0.6.0

UX pass across all three interfaces.

• Profiles introduce themselves: description and a getting-started tip
  (plant a personal claim, contradict it later, run derail score)
• Web GUI: "about this profile" panel (mechanism notes), visible turns
  counter, input/send locked while a turn is in flight, aria-live log,
  narrow-screen layout
• Chat: /help and /verbose commands
• TUI: scrollable dose panel, live turns counter in the header

Emulation, not diagnosis.