feat(ui): refine AboutDialog layout and add nav pill tooltips

src/pygui/ISC/HomePage.qml

@@ -26,6 +26,8 @@ Rectangle {
         }
     }
 
+
+
     property bool memoryRead: false
     property bool waferDetected: false
     // TODO P2.2: add `property bool waferLicensed: false`; set it in
@@ -213,9 +215,24 @@ Rectangle {
 
                     ListModel {
                         id: pillModel
-                        ListElement { label: "STATUS"; icon: "Tabs/icons/status.svg"; expandW: 86 }
-                        ListElement { label: "DATA";   icon: "Tabs/icons/data.svg";   expandW: 66 }
-                        ListElement { label: "MAP";    icon: "Tabs/icons/map.svg";    expandW: 58 }
+                        ListElement {
+                            label: "STATUS"
+                            icon: "Tabs/icons/status.svg"
+                            expandW: 86
+                            desc: "Monitor real-time device connection, serial communication, and execute wafer actions."
+                        }
+                        ListElement {
+                            label: "DATA"
+                            icon: "Tabs/icons/data.svg"
+                            expandW: 66
+                            desc: "Manage, review, compare (DTW), and split historical sensor data records."
+                        }
+                        ListElement {
+                            label: "MAP"
+                            icon: "Tabs/icons/map.svg"
+                            expandW: 58
+                            desc: "Visualize spatial sensor readings on a 2D thin-plate spline RBF interpolated heatmap."
+                        }
                     }
 
                     RowLayout {
@@ -227,15 +244,6 @@ Rectangle {
                             model: pillModel
                             delegate: Button {
                                 id: pillBtn
-                                // TODO P3.1: lock MAP pill (index 2) when no license:
-                                //   `enabled: index !== 2 || licenseModel.licenses.length > 0`
-                                //   and dim icon/label when disabled. licensesChanged
-                                //   notify already fires on Load License → unlocks live,
-                                //   no restart. Rule is "any valid license" (not
-                                //   per-wafer): Map also replays CSVs with no wafer
-                                //   attached. Also gate the Map Loader (see TODO at the
-                                //   StackLayout below) and the auto-switch at
-                                //   onParsedDataReady. See plan §3.1.
                                 checked: root.selectedTabIndex === index
                                 flat: true
                                 Layout.fillWidth: true
@@ -305,6 +313,11 @@ Rectangle {
                                     }
                                 }
 
+                                AppToolTip {
+                                    visible: pillBtn.hovered
+                                    text: "<b>" + model.label + "</b>: " + model.desc
+                                }
+
                                 onClicked: root.selectedTabIndex = index
                             }
                         }
@@ -598,6 +611,8 @@ Rectangle {
                 UtilityFooter {
                     id: utilFooter
                     Layout.fillWidth: true
+                    settingsPopup: settingsPopup
+                    aboutDialog: aboutDialog
                 }
             }
         }