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>

tests/InlineTextDrawFixtures.h

@@ -0,0 +1,60 @@
+#pragma once
+#include "SelectionCanvasFixtures.h"
+#include <QInputMethodEvent>
+
+// Shared by the inline editor's drawing tests: red text, pixels.
+namespace {
+struct DrawnText : Canvas {
+    DrawnText()
+    {
+        QObject::connect(&session, &EditorSession::changed, canvas, [this] { canvas->synchronizeDisplay(); });
+        session.addBlankLayer();
+        session.selectTool(NavigationTool::type);
+        session.setPaletteColor(PaletteColor{1, 0, 0}, false);
+    }
+    InlineTextEditor &editor() const
+    {
+        if (!canvas->inlineTextEditor())
+            throw std::runtime_error("no editor");
+        return *canvas->inlineTextEditor();
+    }
+    // New red text, applied: its layer is active.
+    QUuid text(QPointF at, const QString &content)
+    {
+        session.beginText(at, true);
+        QTest::keyClicks(canvas, content);
+        if (!session.finishText())
+            throw std::runtime_error("the text was refused");
+        return session.activeLayerID().value();
+    }
+    QImage grab() const { return canvas->grab().toImage().convertToFormat(QImage::Format_RGB32); }
+    // A layer point on screen, through the editor's own box.
+    QPoint onScreen(QPointF logical) const
+    {
+        const QPointF point = editor().boxTransform().map(logical);
+        return QPoint(int(std::floor(point.x())), int(std::floor(point.y())));
+    }
+};
+
+inline bool reddish(QColor colour)
+{
+    return colour.red() > 128 && colour.green() < 90 && colour.blue() < 90;
+}
+
+inline bool greenish(QColor colour)
+{
+    return colour.green() > 128 && colour.red() < 90 && colour.blue() < 90;
+}
+
+inline QRect where(const QImage &image, bool (*test)(QColor))
+{
+    QRect found;
+    for (int y = 0; y < image.height(); ++y) {
+        for (int x = 0; x < image.width(); ++x) {
+            if (test(image.pixelColor(x, y)))
+                found |= QRect(x, y, 1, 1);
+        }
+    }
+    return found;
+}
+}