strop v0.32.3

Captures of terminal sessions cost a tenth of the bytes.

Improved

• Terminal frames and per-action checks stopped shipping padding and
  duplicate text: each row's trailing default-styled space padding is
  re-derived from the frame's geometry on decode, and observation checks
  witness document text by SHA-256 digest plus its true byte length
  instead of serializing the whole buffer every action (the startup seed
  still carries full text). The same flooded-terminal session that
  recorded ~20 MB now records ~2.4 MB, still complete and replayable —
  cheaper captures, faster drains on slow runners. Traces written by
  earlier versions still replay.