0.3.0

Interactive chat.

• derail chat --profile depression: a REPL where every user turn flows
  through the full layer chain — memory decays, pinned premises persist,
  valence tilts, live
• Sessions save as transcripts (/save [path], --save-transcripts)
  that feed straight into derail score; --verbose prints the
  induction dose per turn
• Freeform chat makes the memory-contamination warning more important
  than ever — chat mode prints it prominently and defaults to the offline
  PseudoBot
• Session.start()/Session.send(): incremental turns for embedders;
  run() is now a thin loop over send() (regression-tested for
  identical determinism)

Emulation, not diagnosis.