors     = ["mcpp-community"]

modules/versioning/src/version.cppm

@@ -31,6 +31,6 @@ import std;
 
 export namespace mcpp {
 
-inline constexpr std::string_view MCPP_VERSION = "2026.9.21.2";
+inline constexpr std::string_view MCPP_VERSION = "2026.9.21.3";
 
 } // namespace mcpp