THIRD-PARTY SOURCE — the LGPL source offer for Simpler Tax 1.0.0
=================================================================

Simpler Tax's installer carries libvips as two ordinary DLLs
(lib\libvips-42.dll and lib\libvips-cpp-8.18.3.dll, inside the npm package
@img/sharp-win32-x64 0.35.3). libvips is licensed LGPL-3.0-or-later, which
entitles you to its complete source. This folder is that source, conveyed
the way the installer is conveyed — same server, no charge, no account
(LGPL-3.0 §4(d)(0), via GPLv3 §6(d)):

  vips-8.18.3.tar.xz
      the source of the exact libvips release the DLLs were built from
      25,422,084 bytes
      SHA-256 f41285b61bfb495605494f074ca341f7791a1d406e2f157dcea606ef1ae1b146

  build-win64-mxe-8.18.3.tar.gz
      the complete Windows build recipe those DLLs come from — libvips'
      own build-win64-mxe project at tag v8.18.3. Its build/vips.mk pins
      version 8.18.3, and its recipes pin the exact revision and checksum
      of every companion library compiled into the DLLs (glib, cairo,
      pango, harfbuzz, freetype, librsvg, libheif, libtiff, libpng,
      libwebp, mozjpeg, lcms2, libimagequant, zlib-ng and the rest — the
      list named by the package's own versions.json).
      76,915 bytes
      SHA-256 05c9f3708ce8afe820d4a401e8b270e30c8bd6270e75a6cfb97f918f2f087962

The recipe fetches each companion library's source from its canonical home
at the pinned revision and verifies it against the checksum written in the
recipe. If any of those upstream archives — or either file above — is ever
unavailable to you, write to support@simpler.asia and we will supply the
archives ourselves, at no charge, for at least three years from this
release (2026).

You can rebuild the DLLs from these files and substitute your own build:
put your libvips-42.dll in place of the shipped one and the application
will use it. The linking is dynamic, nothing is statically linked, and no
relink step is needed — which is the recombination LGPL-3.0 §4 exists to
guarantee. The texts of the LGPL-3.0 and the GPL-3.0 it incorporates ship
inside the installed application at engine-payload\licenses\.

Upstream homes, for reference (the files above do not depend on them):
  https://github.com/libvips/libvips
  https://github.com/libvips/build-win64-mxe
  https://github.com/lovell/sharp