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/realearn/modules/ROOT/pages/targets/track/set-stereo-pan-width.adoc

@@ -0,0 +1,14 @@
+= Target "Track: Set stereo pan width"
+
+Sets the track's width value (applicable if the track is in stereo pan mode).
+
+== Target-specific properties
+
+This target supports the following additional xref:further-concepts/target.adoc#target-property[target properties].
+
+[cols="m,1,3"]
+|===
+|Name|Type|Description
+
+|target.width.mcu | String | Width value tailored to one line on a Mackie Control LCD
+|===