`dws --help` now closes with a Feedback section that links the
user-experience survey form, tagged with source=dws-cli so submissions
arriving through the CLI can be told apart from other channels.
The entry is deliberately root-only: this CLI is driven mostly by AI
agents, and repeating a survey link in every subcommand help would be
pure context noise. A guard test pins that boundary.
The URL is printed on its own unwrapped line — it is longer than the
help rule width, and breaking it would stop terminals from recognizing
it as a clickable hyperlink.