style: apply dart format and trim trailing blank lines

Output of the pre-push `dart format` / formatting hooks, which collapse a few
single-argument calls onto one line and drop blank lines left behind when tests
moved to `idle_reaper.test.ts`. No behaviour or logic change.

Author: leduckhc

app/lib/app/router.dart

@@ -56,10 +56,7 @@ final routerProvider = Provider<GoRouter>((ref) {
                 path: 'settings',
                 builder: (_, _) => const SettingsScreen(),
               ),
-              GoRoute(
-                path: 'closed',
-                builder: (_, _) => const ClosedScreen(),
-              ),
+              GoRoute(path: 'closed', builder: (_, _) => const ClosedScreen()),
               GoRoute(
                 path: 'ports',
                 builder: (_, s) =>

app/lib/desktop/chat/closed_sidebar_view.dart

@@ -28,8 +28,7 @@ class ClosedSidebarView extends ConsumerStatefulWidget {
   const ClosedSidebarView({super.key});
 
   @override
-  ConsumerState<ClosedSidebarView> createState() =>
-      _ClosedSidebarViewState();
+  ConsumerState<ClosedSidebarView> createState() => _ClosedSidebarViewState();
 }
 
 class _ClosedSidebarViewState extends ConsumerState<ClosedSidebarView> {

app/lib/desktop/chat/desktop_sidebar.dart

@@ -1229,8 +1229,8 @@ class _Footer extends ConsumerWidget {
             color: showClosed ? theme.colorScheme.primary : null,
             visualDensity: VisualDensity.compact,
             constraints: const BoxConstraints(minWidth: 32, minHeight: 32),
-            onPressed: () => ref.read(sidebarClosedProvider.notifier).state =
-                !showClosed,
+            onPressed: () =>
+                ref.read(sidebarClosedProvider.notifier).state = !showClosed,
           ),
           if (onOpenSettings != null)
             IconButton(

app/lib/desktop/chat/panes/pane_header.dart

@@ -204,9 +204,7 @@ class SessionActionsMenu extends ConsumerWidget {
       workspace.unbindSession(sessionId);
     } catch (e) {
       if (messenger.mounted) {
-        messenger.showSnackBar(
-          SnackBar(content: Text('Could not close: $e')),
-        );
+        messenger.showSnackBar(SnackBar(content: Text('Could not close: $e')));
       }
     }
   }

app/lib/ui/home/session_tile.dart

@@ -175,9 +175,7 @@ class SessionTile extends ConsumerWidget {
     final confirmed = await _confirmQuit(context);
     if (!confirmed) return false;
     try {
-      await ref
-          .read(storeControllerProvider.notifier)
-          .closeSession(session.id);
+      await ref.read(storeControllerProvider.notifier).closeSession(session.id);
       return true;
     } catch (e) {
       messenger.showSnackBar(SnackBar(content: Text('Could not quit: $e')));

app/test/desktop/chat/closed_sidebar_view_test.dart

@@ -96,9 +96,7 @@ Future<_ClosedConn> _pumpClosed(
     overrides: [
       connectionControllerProvider.overrideWith((_) => conn),
       reposProvider.overrideWithValue(ReposState([_repo()])),
-      sidebarClosedProvider.overrideWith(
-        (_) => true,
-      ), // start in closed view
+      sidebarClosedProvider.overrideWith((_) => true), // start in closed view
     ],
   );
   addTearDown(container.dispose);

app/test/desktop/chat/pr_bar_test.dart

@@ -618,9 +618,7 @@ void main() {
       expect(find.textContaining('Delete the local branch'), findsNothing);
     });
 
-    testWidgets('says sessions are closed, after the removal', (
-      tester,
-    ) async {
+    testWidgets('says sessions are closed, after the removal', (tester) async {
       // The server removes the worktree first and *closes* live sessions
       // (SPEC-29) rather than stopping them; the dialog claimed the reverse order
       // and the wrong verb.

app/test/desktop/chat/selected_session_test.dart

@@ -136,9 +136,7 @@ void main() {
       tree: WorkspaceController.seedWorkspace(),
     );
 
-    testWidgets('on a board the tab ✕ unpins and never closes', (
-      tester,
-    ) async {
+    testWidgets('on a board the tab ✕ unpins and never closes', (tester) async {
       final (conn, groups) = await runClose(tester, board(), (ref) {
         final state = ref.read(workspaceControllerProvider);
         final tab = activeTab(state)!;
@@ -153,17 +151,18 @@ void main() {
       );
     });
 
-    testWidgets('in a worktree group the tab ✕ closes the session (unchanged)', (
-      tester,
-    ) async {
-      final (conn, _) = await runClose(tester, worktree(), (ref) {
-        final state = ref.read(workspaceControllerProvider);
-        final tab = activeTab(state)!;
-        closeTabAndSession(ref, state.activeSplitId, tab.id, tab.sessionId);
-      });
+    testWidgets(
+      'in a worktree group the tab ✕ closes the session (unchanged)',
+      (tester) async {
+        final (conn, _) = await runClose(tester, worktree(), (ref) {
+          final state = ref.read(workspaceControllerProvider);
+          final tab = activeTab(state)!;
+          closeTabAndSession(ref, state.activeSplitId, tab.id, tab.sessionId);
+        });
 
-      expect(conn.sent.where((m) => m['kind'] == 'session.close').length, 1);
-    });
+        expect(conn.sent.where((m) => m['kind'] == 'session.close').length, 1);
+      },
+    );
 
     testWidgets('⌘⇧W agrees with the ✕ on a board (one shared path)', (
       tester,

server/src/adapters/acp.test.ts

@@ -1574,4 +1574,3 @@ test("start() leaves the agent's model alone when it already matches, or is unkn
   assert.ok(statuses.includes("idle"), "the session still started");
   await a2.kill();
 });
-

server/src/manager.test.ts

@@ -2510,5 +2510,3 @@ test("closeSession reaps even when the agent's close() never settles", async ()
     store.close();
   }
 });
-
-