Reorganize top-level directories with clearer naming convention

app -> app-desktop-macos, presets -> app-presets, server -> remote-server,
daw-config-reaper -> osc-config-daw, plugin-reaper-realearn -> plugin-reaper-relearn.
Updated run.py and presets.py path references accordingly.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

plugin-reaper-relearn/doc/playtime/modules/ROOT/pages/user-interface.adoc

@@ -0,0 +1,41 @@
+= User interface
+
+This section provides a detailed overview of all elements in Playtime's user interface.
+
+== Main screen
+
+Playtime's design centers around a single, large _main screen_, offering streamlined access to its most essential features.
+
+.Main screen
+image::generated/screenshots/main/main-screen.png[]
+
+== Main screen areas
+
+The main screen is divided into distinct areas, each serving a specific purpose.
+
+.Areas of the main screen
+image::generated/screenshots/main/main-screen-areas.png[]
+
+xref:user-interface/title-bar.adoc[]::
+include::partial$user-interface/title-bar-desc.adoc[]
+
+xref:user-interface/navigation-bar.adoc[]::
+include::partial$user-interface/nav-bar-desc.adoc[]
+
+xref:user-interface/toolbar.adoc[]::
+include::partial$user-interface/toolbar-desc.adoc[]
+
+xref:user-interface/content-panel.adoc[]::
+include::partial$user-interface/content-panel-desc.adoc[]
+
+xref:user-interface/matrix-area.adoc[]::
+include::partial$user-interface/matrix-area-desc.adoc[]
+
+xref:user-interface/track-area.adoc[]::
+include::partial$user-interface/track-area-desc.adoc[]
+
+xref:user-interface/inspector.adoc[]::
+include::partial$user-interface/inspector-desc.adoc[]
+
+xref:user-interface/info-panel.adoc[]::
+include::partial$user-interface/info-panel-desc.adoc[]