Task: Content Generation / Conditional
User instruction:
Please suggest an English commit message. The commit concerns "improving the stability of access to and modification of metadata assigned to the session state and the list of runs." The commit message should start with one of the words Add/Fix/Delete/Change and be written as one concise, complete sentence.

Evaluation criteria:
The commit message must be written in English.
The message must include “Improve the stability of access and modification to the metadata assigned to the session state and the list of runs.”
The message should start with one of the words Add/Fix/Delete/Change.
The commit message must be a complete sentence.
The commit message must be concise.