feat: implement DTW comparison, add data segmentation and persistence, and update QML UI for file imports and graphing.

src/pygui/ISC/Tabs/StatusTab.qml

@@ -5,7 +5,8 @@ import QtQuick.Dialogs
 import ISC
 
 // ===== Status Tab =====
-// Blank on startup. Fills in after Detect Wafer fires from the left rail.
+// Shows connection status, wafer info, and activity log.
+// Initially visible — displays connection status and activity log from start.
 ColumnLayout {
     id: root
     anchors.fill: parent
@@ -313,7 +314,7 @@ ColumnLayout {
                      TextArea {
                          id: activityLog
                          width: parent.width
-                         text: ""
+                         text: qsTr("Welcome — use the side rail to detect a wafer, or import data to review.")
                          readOnly: true
                          font.family: "monospace"
                          font.pixelSize: 12