chain=equalize_splits after close_surface has no effect

[APshenkin]

Issue Description

When using chained keybinds to close a split and then equalize the remaining splits, the equalize_splits action doesn't take effect.

Expected Behavior

After closing a split with the chained keybind, the remaining splits should be equalized to have equal sizes, as if equalize_splits was triggered separately after the close.

Actual Behavior

The split closes, but the remaining splits keep their previous sizes — equalize_splits appears to have no effect. It seems like the chained action fires before the surface is fully removed and the layout recalculates, so equalize_splits operates on stale state.
For comparison, new_split:down + chain=equalize_splits works correctly.

Reproduction Steps

1. Open Ghostty
2. Edit configuration file and add

keybind = cmd+w=close_surface
keybind = chain=equalize_splits

3. Create several splits using cmd+shift+d
4. close one of it using cmd+w

Ghostty Logs

No response

Ghostty Version

Ghostty 1.3.0-main+613259756

Version
  - version: 1.3.0-main+613259756
  - channel: tip
Build Config
  - Zig version   : 0.15.2
  - build mode    : .ReleaseFast
  - app runtime   : .none
  - font engine   : .coretext
  - renderer      : renderer.generic.Renderer(renderer.Metal)
  - libxev        : kqueue

OS Version Information

MacOS 26.3

(Linux only) Display Server

None

(Linux only) Desktop Environment/Window Manager

No response

Minimal Ghostty Configuration

keybind = cmd+w=close_surface
keybind = chain=equalize_splits

Additional Relevant Configuration

No response

I acknowledge that:

• I have reviewed the FAQ and confirm that my issue is NOT among them.
• I have searched the Ghostty repository (both open and closed Discussions and Issues) and confirm this is not a duplicate of an existing issue or discussion.
• I have checked the "Preview" tab on all text fields to ensure that everything looks right, and have wrapped all configuration and code in code blocks with a group of three backticks (```) on separate lines.

[jcollie]

Chained keybinds currently only work on a single surface. Trying to close a surface and then sending equalize_splits would be trying to send to two different surfaces.

[pigxiang]

how to auto-balance split pane sizes after closing one with 1 shortcut key?