add a few missing version tags

doc/src/fix_set.rst

@@ -27,6 +27,8 @@ Examples
 Description
 """""""""""
 
+.. versionadded:: 12Jun2025
+
 Reset one or more properties of one or more atoms once every *Nfreq*
 steps during a simulation.
 

doc/src/molecule.rst

@@ -683,6 +683,8 @@ the file format.
 Format of a JSON molecule file
 """"""""""""""""""""""""""""""
 
+.. versionadded:: 12Jun2025
+
 The format of a JSON format individual molecule file must follow the
 `JSON format <https://www.json.org/>`_, which evolved from the
 JavaScript programming language as a programming-language-neutral data

src/library.cpp

@@ -405,7 +405,7 @@ void lammps_kokkos_finalize()
  *
 \verbatim embed:rst
 
-.. versionadded:: TBD
+.. versionadded:: 12Jun2025
 
 This function clears the list of all loaded plugins and closes the
 corresponding DSO handles and releases the imported executable code.