fix(FN-1843): add onClose prop to SkillsView and anchor node selector dropdown

- Add missing onClose prop to SkillsView component in App.tsx for proper close navigation
- Anchor node selector dropdown to left edge to prevent off-screen rendering

packages/dashboard/app/App.tsx

@@ -318,7 +318,11 @@ function AppInner() {
     if (taskView === "skills") {
       return (
         <PageErrorBoundary>
-          <SkillsView addToast={addToast} projectId={currentProject?.id} onClose={() => handleChangeTaskView("board")} />
+          <SkillsView
+            addToast={addToast}
+            projectId={currentProject?.id}
+            onClose={() => handleChangeTaskView("board")}
+          />
         </PageErrorBoundary>
       );
     }

packages/dashboard/app/styles.css

@@ -689,7 +689,7 @@ body {
 .node-selector-dropdown {
   position: absolute;
   top: calc(100% + var(--space-xs));
-  right: 0;
+  left: 0;
   min-width: 180px;
   background: var(--surface);
   border: 1px solid var(--border);