Function execute_compaction_with_retry 

pub fn execute_compaction_with_retry<F>(
    session: &mut SessionManager,
    keep_recent_groups: usize,
    max_retries: u32,
    generate_summary: F,
) -> Result<Option<CompactionResult>>
where
    F: FnMut(&str) -> Option<String>,

Execute manual compaction with overflow retry.

If the generate_summary closure returns None (indicating the summarizer could not handle the input), this function increases keep_recent_groups by 2 each retry, shrinking the summarization target, up to max_retries times.