fix(studio): bump editor pin to 0.19.0 (run-block + copyable errors)

Pulls in editor 0.19.0 which closes three operator-reported
gaps: persistent diagnostic strip across all three tabs,
analyzer-error block on Run, and copyable run failures.
Studio bumped to 0.65.1.

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

lib/main.dart

@@ -27,7 +27,7 @@ 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 = '0.65.0';
+const String kStudioVersion = '0.65.1';
 
 Future<void> main() async {
   WidgetsFlutterBinding.ensureInitialized();

pubspec.lock

@@ -126,7 +126,7 @@ packages:
       path: "../fai_studio_flow_editor"
       relative: true
     source: path
-    version: "0.17.0"
+    version: "0.18.0"
   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: 0.65.0
+version: 0.65.1
 
 environment:
   sdk: ^3.11.0-200.1.beta