diff --git a/.pql/pql-plan.json b/.pql/pql-plan.json
index c114e76e..b1d18ad8 100644
--- a/.pql/pql-plan.json
+++ b/.pql/pql-plan.json
@@ -1,5 +1,5 @@
 {
-  "exported_at": "2026-05-01T11:03:51Z",
+  "exported_at": "2026-05-01T11:11:26Z",
   "decisions": [
     {
       "id": "D-1",
diff --git a/lib/builtin/claude/src/claude_pane.dart b/lib/builtin/claude/src/claude_pane.dart
index 723f1a03..2f34d0b7 100644
--- a/lib/builtin/claude/src/claude_pane.dart
+++ b/lib/builtin/claude/src/claude_pane.dart
@@ -242,8 +242,10 @@ class _ClaudePaneState extends State<ClaudePane> {
     _resizeTimer = Timer(const Duration(milliseconds: 150), () {
       final id = _paneId;
       if (id == null) return;
-      print('[resize] cols=$cols rows=$rows');
       _ipc()?.request('pane.resize', args: {'id': id, 'cols': cols, 'rows': rows});
+      // tmux doesn't re-read PTY winsize on SIGWINCH — it needs an
+      // explicit refresh-client to update its internal window size.
+      Process.run('tmux', ['refresh-client', '-C', '$cols,$rows']);
     });
   }