fix(qt): wheel-lock sweep across plain-Item modal overlays

Plain-Item overlays get no modal grab, so a MouseArea that swallows
presses still lets the wheel scroll the page underneath (the rule and
its wording live in DiscoverConfigModal.qml). Every scrim and panel
swallow across the modal set now accepts the wheel; the modal Popups
(TrackInfo, CastPicker, AlbumInfo, QconnectDev, LocalMediaInfo) already
had the Overlay grab, and CoverLightbox — a non-modal Popup — gets its
own.

cc

crates/qbz-qt/qml/controls/DiscMetaModal.qml

@@ -52,6 +52,8 @@ Item {
         MouseArea {
             anchors.fill: parent
             onClicked: if (doc.applying !== true) QbzDiscMeta.close()
+            // Wheel-lock (the DiscoverConfigModal rule).
+            onWheel: function (wheel) { wheel.accepted = true }
         }
     }
 
@@ -66,7 +68,11 @@ Item {
         border.color: theme.borderSubtle
         clip: true
 
-        MouseArea { anchors.fill: parent }
+        MouseArea {
+            anchors.fill: parent
+            // Wheel-lock (the DiscoverConfigModal rule).
+            onWheel: function (wheel) { wheel.accepted = true }
+        }
 
         // ---- Header ---------------------------------------------------
         Item {

crates/qbz-qt/qml/controls/FolderModals.qml

@@ -138,6 +138,8 @@ Item {
             MouseArea {
                 anchors.fill: parent
                 onClicked: QbzFolderEdit.createClose()
+                // Wheel-lock (the DiscoverConfigModal rule).
+                onWheel: function (wheel) { wheel.accepted = true }
             }
         }
 
@@ -152,7 +154,11 @@ Item {
             border.color: theme.borderSubtle
 
             // FIRST child: swallows clicks so they never reach the scrim.
-            MouseArea { anchors.fill: parent }
+            MouseArea {
+                anchors.fill: parent
+                // Wheel-lock (the DiscoverConfigModal rule).
+                onWheel: function (wheel) { wheel.accepted = true }
+            }
 
             Column {
                 id: createCol
@@ -280,6 +286,8 @@ Item {
             MouseArea {
                 anchors.fill: parent
                 onClicked: QbzFolderEdit.editClose()
+                // Wheel-lock (the DiscoverConfigModal rule).
+                onWheel: function (wheel) { wheel.accepted = true }
             }
         }
 
@@ -293,7 +301,11 @@ Item {
             border.width: 1
             border.color: theme.borderSubtle
 
-            MouseArea { anchors.fill: parent }
+            MouseArea {
+                anchors.fill: parent
+                // Wheel-lock (the DiscoverConfigModal rule).
+                onWheel: function (wheel) { wheel.accepted = true }
+            }
 
             Column {
                 id: editCol

crates/qbz-qt/qml/controls/LinkResolverModal.qml

@@ -28,6 +28,8 @@ Item {
         MouseArea {
             anchors.fill: parent
             onClicked: QbzLink.close()
+            // Wheel-lock (the DiscoverConfigModal rule).
+            onWheel: function (wheel) { wheel.accepted = true }
         }
     }
 
@@ -41,7 +43,11 @@ Item {
         border.width: 1
         border.color: theme.borderSubtle
 
-        MouseArea { anchors.fill: parent }
+        MouseArea {
+            anchors.fill: parent
+            // Wheel-lock (the DiscoverConfigModal rule).
+            onWheel: function (wheel) { wheel.accepted = true }
+        }
 
         Column {
             id: panel

crates/qbz-qt/qml/controls/MyQbzModals.qml

@@ -89,6 +89,8 @@ Item {
             MouseArea {
                 anchors.fill: parent
                 onClicked: QbzMyQbz.createClose()
+                // Wheel-lock (the DiscoverConfigModal rule).
+                onWheel: function (wheel) { wheel.accepted = true }
             }
         }
         Rectangle {
@@ -101,7 +103,11 @@ Item {
             border.width: 1
             border.color: theme.borderSubtle
 
-            MouseArea { anchors.fill: parent }
+            MouseArea {
+                anchors.fill: parent
+                // Wheel-lock (the DiscoverConfigModal rule).
+                onWheel: function (wheel) { wheel.accepted = true }
+            }
 
             Column {
                 id: createCol
@@ -262,6 +268,8 @@ Item {
             MouseArea {
                 anchors.fill: parent
                 onClicked: QbzMyQbz.editClose()
+                // Wheel-lock (the DiscoverConfigModal rule).
+                onWheel: function (wheel) { wheel.accepted = true }
             }
         }
         Rectangle {
@@ -274,7 +282,11 @@ Item {
             border.width: 1
             border.color: theme.borderSubtle
 
-            MouseArea { anchors.fill: parent }
+            MouseArea {
+                anchors.fill: parent
+                // Wheel-lock (the DiscoverConfigModal rule).
+                onWheel: function (wheel) { wheel.accepted = true }
+            }
 
             Column {
                 id: editCol
@@ -428,6 +440,8 @@ Item {
             MouseArea {
                 anchors.fill: parent
                 onClicked: QbzMyQbz.mixClose()
+                // Wheel-lock (the DiscoverConfigModal rule).
+                onWheel: function (wheel) { wheel.accepted = true }
             }
         }
         Rectangle {
@@ -440,7 +454,11 @@ Item {
             border.width: 1
             border.color: theme.borderSubtle
 
-            MouseArea { anchors.fill: parent }
+            MouseArea {
+                anchors.fill: parent
+                // Wheel-lock (the DiscoverConfigModal rule).
+                onWheel: function (wheel) { wheel.accepted = true }
+            }
 
             Column {
                 id: mixCol

crates/qbz-qt/qml/controls/OfflineCacheChoiceModal.qml

@@ -68,6 +68,8 @@ Item {
         MouseArea {
             anchors.fill: parent
             onClicked: root.cancel()
+            // Wheel-lock (the DiscoverConfigModal rule).
+            onWheel: function (wheel) { wheel.accepted = true }
         }
     }
 
@@ -92,7 +94,11 @@ Item {
         border.width: 1
         border.color: theme.borderSubtle
 
-        MouseArea { anchors.fill: parent }
+        MouseArea {
+            anchors.fill: parent
+            // Wheel-lock (the DiscoverConfigModal rule).
+            onWheel: function (wheel) { wheel.accepted = true }
+        }
 
         Column {
             id: content

crates/qbz-qt/qml/controls/PlaylistCreateModal.qml

@@ -168,6 +168,8 @@ Item {
             MouseArea {
                 anchors.fill: parent
                 onClicked: QbzPlaylistEdit.closeCreate()
+                // Wheel-lock (the DiscoverConfigModal rule).
+                onWheel: function (wheel) { wheel.accepted = true }
             }
         }
 
@@ -182,7 +184,11 @@ Item {
             border.color: theme.borderSubtle
 
             // FIRST child: swallows clicks so they never reach the scrim.
-            MouseArea { anchors.fill: parent }
+            MouseArea {
+                anchors.fill: parent
+                // Wheel-lock (the DiscoverConfigModal rule).
+                onWheel: function (wheel) { wheel.accepted = true }
+            }
 
             Column {
                 id: col

crates/qbz-qt/qml/controls/PlaylistEditModal.qml

@@ -171,6 +171,8 @@ Item {
             MouseArea {
                 anchors.fill: parent
                 onClicked: QbzPlaylistEdit.close()
+                // Wheel-lock (the DiscoverConfigModal rule).
+                onWheel: function (wheel) { wheel.accepted = true }
             }
         }
 
@@ -185,7 +187,11 @@ Item {
             border.color: theme.borderSubtle
 
             // FIRST child: swallows clicks so they never reach the scrim.
-            MouseArea { anchors.fill: parent }
+            MouseArea {
+                anchors.fill: parent
+                // Wheel-lock (the DiscoverConfigModal rule).
+                onWheel: function (wheel) { wheel.accepted = true }
+            }
 
             Column {
                 id: col

crates/qbz-qt/qml/controls/PlaylistImportModal.qml

@@ -90,6 +90,8 @@ Item {
         MouseArea {
             anchors.fill: parent
             onClicked: QbzPlaylistImport.close()
+            // Wheel-lock (the DiscoverConfigModal rule).
+            onWheel: function (wheel) { wheel.accepted = true }
         }
     }
 
@@ -106,7 +108,11 @@ Item {
         border.width: 1
         border.color: theme.borderSubtle
         // Swallow clicks so they never reach the scrim.
-        MouseArea { anchors.fill: parent }
+        MouseArea {
+            anchors.fill: parent
+            // Wheel-lock (the DiscoverConfigModal rule).
+            onWheel: function (wheel) { wheel.accepted = true }
+        }
 
         readonly property int contentWidth: card.width - 48
 

crates/qbz-qt/qml/controls/QbzConfirmModal.qml

@@ -129,6 +129,8 @@ Item {
         MouseArea {
             anchors.fill: parent
             onClicked: root._cancel()
+            // Wheel-lock (the DiscoverConfigModal rule).
+            onWheel: function (wheel) { wheel.accepted = true }
         }
     }
 
@@ -158,7 +160,11 @@ Item {
 
         // Swallow clicks so they never reach the scrim (the Slint's empty
         // panel TouchArea, :1030).
-        MouseArea { anchors.fill: parent }
+        MouseArea {
+            anchors.fill: parent
+            // Wheel-lock (the DiscoverConfigModal rule).
+            onWheel: function (wheel) { wheel.accepted = true }
+        }
 
         Column {
             id: panelCol

crates/qbz-qt/qml/controls/RipProgressModal.qml

@@ -40,7 +40,12 @@ Item {
     Rectangle {
         anchors.fill: parent
         color: "#bf000000"
-        MouseArea { anchors.fill: parent; onClicked: QbzLocal.ripPanel(false) }
+        MouseArea {
+            anchors.fill: parent
+            onClicked: QbzLocal.ripPanel(false)
+            // Wheel-lock (the DiscoverConfigModal rule).
+            onWheel: function (wheel) { wheel.accepted = true }
+        }
     }
 
     Rectangle {
@@ -54,7 +59,11 @@ Item {
         border.color: theme.borderSubtle
         clip: true
 
-        MouseArea { anchors.fill: parent }
+        MouseArea {
+            anchors.fill: parent
+            // Wheel-lock (the DiscoverConfigModal rule).
+            onWheel: function (wheel) { wheel.accepted = true }
+        }
 
         // ---- Header -----------------------------------------------------
         Item {

crates/qbz-qt/qml/controls/RipWizardModal.qml

@@ -117,7 +117,12 @@ Item {
     Rectangle {
         anchors.fill: parent
         color: "#bf000000"
-        MouseArea { anchors.fill: parent; onClicked: QbzLocal.ripWizardClose() }
+        MouseArea {
+            anchors.fill: parent
+            onClicked: QbzLocal.ripWizardClose()
+            // Wheel-lock (the DiscoverConfigModal rule).
+            onWheel: function (wheel) { wheel.accepted = true }
+        }
     }
 
     Rectangle {
@@ -131,7 +136,11 @@ Item {
         border.color: theme.borderSubtle
         clip: true
 
-        MouseArea { anchors.fill: parent }
+        MouseArea {
+            anchors.fill: parent
+            // Wheel-lock (the DiscoverConfigModal rule).
+            onWheel: function (wheel) { wheel.accepted = true }
+        }
 
         // ---- Header + step dots ----------------------------------------
         Item {

crates/qbz-qt/qml/controls/TagEditorModal.qml

@@ -288,6 +288,8 @@ Item {
             anchors.fill: parent
             enabled: !root.busy
             onClicked: root.closeEditor()
+            // Wheel-lock (the DiscoverConfigModal rule).
+            onWheel: function (wheel) { wheel.accepted = true }
         }
     }
 
@@ -302,7 +304,11 @@ Item {
         border.color: theme.borderStrong
         clip: true
 
-        MouseArea { anchors.fill: parent }
+        MouseArea {
+            anchors.fill: parent
+            // Wheel-lock (the DiscoverConfigModal rule).
+            onWheel: function (wheel) { wheel.accepted = true }
+        }
 
         Item {
             id: header

crates/qbz-qt/qml/controls/TrackReplacementModal.qml

@@ -78,6 +78,8 @@ Item {
         MouseArea {
             anchors.fill: parent
             onClicked: if (!root.applying) QbzTrackReplace.close()
+            // Wheel-lock (the DiscoverConfigModal rule).
+            onWheel: function (wheel) { wheel.accepted = true }
         }
     }
 
@@ -93,7 +95,11 @@ Item {
         clip: true
 
         // Swallow clicks so they never reach the scrim.
-        MouseArea { anchors.fill: parent }
+        MouseArea {
+            anchors.fill: parent
+            // Wheel-lock (the DiscoverConfigModal rule).
+            onWheel: function (wheel) { wheel.accepted = true }
+        }
 
         Column {
             id: panel

crates/qbz-qt/qml/settings/DacWizardModal.qml

@@ -163,6 +163,8 @@ Item {
         MouseArea {
             anchors.fill: parent
             onClicked: QbzDacWizard.close()
+            // Wheel-lock (the DiscoverConfigModal rule).
+            onWheel: function (wheel) { wheel.accepted = true }
         }
     }
 
@@ -178,7 +180,11 @@ Item {
         border.width: 1
         border.color: theme.borderSubtle
         // Swallow clicks so they never reach the scrim.
-        MouseArea { anchors.fill: parent }
+        MouseArea {
+            anchors.fill: parent
+            // Wheel-lock (the DiscoverConfigModal rule).
+            onWheel: function (wheel) { wheel.accepted = true }
+        }
 
         readonly property int contentWidth: card.width - 48
 

crates/qbz-qt/qml/settings/LibFolderEditModal.qml

@@ -96,6 +96,8 @@ Item {
         MouseArea {
             anchors.fill: parent
             onClicked: root.close()
+            // Wheel-lock (the DiscoverConfigModal rule).
+            onWheel: function (wheel) { wheel.accepted = true }
         }
     }
 
@@ -121,7 +123,11 @@ Item {
         border.color: theme.borderSubtle
 
         // Swallow clicks so they never reach the scrim.
-        MouseArea { anchors.fill: parent }
+        MouseArea {
+            anchors.fill: parent
+            // Wheel-lock (the DiscoverConfigModal rule).
+            onWheel: function (wheel) { wheel.accepted = true }
+        }
 
         Column {
             id: body

crates/qbz-qt/qml/shell/AppShell.qml

@@ -577,6 +577,8 @@ Rectangle {
         MouseArea {
             anchors.fill: parent
             onClicked: root.textModalOpen = false
+            // Wheel-lock (the DiscoverConfigModal rule).
+            onWheel: function (wheel) { wheel.accepted = true }
         }
         Rectangle {
             anchors.centerIn: parent
@@ -586,7 +588,11 @@ Rectangle {
             color: theme.surfaceCard
             border.width: 1
             border.color: theme.borderSubtle
-            MouseArea { anchors.fill: parent }
+            MouseArea {
+                anchors.fill: parent
+                // Wheel-lock (the DiscoverConfigModal rule).
+                onWheel: function (wheel) { wheel.accepted = true }
+            }
             Column {
                 anchors.fill: parent
                 anchors.margins: 24

crates/qbz-qt/qml/shell/CustomizeShortcutsModal.qml

@@ -131,6 +131,8 @@ Item {
             MouseArea {
                 anchors.fill: parent
                 onClicked: root._close()
+                // Wheel-lock (the DiscoverConfigModal rule).
+                onWheel: function (wheel) { wheel.accepted = true }
             }
         }
 
@@ -160,7 +162,11 @@ Item {
             border.color: theme.borderSubtle
 
             // FIRST child: swallows clicks so they never reach the scrim.
-            MouseArea { anchors.fill: parent }
+            MouseArea {
+                anchors.fill: parent
+                // Wheel-lock (the DiscoverConfigModal rule).
+                onWheel: function (wheel) { wheel.accepted = true }
+            }
 
             // --- Header: title + "N modified" badge + X (Slint :208-261) --
             // NO keyboard icon here — the editor header has none (trap 6).

crates/qbz-qt/qml/shell/KeyboardShortcutsModal.qml

@@ -127,6 +127,8 @@ Item {
             MouseArea {
                 anchors.fill: parent
                 onClicked: root._close()
+                // Wheel-lock (the DiscoverConfigModal rule).
+                onWheel: function (wheel) { wheel.accepted = true }
             }
         }
 
@@ -159,7 +161,11 @@ Item {
 
             // FIRST child: swallows clicks so they never reach the scrim
             // (the Slint's empty panel TouchArea, :137).
-            MouseArea { anchors.fill: parent }
+            MouseArea {
+                anchors.fill: parent
+                // Wheel-lock (the DiscoverConfigModal rule).
+                onWheel: function (wheel) { wheel.accepted = true }
+            }
 
             // --- Header: icon + title + X (Slint :143-184) ---------------
             Item {

crates/qbz-qt/qml/shell/LogViewerModal.qml

@@ -83,6 +83,8 @@ Item {
         MouseArea {
             anchors.fill: parent
             onClicked: QbzShell.logClose()
+            // Wheel-lock (the DiscoverConfigModal rule).
+            onWheel: function (wheel) { wheel.accepted = true }
         }
     }
 
@@ -109,7 +111,11 @@ Item {
         border.color: theme.borderSubtle
 
         // Swallow clicks so they never reach the closing backdrop.
-        MouseArea { anchors.fill: parent }
+        MouseArea {
+            anchors.fill: parent
+            // Wheel-lock (the DiscoverConfigModal rule).
+            onWheel: function (wheel) { wheel.accepted = true }
+        }
 
         // ANCHORED, not a Column. The body is the only stretch row and its
         // height depends on which optional rows are mounted (the advanced

crates/qbz-qt/qml/shell/ReportIssueModal.qml

@@ -45,6 +45,8 @@ Item {
         MouseArea {
             anchors.fill: parent
             onClicked: root.open = false
+            // Wheel-lock (the DiscoverConfigModal rule).
+            onWheel: function (wheel) { wheel.accepted = true }
         }
     }
 
@@ -69,7 +71,11 @@ Item {
         border.color: theme.borderSubtle
 
         // Swallow clicks so the scrim below does not close the modal.
-        MouseArea { anchors.fill: parent }
+        MouseArea {
+            anchors.fill: parent
+            // Wheel-lock (the DiscoverConfigModal rule).
+            onWheel: function (wheel) { wheel.accepted = true }
+        }
 
         Column {
             anchors.fill: parent

crates/qbz-qt/qml/shell/WhatsNewModal.qml

@@ -78,6 +78,8 @@ Item {
         MouseArea {
             anchors.fill: parent
             onClicked: QbzAbout.whatsNewClose()
+            // Wheel-lock (the DiscoverConfigModal rule).
+            onWheel: function (wheel) { wheel.accepted = true }
         }
     }
 
@@ -101,7 +103,11 @@ Item {
         border.width: 1
         border.color: theme.borderSubtle
 
-        MouseArea { anchors.fill: parent }
+        MouseArea {
+            anchors.fill: parent
+            // Wheel-lock (the DiscoverConfigModal rule).
+            onWheel: function (wheel) { wheel.accepted = true }
+        }
 
         Item {
             id: stack

crates/qbz-qt/qml/shell/WindowsDisclaimerModal.qml

@@ -94,7 +94,11 @@ Item {
         // No click-through close. Unlike the other modals this one is the
         // first thing a new user sees and says what is not promised; a stray
         // click on the scrim should not dismiss it.
-        MouseArea { anchors.fill: parent }
+        MouseArea {
+            anchors.fill: parent
+            // Wheel-lock (the DiscoverConfigModal rule).
+            onWheel: function (wheel) { wheel.accepted = true }
+        }
     }
 
     Rectangle {
@@ -115,7 +119,11 @@ Item {
         border.width: 1
         border.color: theme.borderSubtle
 
-        MouseArea { anchors.fill: parent }
+        MouseArea {
+            anchors.fill: parent
+            // Wheel-lock (the DiscoverConfigModal rule).
+            onWheel: function (wheel) { wheel.accepted = true }
+        }
 
         Item {
             anchors.fill: parent

crates/qbz-qt/qml/views/CoverLightbox.qml

@@ -56,6 +56,10 @@ Popup {
         MouseArea {
             anchors.fill: parent
             onClicked: root.close()
+            // Wheel-lock (the DiscoverConfigModal rule): the Popup is not
+            // `modal`, so nothing grabs the wheel for it — without this the
+            // page kept scrolling behind the lightbox.
+            onWheel: function (wheel) { wheel.accepted = true }
         }
 
         // The 90% viewport the artwork is fitted into, so it never touches