compat.glfw: the Win32 backend states the system interface it calls (mcpp:kernel-abi=windows)

As the Linux row states glibc. The MSVC row, the MinGW-w64 payload and the
mingw-w64-sysroot base answer it under every mcpp the index admits, since the
payload's kernel-abi is the target's system. A Windows identity whose system
interface is openkal (openkal-musl over openkal-windows) has no window system
and is refused at resolution, naming the requirement, instead of failing in
<windows.h>. A requirement on c-abi=ucrt would refuse this package on MSVC
under mcpp 2026.11.3.1 to 2026.11.10.1, which answer msvc there.

Author: Sunrisepeak

CHANGELOG.md

@@ -9,6 +9,11 @@
 
 ### Fixed
 
+- **compat.glfw：Win32 后端以 `requires = { "mcpp:kernel-abi=windows" }` 陈述它直接调用的系统接口。** MSVC 行、MinGW-w64 载荷与
+  mingw-w64-sysroot 基座都回答 `windows`，且本索引接受的每个 mcpp 版本都如此回答（载荷的 kernel-abi 即目标的系统）；openkal-musl
+  经 openkal-windows 的 Windows 身份回答 `openkal`，没有窗口系统，在解析期以该要求被拒绝，不再在 `<windows.h>` 处编译失败。
+  要求写在 `c-abi=ucrt` 上则会使 2026.11.3.1–2026.11.10.1 在 MSVC 上拒绝本包（这些版本对 MSVC 回答 `msvc`）。
+
 - **compat.mimalloc：ok 映像不再链接 `-lpthread`、`-lrt`，Linux 不再链接 `-latomic`。** ok 映像（`<arch>-openkal`）原先读 `linux`
   块，链接时找不到这两个归档；新增 `openkal` 块，不列链接参数。`-latomic` 上游只在找到时才链接，mimalloc 的原子操作在本索引
   构建的各架构上都是无锁的，LLVM 工具链在图中 C 库之上没有这个归档。

pkgs/c/compat.glfw.lua

@@ -155,6 +155,17 @@ package = {
             },
         },
         windows = {
+            -- THE WIN32 BACKEND CALLS THE WINDOWS SYSTEM INTERFACE DIRECTLY
+            -- (<windows.h>, user32, gdi32): a requirement on the kernel-abi
+            -- layer of the target side (mcpp SPEC-002 §2.2), as the Linux row
+            -- states glibc. Every route that has the Win32 API answers it --
+            -- the MSVC row, the MinGW-w64 payload and the mingw-w64-sysroot
+            -- base -- under every mcpp the index admits, since the answer is
+            -- the target's system. A Windows identity whose system interface
+            -- is another (openkal-musl over openkal-windows answers `openkal`)
+            -- has no window system, and is refused at resolution, naming this
+            -- requirement.
+            requires = { "mcpp:kernel-abi=windows" },
             cflags = { "-D_GLFW_WIN32", "-DUNICODE", "-D_UNICODE" },
             sources = {
                 "src/win32_time.c",