Use this when the user asks which projects they have, which one they are
saving to, or wants to move their saves elsewhere. It does not perform the
switch: the user's click on a project's `switch_link` is the switch.

Read-only.

Returns:
    `{projects: [{project, team, save_domain, save_group, is_main,
    is_this_connection, read_only?, switch_url, switch_link}], main_project,
    main_paused?, display, note}`. Each `switch_link` is a clickable link;
    the user's click on it performs the switch. `is_main` marks the
    account-wide target; `is_this_connection` marks the project this
    connection is folder-bound to. Entries with `read_only` are public
    targets the account can read without owning a preset, such as a shared
    demo. `main_paused`, when present, means the user switched Main off in
    the console. A wanted memory is located by its `team`, not by an exact
    project name.