fix(ds): address Copilot review — guard stylus press notification spam

- Add `ndsTouchActive` ivar to melonDS and DeSmuME 2015 bridge headers
- Guard `setLeftMouseButtonPressed:YES` so it fires only on touch-down,
  not on every move update (avoids spamming PVMouseButtonDidPress)
- Remove duplicate `@import PVCoreBridge` in PVMelonDSCore+Controls.mm

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: github-actions[bot]

Cores/Desmume2015/PVDesmume2015Core/Core/PVDesmume2015Core+Controls.mm

@@ -292,10 +292,15 @@ - (void)touchScreenAtPoint:(CGPoint)point {
     CGFloat normalizedX = point.x / 256.0;
     CGFloat normalizedY = point.y / 192.0;
     [self setMousePosition:CGPointMake(normalizedX, normalizedY)];
-    [self setLeftMouseButtonPressed:YES];
+    // Only transition to pressed on touch-down; avoid re-sending press notifications on move updates.
+    if (!ndsTouchActive) {
+        ndsTouchActive = YES;
+        [self setLeftMouseButtonPressed:YES];
+    }
 }
 
 - (void)releaseScreenTouch {
+    ndsTouchActive = NO;
     [self setLeftMouseButtonPressed:NO];
 }
 

Cores/Desmume2015/PVDesmume2015Core/Core/PVDesmume2015Core.h

@@ -22,6 +22,7 @@ __attribute__((visibility("default")))
     uint8_t padData[4][14]; //[PVDSButton.count];
 @public
     dispatch_queue_t _callbackQueue;
+    BOOL ndsTouchActive; // tracks whether stylus is currently down to avoid spamming PVMouseButtonDidPress
 }
 
 @end

Cores/melonDS/PVMelonDSCore/Core/PVMelonDSCore+Controls.mm

@@ -9,7 +9,6 @@
 #import <PVMelonDS/PVMelonDS.h>
 #import <Foundation/Foundation.h>
 @import PVCoreBridge;
-@import PVCoreBridge;
 
 #define DC_BTN_C        (1<<0)
 #define DC_BTN_B        (1<<1)
@@ -292,10 +291,15 @@ - (void)touchScreenAtPoint:(CGPoint)point {
     CGFloat normalizedX = point.x / 256.0;
     CGFloat normalizedY = point.y / 192.0;
     [self setMousePosition:CGPointMake(normalizedX, normalizedY)];
-    [self setLeftMouseButtonPressed:YES];
+    // Only transition to pressed on touch-down; avoid re-sending press notifications on move updates.
+    if (!ndsTouchActive) {
+        ndsTouchActive = YES;
+        [self setLeftMouseButtonPressed:YES];
+    }
 }
 
 - (void)releaseScreenTouch {
+    ndsTouchActive = NO;
     [self setLeftMouseButtonPressed:NO];
 }
 

Cores/melonDS/PVMelonDSCore/Core/PVMelonDSCore.h

@@ -25,6 +25,7 @@ __attribute__((visibility("default")))
 #pragma clang diagnostic pop
 @public
     dispatch_queue_t _callbackQueue;
+    BOOL ndsTouchActive; // tracks whether stylus is currently down to avoid spamming PVMouseButtonDidPress
 }
 
 @end