Fully disable debug UI unless MAGENTART_DEBUG_LOG is explicitly enabled.

Only define MAGENTART_DEBUG_LOG when the CMake option is ON, gate addDebugLog/writeDiskLog behind the preprocessor, remove the React debug overlay, and bump the ccache key so release builds recompile the AU host.

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: lmangani

.github/actions/setup-build/action.yml

@@ -17,7 +17,7 @@ runs:
       uses: actions/cache@v4
       with:
         path: ${{ github.workspace }}/.ccache
-        key: mrt2-au3-ccache-${{ runner.os }}-${{ hashFiles('CMakeLists.txt', 'magenta-realtime/core/**', 'MagentaRT_AudioUnit.mm', 'MagentaRT_AUHostApp.mm') }}
+        key: mrt2-au3-ccache-${{ runner.os }}-${{ hashFiles('CMakeLists.txt', 'magenta-realtime/core/**', 'MagentaRT_AudioUnit.mm', 'MagentaRT_AUHostApp.mm', 'react_ui/src/App.tsx') }}
         restore-keys: |
           mrt2-au3-ccache-${{ runner.os }}-
 

CMakeLists.txt

@@ -176,8 +176,6 @@ endfunction()
 option(MAGENTART_DEBUG_LOG "Enable AUv3 debug overlay + mrt_debug.log file writer" OFF)
 if(MAGENTART_DEBUG_LOG)
   add_compile_definitions(MAGENTART_DEBUG_LOG=1)
-else()
-  add_compile_definitions(MAGENTART_DEBUG_LOG=0)
 endif()
 
 add_custom_target(npm_install_root

MagentaRT_AudioUnit.mm

@@ -945,14 +945,14 @@ - (AUAudioUnit*)createAudioUnitWithComponentDescription:(AudioComponentDescripti
 }
 
 - (void)addDebugLog:(NSString*)msg {
-    dispatch_async(dispatch_get_main_queue(), ^{
 #if MAGENTART_DEBUG_LOG
+    dispatch_async(dispatch_get_main_queue(), ^{
         if (self->_debugLabel) {
             self->_debugLabel.stringValue = [self->_debugLabel.stringValue stringByAppendingFormat:@"%@\n", msg];
         }
-#endif
         [self sendStateUpdate:@{@"debugLog": msg}];
     });
+#endif
 }
 
 - (void)writeDiskLog:(NSString*)msg {
@@ -987,9 +987,13 @@ - (void)writeDiskLog:(NSString*)msg {
     if (accessGranted) {
         [modelsDir stopAccessingSecurityScopedResource];
     }
+    dispatch_async(dispatch_get_main_queue(), ^{
+        if (self->_debugLabel) {
+            self->_debugLabel.stringValue = [self->_debugLabel.stringValue stringByAppendingFormat:@"%@\n", msg];
+        }
+        [self sendStateUpdate:@{@"debugLog": msg}];
+    });
 #endif
-
-    [self sendStateUpdate:@{@"debugLog": msg}];
 }
 
 - (void)loadView {

react_ui/src/App.tsx

@@ -151,7 +151,6 @@ export default function App() {
   const [resourcesMissing, setResourcesMissing] = useState(false);
   const [resourcesProgress, setResourcesProgress] = useState<any>(null);
   const [isFetchingModels, setIsFetchingModels] = useState(true);
-  const [debugLogs, setDebugLogs] = useState<string[]>([]);
 
 
   const [bankStatus, setBankStatus] = useState([false, false, false]);
@@ -444,9 +443,6 @@ export default function App() {
       if (state.resourcesMissing !== undefined) setResourcesMissing(state.resourcesMissing);
       if (state.resourcesProgress !== undefined) setResourcesProgress(state.resourcesProgress);
       if (state.downloadPath !== undefined) setDownloadPath(state.downloadPath);
-      if (state.debugLog !== undefined) {
-        setDebugLogs(prev => [...prev.slice(-199), String(state.debugLog)]);
-      }
 
       if (state.bankStatus !== undefined) setBankStatus(state.bankStatus);
       if (state.midiSources !== undefined) setMidiSources(state.midiSources);
@@ -1402,33 +1398,6 @@ export default function App() {
         />
       )}
 
-      {debugLogs.length > 0 && (
-        <div
-          style={{
-            position: 'fixed',
-            right: 8,
-            bottom: 8,
-            width: 440,
-            maxHeight: 160,
-            overflow: 'auto',
-            padding: '8px 10px',
-            background: 'rgba(0,0,0,0.88)',
-            border: '1px solid rgba(113,250,222,0.35)',
-            borderRadius: 8,
-            fontFamily: 'ui-monospace, SFMono-Regular, Menlo, monospace',
-            fontSize: 10,
-            lineHeight: 1.35,
-            color: '#71fade',
-            zIndex: 10000,
-            pointerEvents: 'none',
-          }}
-        >
-          {debugLogs.map((line, i) => (
-            <div key={i}>{line}</div>
-          ))}
-        </div>
-      )}
-
     </div>
   );
 }