fix: sync template sysroot, add script

template/README.md

@@ -42,12 +42,13 @@ myapp/
 │   └── cxxrt.cpp                C++ new/delete runtime (keep this)
 ├── sysroot/
 │   ├── include/
-│   │   ├── montauk/             syscall.h, heap.h, string.h, config.h, toml.h, user.h
-│   │   ├── gui/                 gui.hpp, canvas.hpp, truetype.hpp, widgets.hpp, svg.hpp, ...
+│   │   ├── montauk/             syscall.h, heap.h, thread.h, string.h, config.h, toml.h, user.h
+│   │   ├── gui/                 gui.hpp, canvas.hpp, truetype.hpp, widgets.hpp, mtk.hpp, dialogs.hpp, ...
 │   │   ├── http/                http.hpp (HTTP GET/POST/etc. wrapper)
 │   │   ├── tls/                 tls.hpp (HTTPS/TLS, for USE_TLS=1)
 │   │   ├── Api/                 Syscall.hpp (low-level syscall numbers)
 │   │   ├── libc/                stdio.h, stdlib.h, string.h, ...
+│   │   ├── libloader/           libloader.h (shared library loading, used by gui/dialogs.hpp)
 │   │   ├── bearssl*.h           BearSSL headers (for USE_TLS=1)
 │   │   └── (freestanding C/C++ standard headers)
 │   └── lib/
@@ -74,3 +75,11 @@ myapp/
 - No exceptions, no RTTI, 32 KiB user stack
 
 `USE_CRT=1` is meant for plain C ports and other code that already expects `main(argc, argv)`. The current CRT does not run global constructors or destructors yet, so keep using `_start()` for the default C++ template flow.
+
+## Keeping the SDK Current
+
+The sysroot is a snapshot of the MontaukOS tree (headers from `programs/include` plus the freestanding toolchain headers, libraries from `programs/lib`). To refresh it after kernel or library changes, run from the MontaukOS project root:
+
+```bash
+make programs && ./scripts/sync_template.sh
+```