kde/gui: fix binding loop and Column anchor errors

- Remove chatPane property from delegate (was shadowing id, causing binding loop)
- Remove contentArea MouseArea from inside Column (invalid anchor)
- Simplify hovered property to use only headerArea
- Edit button now copies to clipboard instead of trying to access chatPane

kde/gui/ChatBlockDelegate.qml

@@ -33,7 +33,7 @@ Column {
     }
 
     // Show action buttons on hover
-    property bool hovered: headerArea.containsMouse || contentArea.containsMouse
+    property bool hovered: headerArea.containsMouse
 
     // Header color based on block type and theme
     function headerColor() {
@@ -171,12 +171,11 @@ Column {
                     implicitHeight: 22
                     visible: blockType === "user"
                     ToolTip.visible: hovered
-                    ToolTip.text: "Edit & Resend"
+                    ToolTip.text: "Copy to input for editing"
                     onClicked: {
                         var content = getBlockPlainText()
-                        // Find the prompt input and set its text
-                        // This requires the parent ChatPane to expose the input
-                        chatPane.setPromptText(content)
+                        // Copy to clipboard - user can paste into input
+                        if (content) clipboard.copyText(content)
                     }
                 }
             }
@@ -190,14 +189,6 @@ Column {
         visible: root.blockExpanded
         spacing: 4
 
-        MouseArea {
-            id: contentArea
-            anchors.fill: parent
-            hoverEnabled: true
-            propagateComposedEvents: true
-            acceptedButtons: Qt.NoButton
-        }
-
         // Fast path: single TextEdit for the concatenated HTML.
         // Diagrams are handled separately via the segments list.
         TextEdit {

kde/gui/ChatPane.qml

@@ -150,8 +150,6 @@ Item {
 
                     delegate: ChatBlockDelegate {
                         width: chatView.width - 8
-                        // Pass reference to chatPane for Edit & Resend
-                        property var chatPane: chatPane
                     }
                 }