v0.2.0

Added

• One-shot install.sh (binary or Docker) with auth/port options, systemd &
  OpenRC service setup, and a copy-friendly summary that shows the public IP.
• Remote TUI attach: connect to a running server over a local Unix socket and
  render its live dashboard (next-socks5 attach), configured via [admin].
• Richer TUI dashboard — a merged up/down throughput trend chart, success rate,
  an error histogram, sortable/scrollable connections and log panels, and a
  top-error summary line.
• --mock flag to drive the dashboard with synthetic data for previews/testing.
• Multi-user password auth (multiple [[auth.users]] entries on one port).

Fixed

• TUI: read key input on a dedicated thread so keystrokes are not dropped.
• Load the systemd config via LoadCredential so the DynamicUser can read it,
  and restart the service on reinstall so a new config actually applies.
• Make install.sh POSIX-sh compatible (no bash required).