0.4.0

Local web GUI.

• derail web --profile depression: a localhost-only chat page driving
  the same layer chain as derail chat — dark-themed chat bubbles, an
  "induction dose" side panel streaming layer events per turn, and a
  save button writing transcripts for derail score
• Binds to 127.0.0.1 by default (single user), zero new dependencies
  (stdlib http.server, no CDN)
• The memory-contamination warning shows both on the terminal and in the
  page header

Emulation, not diagnosis.