Revert "gui: remove cut/copy/paste from prompt input"

This reverts commit eb09a95a64.

kde/gui/ChatPane.qml

@@ -406,7 +406,7 @@ Item {
                                 if (!ollie.activeSessionId) return "No session"
                                 if (!ollie.activeAgentId) return "No agent"
                                 if (ollie.activeSessionPaused) return "Session paused"
-                                return "B1=sel  B2=exec  B3=plumb"
+                                return "B1=sel  B2=exec  B3=plumb  B1+B2=cut  B1+B3=paste"
                             }
                             enabled: ollie.daemonConnected && ollie.activeSessionId !== "" && ollie.activeAgentId !== "" && !ollie.activeSessionPaused
                             wrapMode: TextEdit.Wrap
@@ -432,10 +432,12 @@ Item {
                         }
                     }
 
-                    // Acme-style mouse handling overlay
+                    // Acme-style mouse chording overlay
                     // B1 = select (handled by TextArea)
                     // B2 = execute selection
                     // B3 = plumb selection / context menu
+                    // B1+B2 = cut (snarf)
+                    // B1+B3 = paste
                     MouseArea {
                         id: chordArea
                         anchors.fill: parent
@@ -443,12 +445,46 @@ Item {
                         propagateComposedEvents: true
                         cursorShape: Qt.IBeamCursor
 
+                        // Track if B1 (left) is currently held for chord detection
+                        property bool leftHeld: false
+
+                        // We can't directly detect B1 here since TextArea handles it,
+                        // but we can check mouse.buttons in the handlers
+                        onPressed: function(mouse) {
+                            // Check if this is a chord (B1 already held)
+                            if (mouse.buttons & Qt.LeftButton) {
+                                leftHeld = true
+                                if (mouse.button === Qt.MiddleButton) {
+                                    // B1+B2 = cut
+                                    promptInput.cut()
+                                    mouse.accepted = true
+                                    return
+                                } else if (mouse.button === Qt.RightButton) {
+                                    // B1+B3 = paste
+                                    promptInput.paste()
+                                    mouse.accepted = true
+                                    return
+                                }
+                            }
+                            leftHeld = false
+                            mouse.accepted = false  // Let it propagate for non-chord
+                        }
+
                         onClicked: function(mouse) {
+                            // Only handle non-chord clicks
+                            if (leftHeld) {
+                                leftHeld = false
+                                return
+                            }
+
                             if (mouse.button === Qt.MiddleButton) {
                                 // B2: Execute selection as prompt
                                 var sel = promptInput.selectedText
                                 if (sel && sel.trim() !== "") {
                                     ollie.submit(sel.trim())
+                                } else {
+                                    // No selection - paste from clipboard and execute?
+                                    // Or just ignore. For now, ignore.
                                 }
                             } else if (mouse.button === Qt.RightButton) {
                                 // B3: Plumb selection or show context menu
@@ -460,6 +496,10 @@ Item {
                                 }
                             }
                         }
+
+                        onReleased: {
+                            leftHeld = false
+                        }
                     }
 
                     Menu {
@@ -481,6 +521,22 @@ Item {
                             }
                         }
                         MenuSeparator {}
+                        MenuItem {
+                            text: "Cut (B1+B2)"
+                            enabled: promptInput.selectedText.length > 0
+                            onTriggered: promptInput.cut()
+                        }
+                        MenuItem {
+                            text: "Copy"
+                            enabled: promptInput.selectedText.length > 0
+                            onTriggered: promptInput.copy()
+                        }
+                        MenuItem {
+                            text: "Paste (B1+B3)"
+                            enabled: promptInput.canPaste
+                            onTriggered: promptInput.paste()
+                        }
+                        MenuSeparator {}
                         MenuItem {
                             text: "Select All"
                             onTriggered: promptInput.selectAll()
@@ -488,6 +544,19 @@ Item {
                     }
                 }
 
+                // Paste button (mouse-first workflow)
+                ToolButton {
+                    text: "📋"
+                    font.pixelSize: 14
+                    implicitWidth: 36
+                    implicitHeight: 36
+                    Layout.alignment: Qt.AlignBottom
+                    enabled: promptInput.enabled
+                    onClicked: promptInput.paste()
+                    ToolTip.visible: hovered
+                    ToolTip.text: "Paste from clipboard"
+                }
+
                 // Send button (larger touch target)
                 Button {
                     text: "▶"