Let a script rename the project and reshape a folio's frame

setProjectTitle(title)
  folioBorder(folio, prop)  setFolioBorder(folio, prop, value)

The frame is the grid of columns and rows around a folio: columns,
column-width, display-columns, rows, row-height, display-rows -- the six
fields the folio properties panel offers -- through ChangeBorderCommand,
so it undoes like a hand edit. The title block's header sizes, which the
panel does not offer, are left alone. Changing the project title is not
undoable, because the application sets it directly too.

Counts are 1 to 99 and sizes 1 to 1000. The panel's upper limits are the
same; its lower limit is 0, which is not offered: a grid with no columns
has no use here and 0 was not tested, so it is refused rather than
assumed safe. The extremes that are offered (99 x 99 cells, widths from 1
to 1000) were exported to PNG without a hang or crash. Fractions, out of
range values, an unknown property and a bad folio are refused with a
reason.

Verified: ten columns of 40 and four rows of 100, undo of the last change,
and the folio and the renamed project read back after a reload. My first
reload check read the wrong folio and briefly looked like the border was
not persisted; the file itself had the right values.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

sources/scripting/qetscriptapi.h

@@ -203,6 +203,13 @@ class DynamicElementTextItem;
 	  cannot be told apart. A conductor is copied
 	  only if both its ends are among the copied elements. The previous
 	  selection is put back afterwards, since copying works by selecting.
+	- @b Project title and folio frame: setProjectTitle(), and the grid that
+	  frames each folio -- columns and rows, their size, and whether the
+	  headers show (columns, column-width, display-columns, rows, row-height,
+	  display-rows) -- through ChangeBorderCommand. These are the six fields
+	  the folio properties panel offers; the title block's header sizes,
+	  which it does not, are left alone. Changing the project title is not
+	  undoable: the application sets it directly too.
 	- @b Images: place a picture from a file. The pixels are copied into
 	  the project, which stores them inline in the .qet -- the saved file
 	  does not refer to the original path, so it opens on another machine,
@@ -398,6 +405,11 @@ class QetScriptApi : public QObject
 		Q_INVOKABLE QStringList duplicateElements(int fromFolioIndex, const QStringList &elementUuids,
 												  int toFolioIndex, double x, double y);
 
+		// -- the project title, and each folio's frame (grid of columns and rows) --
+		Q_INVOKABLE bool setProjectTitle(const QString &title);
+		Q_INVOKABLE QString folioBorder(int folioIndex, const QString &property) const;
+		Q_INVOKABLE bool setFolioBorder(int folioIndex, const QString &property, const QString &value);
+
 		// -- folios --
 		Q_INVOKABLE int addFolio();
 		Q_INVOKABLE bool setFolioTitle(int folioIndex, const QString &title);