v0.9.22

Summary:

• Fixed:
  • 6ff217da prevent redundant election when single voter is already electing.

Detail:

Fixed:

• Fixed: 6ff217da prevent redundant election when single voter is already electing; by Zhang Yanpo; 2026-04-08

  When a single-voter node calls elect() during initialize(), it
  becomes a Candidate with an uncommitted vote. Before the vote flush
  completes, an election tick can fire and trigger a second elect(),
  bumping the term unnecessarily (e.g., T1 → T2). This caused flaky
  test failures in single-term-leader mode where new_cluster()
  expected vote == <T1-N0:Q> but observed <T2-N0:Q>.

  The fix checks candidate_ref().is_some() to detect an in-progress
  election. This is precise because the Candidate struct only exists
  between an elect() call and becoming Leader — it is never present
  after a node restart, unlike vote-based checks (is_leading()) which
  would incorrectly match persisted votes from a previous run.