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/InlineTextFixtures.h

@@ -0,0 +1,46 @@
+#pragma once
+#include "SelectionCanvasFixtures.h"
+#include <QInputMethodEvent>
+
+// Shared by the inline editor's key and input tests.
+namespace {
+// A canvas that follows its session, as ContentView makes it.
+struct TextCanvas : Canvas {
+    TextCanvas()
+    {
+        QObject::connect(&session, &EditorSession::changed, canvas, [this] { canvas->synchronizeDisplay(); });
+        session.addBlankLayer();
+        session.selectTool(NavigationTool::type);
+        session.beginText(QPointF(20, 30), true);
+    }
+    InlineTextEditor &editor() const
+    {
+        if (!canvas->inlineTextEditor())
+            throw std::runtime_error("no editor");
+        return *canvas->inlineTextEditor();
+    }
+    QString content() const { return session.textDraft().value().style.content; }
+    int caret() const { return editor().caretPosition(); }
+    void key(Qt::Key key, Qt::KeyboardModifiers modifiers = Qt::NoModifier) { QTest::keyClick(canvas, key, modifiers); }
+    void type(const QString &text) { QTest::keyClicks(canvas, text); }
+    // A key whose text is more than one UTF-16 unit.
+    void typeText(const QString &text, Qt::KeyboardModifiers modifiers = Qt::NoModifier)
+    {
+        QKeyEvent press(QEvent::KeyPress, 0, modifiers, text);
+        QApplication::sendEvent(canvas, &press);
+    }
+    // Input methods: a preedit, or a commit replacing text.
+    void compose(const QString &preedit, const QList<QInputMethodEvent::Attribute> &attributes = {})
+    {
+        QInputMethodEvent event(preedit, attributes);
+        QApplication::sendEvent(canvas, &event);
+    }
+    void commit(const QString &text, int from = 0, int length = 0)
+    {
+        QInputMethodEvent event;
+        event.setCommitString(text, from, length);
+        QApplication::sendEvent(canvas, &event);
+    }
+    TextRange selection() const { return {std::min(editor().anchor(), editor().caretPosition()), std::max(editor().anchor(), editor().caretPosition())}; }
+};
+}