v2.22.5

A patch release: nothing the model reads changes.

• The start-up prime no longer forces a rebuild of a cache the first turn
  can extend. A server that already served a session holds this prompt from
  that session's end-of-turn prewarm, and the forced prime rebuilt it anyway.
  It now asks without forcing first, and forces only an empty cache or one
  longer than the prompt plus the 600-token Rewind discard limit. A new
  session's first turn on an already-used server, question typed 5 s after
  start: 13.7–14.7 s on 2.22.3, 6.0–6.3 s on 2.22.4, 1.9–2.3 s now (4
  runs each). On a freshly started server the first two turns are unchanged
  at 11.7–12.3 s in total. After a Hex upgrade that changes the prompt, the
  first turn of the first session pays one rebuild.