Fixes#13444
A close while AppKit temporarily cleared/changed a surface's window would
leak the surface in the controller's pslit tree. This retained surface kept
a bunch of resources around, particularly large IOSurfaces.
This seems to only be reproducible under scripted load: rapid terminal
creation/destruction so that destruction happens just while there is a nil
window on a surface view.
Track surface ownership in a weak controller map updated alongside the split
tree, with validated fallbacks for existing attachment state. Resolve
scripted and App Intent operations through that ownership, and route
non-confirming root closes directly through the immediate tab or window close
path so teardown always reaches the renderer.
Fixes 2 bugs
1. After dragging a non-focused surface from window A to window B
**quickly without making B the key window**, the focused surface in
window A is not receiving `keyDown` events.
https://github.com/user-attachments/assets/a8861c0a-9300-470d-bf7e-0f32a9ab2cd1
2. #12343 After dragging a surface from tab A to tab B within the same
window, the dragged surface is not rendering input correctly.
> The reason the thread is stuck is because the surface's occlusion
state is set to invisible after target tab's activate while dragging,
since the dragged surface is still in previous tree before dropping, and
after dropping the occlusion state of this surface is not updated to
visible, which causing the surface is accepting input but not rendering.
https://github.com/user-attachments/assets/d67f5dba-8609-4f67-a956-921982faf796
The reason the thread is stuck is because the surface's occlusion state is set to invisible after target tab's activate while dragging, since the dragged surface is still in previous tree before dropping, and after dropping the occlusion state of this surface is not updated to visible, which causing the surface is accepting input but not rendering.
This fixes a bug: after dragging a non-focused surface from window A to window B **quickly without making B the key window**, the focused surface in window A is not receiving `keyDown` events.
Adds the `selection_for_search` action, with Cmd+E keybind by default.
This action inputs the currently selected text into the search
field without changing focus, matching standard macOS behavior.
