Block the player dismiss pan from starting on side sliders

The window-level dismiss pan recognizes before SwiftUI's slider
DragGesture sets isAdjustingPlayerSliders, so dragging volume or
brightness often dismissed the player instead. Side sliders now publish
their frames and the pan refuses to begin from touches inside them.

Yattee/Services/Navigation/NavigationCoordinator.swift

@@ -144,6 +144,12 @@ final class NavigationCoordinator {
     /// otherwise be cancelled and dismiss the player instead).
     var panelResizeGrabberFrame: CGRect = .zero
 
+    /// Volume/brightness side slider frames in screen coordinates, keyed by
+    /// edge (leading = true). Touches inside must not start the sheet dismiss
+    /// pan — the window pan recognizes before SwiftUI's slider DragGesture
+    /// sets `isAdjustingPlayerSliders`, so the flag alone loses the race.
+    var playerSideSliderFrames: [Bool: CGRect] = [:]
+
     /// Corner layout: width of the trailing screen-edge strip reserved for
     /// the side column reveal swipe while the column is collapsed (0 when
     /// not collapsed) — the seek pan must not begin from inside it.

Yattee/Views/Player/ExpandedPlayerWindow.swift

@@ -175,6 +175,7 @@ private final class DragToDismissGestureHandler: NSObject, UIGestureRecognizerDe
     var getCornerBelowPanelFrame: (() -> CGRect)?
     /// Returns the panel resize grabber strip frame in screen coordinates (blocks dismiss pan)
     var getPanelResizeGrabberFrame: (() -> CGRect)?
+    var getPlayerSideSliderFrames: (() -> [CGRect])?
     /// Returns whether the portrait panel is currently visible (not hidden off-screen)
     var isPortraitPanelVisible: (() -> Bool)?
     /// Returns the progress bar frame in screen coordinates (for gesture conflict resolution)
@@ -383,6 +384,13 @@ private final class DragToDismissGestureHandler: NSObject, UIGestureRecognizerDe
             return false
         }
 
+        // ...or when the touch starts on a slider: the flag above is set by
+        // SwiftUI's DragGesture, which fires after this pan recognizes
+        let sliderTouch = panGesture.location(in: nil)
+        if (getPlayerSideSliderFrames?() ?? []).contains(where: { $0.contains(sliderTouch) }) {
+            return false
+        }
+
         // Don't begin dismiss gesture when dragging portrait panel
         if isPanelDragging?() == true {
             return false
@@ -871,6 +879,9 @@ final class ExpandedPlayerWindowManager {
         handler.getPanelResizeGrabberFrame = { [weak self] in
             self?.appEnvironment?.navigationCoordinator.panelResizeGrabberFrame ?? .zero
         }
+        handler.getPlayerSideSliderFrames = { [weak self] in
+            self?.appEnvironment?.navigationCoordinator.playerSideSliderFrames.values.filter { !$0.isEmpty } ?? []
+        }
         handler.isPortraitPanelVisible = { [weak self] in
             self?.appEnvironment?.navigationCoordinator.isPortraitPanelVisible ?? true
         }

Yattee/Views/Player/PlayerControlsView.swift

@@ -1443,6 +1443,21 @@ struct PlayerControlsView: View {
             .modifier(SideSliderBackgroundModifier(buttonBackground: buttonBackground, theme: theme))
             .opacity(playerState.isControlsLocked ? 0.5 : 1.0)
             .allowsHitTesting(!playerState.isControlsLocked)
+            // Publish the slider frame (with slop) so the window-level dismiss
+            // pan never begins from a slider drag
+            .background {
+                GeometryReader { proxy in
+                    let isActive = shouldShowControls && !playerState.isControlsLocked
+                    let frame = isActive ? proxy.frame(in: .global).insetBy(dx: -12, dy: -12) : .zero
+                    Color.clear
+                        .onChange(of: frame, initial: true) { _, frame in
+                            appEnvironment?.navigationCoordinator.playerSideSliderFrames[isLeading] = frame
+                        }
+                        .onDisappear {
+                            appEnvironment?.navigationCoordinator.playerSideSliderFrames[isLeading] = nil
+                        }
+                }
+            }
         }
     }