v0.7.1

Fixed

• Relocated env block is now wrapped in <system-reminder> tags. The
  volatile # Environment text that pxpipe moves out of the cached system
  prefix used to be appended to the last user message as bare prose — on an
  empty or short user turn it could read as the user's entire message, and
  models would mis-attribute it ("your message consisted of environment
  metadata"). The block now carries an explicit provenance header
  ("Context relocated by pxpipe from the system prompt … not written by the
  user"), fixing attribution. No cache impact: the wrapper rides the volatile
  tail behind all cache breakpoints (~60 chars/request).