Someday: Improve Visibility and Access to "Someday" Tasks

Currently, "Someday" tasks only appear when clicking on "M" within the "Upcoming" section, which isn’t immediately clear to users. It would be much more intuitive if "Someday" were accessible directly from the "Plan" dropdown menu, alongside other options like Today, Tomorrow, This Week, etc. Additionally, the current setup requires users to manually type "Someday" in the "Plan" field to select it, which can be confusing. A more user-friendly approach would be to have "Someday" listed as a selectable option in the dropdown without needing to type it out.