mcpplibs.os 0.2.2: Emscripten (wasm32-emscripten) (#619)

Adds mcpplibs.os 0.2.2 (mcpplibs/os#9; tag 0.2.2 on 2b46d9f): the wasm32-emscripten target over Emscripten's C library and openkal-emscripten 0.6.0; fs::read without a 64 KiB stack array; stamp_of / identity_of ask for the kind. GLOBAL is the GitHub tag archive, CN the byte-identical GitCode mcpp-res/os asset (sha256 33c5d946...4e3e). Member tests/examples/os moves to 0.2.2.

Author: Sunrisepeak

CHANGELOG.md

@@ -9,6 +9,12 @@
 
 ### Added
 
+- **mcpplibs.os 0.2.2。** 新增 `wasm32-emscripten` 目标:基于 Emscripten 的 C 库与 openkal-emscripten 0.6.0 的 wasm
+  模块,在 node 或页面中运行;新增 `platform::emscripten`、`architecture::wasm32` 与 `is_emscripten`,不定义平台模块。
+  openkal-emscripten 没有 `openkal.process`,启动程序的调用在链接时失败并给出 openkal 符号名;`interrupt` 报告不会收到
+  结束请求。修正(所有目标):`fs::read` 不再经栈上 64 KiB 数组读取(它占满了 wasm 模块的默认栈);`stamp_of` 与
+  `identity_of` 同时请求节点种类,不再把已有文件报告为不存在。GLOBAL 为 GitHub 标签归档,CN 为 GitCode `mcpp-res/os`
+  镜像,sha256 一致。测试成员 `os` 移到 0.2.2。
 - **mcpplibs.openkal-emscripten 0.6.0。** 按 openkal 0.17.1 实现其提供的十二个接口,使依赖 openkal 0.17 的
   mcpplibs.os 能在 `wasm32-emscripten` 上解析与链接。`kal_env_image` 为 node 所给的脚本(页面中为 `kal_err_not_found`),
   `kal_env_loader` 为 `kal_err_not_found`,`kal_env_system` 为 `emscripten`;`kal_fs_rename_flags` 中

pkgs/o/os.lua

@@ -10,6 +10,9 @@
 -- C library, C++ run-time and loader are its platform's (openkal-platform,
 -- which mcpp 2026.10.27.1 selects for `<arch>-openkal'), and the package
 -- declares none of them.
+-- From 0.2.2 it builds for `wasm32-emscripten' over Emscripten's C library and
+-- openkal-emscripten 0.6.0, which its manifest names for that target; starting
+-- a program there fails at link, naming the openkal symbol.
 package = {
     spec        = "1",
     namespace   = "mcpplibs",
@@ -28,6 +31,13 @@ package = {
 
     xpm = {
         linux = {
+            ["0.2.2"] = {
+                url    = {
+                    GLOBAL = "https://github.com/mcpplibs/os/archive/refs/tags/0.2.2.tar.gz",
+                    CN     = "https://gitcode.com/mcpp-res/os/releases/download/0.2.2/os-0.2.2.tar.gz",
+                },
+                sha256 = "33c5d946c29de1ba7bacabe40fe6ee2f60bea0b25e62c0359f8c570b0f654e3e",
+            },
             ["0.2.1"] = {
                 url    = {
                     GLOBAL = "https://github.com/mcpplibs/os/archive/refs/tags/0.2.1.tar.gz",
@@ -56,6 +66,13 @@ package = {
             },
         },
         macosx = {
+            ["0.2.2"] = {
+                url    = {
+                    GLOBAL = "https://github.com/mcpplibs/os/archive/refs/tags/0.2.2.tar.gz",
+                    CN     = "https://gitcode.com/mcpp-res/os/releases/download/0.2.2/os-0.2.2.tar.gz",
+                },
+                sha256 = "33c5d946c29de1ba7bacabe40fe6ee2f60bea0b25e62c0359f8c570b0f654e3e",
+            },
             ["0.2.1"] = {
                 url    = {
                     GLOBAL = "https://github.com/mcpplibs/os/archive/refs/tags/0.2.1.tar.gz",
@@ -84,6 +101,13 @@ package = {
             },
         },
         windows = {
+            ["0.2.2"] = {
+                url    = {
+                    GLOBAL = "https://github.com/mcpplibs/os/archive/refs/tags/0.2.2.tar.gz",
+                    CN     = "https://gitcode.com/mcpp-res/os/releases/download/0.2.2/os-0.2.2.tar.gz",
+                },
+                sha256 = "33c5d946c29de1ba7bacabe40fe6ee2f60bea0b25e62c0359f8c570b0f654e3e",
+            },
             ["0.2.1"] = {
                 url    = {
                     GLOBAL = "https://github.com/mcpplibs/os/archive/refs/tags/0.2.1.tar.gz",

tests/examples/os/mcpp.toml

@@ -7,7 +7,7 @@ name    = "os-tests"
 version = "0.1.0"
 
 [dependencies.mcpplibs]
-os = "0.2.1"
+os = "0.2.2"
 
 [indices]
 mcpplibs = { path = "../../.." }