feat(Notepad): Complete refactor - New popout mode & settings

- Add a full popout Notepad experience w/new layout settings
- New ability to choose the left or right side of the screen
- Add more safegaurds to preserve user data throughout
- New banner to show file reload/conflict handling
- New extensionless file support
- Polish settings with gap controls, compact buttons, and shortcuts help

quickshell/Modules/DankBar/Widgets/NotepadButton.qml

@@ -32,9 +32,20 @@ BasePill {
     }
 
     readonly property var notepadInstance: resolveNotepadInstance()
-    readonly property bool isActive: notepadInstance?.isVisible ?? false
+    readonly property bool popoutDefault: SettingsData.notepadDefaultMode === "popout"
+    readonly property bool isActive: popoutDefault ? (PopoutService.notepadPopout?.visible ?? false) : (notepadInstance?.isVisible ?? false)
     property bool isAutoHideBar: false
 
+    function showActiveSurface() {
+        if (root.popoutDefault) {
+            PopoutService.openNotepadPopout();
+            return;
+        }
+        const instance = prepareNotepadInstance(root.notepadInstance);
+        if (instance && typeof instance.show === "function")
+            instance.show();
+    }
+
     function prepareNotepadInstance(instance) {
         if (instance)
             instance.triggerUsesOverlayLayer = root.barUsesOverlayLayer;
@@ -75,20 +86,14 @@ BasePill {
     function openTabByIndex(tabIndex) {
         if (tabIndex < 0)
             return;
-        const instance = prepareNotepadInstance(root.notepadInstance);
-        if (instance && typeof instance.show === "function") {
-            instance.show();
-        }
+        showActiveSurface();
         Qt.callLater(() => {
             NotepadStorageService.switchToTab(tabIndex);
         });
     }
 
     function openNewNote() {
-        const instance = prepareNotepadInstance(root.notepadInstance);
-        if (instance && typeof instance.show === "function") {
-            instance.show();
-        }
+        showActiveSurface();
         Qt.callLater(() => {
             NotepadStorageService.createNewTab();
         });
@@ -147,6 +152,10 @@ BasePill {
                 openContextMenu();
                 return;
             }
+            if (root.popoutDefault) {
+                PopoutService.toggleNotepadPopout();
+                return;
+            }
             const inst = prepareNotepadInstance(root.notepadInstance);
             if (inst) {
                 inst.toggle();