chore: bump version to 2026.4.4

Author: royerloic

src/litemind/__init__.py

@@ -9,7 +9,7 @@
 availability checks for API backends and vector databases.
 """
 
-__version__ = "2026.3.10"
+__version__ = "2026.4.4"
 
 from arbol import aprint, asection