A column can be empty, as acme's can; new panes go where acme's makenewwindow puts them

Newcol makes an empty column; closing a column's last pane leaves it empty with
the keyboard on its tag; Delcol and Joincol alone take a column away; the
session's last pane closing quits. The +New stand-in and replaceStillborn /
stillborn_joiner are gone. Every new pane goes through exec.placeNew, which
follows acme's makenewwindow (active column, empty column whole, blank space,
halving the biggest) or, with Placement pardes, the old rules. ColumnTags is
gone: column tags are always shown. A grip drag shows acme's box cursor.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

1 files changed, 1 insertions, 1 deletions

diff --git a/test/pdf.zig b/test/pdf.zig
index 2699fe01..4cb8f3dd 100644
--- a/test/pdf.zig
+++ b/test/pdf.zig
@@ -343,7 +343,7 @@ test "PdfSections Look follows the exact owning PDF, not an equal path" {
 
     const duplicate_id = p.freeSlot() orelse return error.NoDuplicatePdfSlot;
     const duplicate = try panes.Pdf.openPane(p, duplicate_id, path, 0);
-    pardes.exec.placeDoc(p, 0, duplicate_id, duplicate);
+    pardes.exec.placeNew(p, 0, 0, duplicate_id, .doc);
     layout.compute(p);
     panes.Pdf.openSections(p, duplicate_id);
     const duplicate_output_id = duplicate.search_pane orelse return error.MissingDuplicatePdfSections;