OmaPhoto 1.0.0: the Linux port of Compositor

A layered image editor for Linux and Omarchy, ported from Compositor
(github.com/robbietilton/Compositor), whose Swift source is its
specification. It reads and writes Compositor's .comp projects.

Packages for Ubuntu, Fedora and Arch come from the release workflow;
scripts/install/ holds one install script per distribution family,
and flake.nix serves NixOS.

Co-Authored-By: Claude <noreply@anthropic.com>

packaging/arch/PKGBUILD

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+# Built from this checkout: run makepkg in linux/packaging/arch.
+pkgname=omaphoto
+pkgver=1.0.0
+pkgrel=1
+pkgdesc='Layered image editing for Linux, a port of Compositor'
+arch=('x86_64')
+url='https://github.com/ZacharyZhang-NY/OmaPhoto'
+license=('MIT')
+depends=('qt6-base' 'qt6-imageformats' 'libheif' 'libde265' 'fontconfig' 'onnxruntime' 'hicolor-icon-theme' 'shared-mime-info')
+makedepends=('cmake' 'ninja')
+source=('u2net.onnx::https://github.com/danielgatis/rembg/releases/download/v0.0.0/u2net.onnx')
+sha256sums=('8d10d2f3bb75ae3b6d527c77944fc5e7dcd94b29809d47a739a7a728a912b491')
+noextract=('u2net.onnx')
+
+build() {
+    cmake -S "$startdir/../.." -B build -G Ninja -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr -DOMAPHOTO_MODEL="$srcdir/u2net.onnx"
+    cmake --build build --target omaphoto
+}
+
+package() {
+    DESTDIR="$pkgdir" cmake --install build
+}

packaging/io.github.ZacharyZhang_NY.OmaPhoto.desktop

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+[Desktop Entry]
+Type=Application
+Name=OmaPhoto
+GenericName=Image Editor
+Comment=Edit and composite layered images
+Exec=omaphoto %F
+Icon=io.github.ZacharyZhang_NY.OmaPhoto
+Terminal=false
+Categories=Graphics;2DGraphics;RasterGraphics;
+MimeType=application/x-compositor-project;image/png;image/jpeg;image/heic;image/tiff;
+StartupWMClass=OmaPhoto

packaging/io.github.ZacharyZhang_NY.OmaPhoto.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<mime-info xmlns="http://www.freedesktop.org/standards/shared-mime-info">
+  <mime-type type="application/x-compositor-project">
+    <comment>OmaPhoto Project</comment>
+    <sub-class-of type="inode/directory"/>
+    <glob pattern="*.comp"/>
+  </mime-type>
+</mime-info>