Adds the key to cli-config.yaml.example and the multi-profile per-key list, records the env-over-YAML precedence, and drops the duplicated no_thread_channels clause in the new section.
Adds the key to cli-config.yaml.example and the multi-profile per-key list, records the env-over-YAML precedence, and drops the duplicated no_thread_channels clause in the new section.