feat: add interactive folder selection for CSV saves and stabilize cross-platform dependency locking

src/pygui/ISC/Tabs/StatusTab.qml

@@ -1,6 +1,7 @@
 import QtQuick
 import QtQuick.Layouts
 import QtQuick.Controls
+import QtQuick.Dialogs
 import ISC
 
 // ===== Status Tab =====
@@ -29,6 +30,28 @@ ColumnLayout {
     property string csvPath: ""
     property bool dataParsed: false
 
+    function cleanFolderUrl(url) {
+        return decodeURIComponent(String(url).replace(/^file:\/\//, ""))
+    }
+
+    function currentFamilyCode() {
+        var info = deviceController.lastWaferInfo
+        return info && info.length > 0 ? (info[0] || "") : ""
+    }
+
+    function parseAndSavePendingRead() {
+        deviceController.parseAndSaveData(root.currentFamilyCode(), deviceController.selectedPort || "")
+    }
+
+    FolderDialog {
+        id: saveDirDialog
+        title: "Choose CSV Save Folder"
+        onAccepted: {
+            deviceController.setSaveDataDir(root.cleanFolderUrl(selectedFolder))
+            root.parseAndSavePendingRead()
+        }
+    }
+
     // ===== Empty state — nothing shown until detect fires =====
     Item {
         Layout.fillWidth: true
@@ -345,6 +368,9 @@ ColumnLayout {
             root.dataRows   = 0
             root.dataCols   = 0
             root.csvPath    = ""
+
+            if (result && result.success === true)
+                saveDirDialog.open()
         }
     }