MIDI Documentation and optional mouse event support

src/views/help_view.rs

@@ -59,6 +59,11 @@ const DOCS: &[DocEntry] = &[
     ),
     Topic("Space & Time", include_str!("../../docs/engine_space.md")),
     Topic("Words & Sounds", include_str!("../../docs/engine_words.md")),
+    // MIDI
+    Section("MIDI"),
+    Topic("Introduction", include_str!("../../docs/midi_intro.md")),
+    Topic("MIDI Output", include_str!("../../docs/midi_output.md")),
+    Topic("MIDI Input", include_str!("../../docs/midi_input.md")),
 ];
 
 pub fn topic_count() -> usize {

src/views/render.rs

@@ -71,6 +71,12 @@ fn compute_stack_display(lines: &[String], editor: &cagire_ratatui::Editor, cach
             fill: false,
             nudge_secs: 0.0,
             cc_memory: None,
+            #[cfg(feature = "desktop")]
+            mouse_x: 0.5,
+            #[cfg(feature = "desktop")]
+            mouse_y: 0.5,
+            #[cfg(feature = "desktop")]
+            mouse_down: 0.0,
         };
 
         match forth.evaluate(&script, &ctx) {