chore(studio): bump editor lock to 0.2.2 (save snackbar + drop highlight)

Picks up:
 - Brief green-check snackbar after every successful save
   (Cmd+S keystroke now has visible confirmation).
 - During a connection drag, every input port lights up
   and the closest one within snap distance gets a halo
   glow so the operator sees which port the drop will
   snap to.

Version 0.52.1 -> 0.52.2.

Signed-off-by: flemming-it <stefan.a.flemming@googlemail.com>

lib/main.dart

@@ -26,7 +26,7 @@ import 'widgets/widgets.dart';
 /// Studio's own build version. Bump on every UI commit so the
 /// running app self-identifies — visible in the sidebar header
 /// and quick-glance proof that you're seeing the current build.
-const String kStudioVersion = '0.52.1';
+const String kStudioVersion = '0.52.2';
 
 Future<void> main() async {
   WidgetsFlutterBinding.ensureInitialized();

pubspec.lock

@@ -125,10 +125,10 @@ packages:
     description:
       path: "."
       ref: main
-      resolved-ref: cae5c94c4dd9fd7242985eb1a8cff07c7d5c4a48
+      resolved-ref: f8138f3516098dc03e65fdfa52916885e7e7aeff
       url: "https://git.flemming.ai/fai/studio-flow-editor"
     source: git
-    version: "0.2.1"
+    version: "0.2.2"
   fake_async:
     dependency: transitive
     description:

pubspec.yaml

@@ -1,7 +1,7 @@
 name: fai_studio
 description: "F∆I Studio — desktop GUI for the F∆I hub"
 publish_to: 'none'
-version: 0.52.1
+version: 0.52.2
 
 environment:
   sdk: ^3.11.0-200.1.beta