Pattern mute and so on

src/commands.rs

@@ -75,7 +75,6 @@ pub enum AppCommand {
     DuplicateSteps,
 
     // Pattern playback (staging)
-    CommitStagedChanges,
     ClearStagedChanges,
 
     // Project
@@ -156,6 +155,12 @@ pub enum AppCommand {
     PatternsBack,
     PatternsTogglePlay,
 
+    // Mute/Solo (staged)
+    StageMute { bank: usize, pattern: usize },
+    StageSolo { bank: usize, pattern: usize },
+    ClearMutes,  // Clears both staged and applied mutes
+    ClearSolos,  // Clears both staged and applied solos
+
     // UI state
     ClearMinimap,
     HideTitle,