user clean-up for nmfs-openscapes hub

@ateucher Follow-up notes per nmfs-openscapes hub

• andy will create table of users in hub teams: user, teams, last hub access, size of home dir
• eli to contact Sunny re CoastWatch team
• eli to contact OHW users and let them know access is going away

once we have a spreadsheet, eli and andy will review and flag users for deletion. then we will

• flag users for removal @eeholmes
• id any 2024-champions-cohort users. move them to 2026-JupyterHub @eeholmes
• archive home directories of flagged users @ateucher
• remove users from hub @ateucher
• remove users from gh teams @eeholmes
• move remaining users to correct teams @eeholmes

then

• eli will create updated team names (see notes below) @eeholmes
• eli will put in a pr to 2i2c to update the prod.yaml for nmfs-openscapes hub
  * remove 2024-champions-cohort from the prod.yaml
  * remove 2024-coastwatch (which was for OHW25)
  * change team names to new names

team naming notes

• fish-pace hackweek will be in fish-pace org and only for hackweek use
• users that need longer access for projects will request via form
• longterm-access-2i2c is for users who need longer term more persistent access
• shortterm-access-2i2c is for users who are ephemeral. accounts deleted after non-use or some period of time. anyhow, no assumption of permanence for them

code to get username, last mod file date and dir size

echo "date,time,size_gb,username" > users_home_audit.csv

find /home/jovyan/allusers -mindepth 1 -maxdepth 1 -type d \
  -printf '%T@,%TY-%Tm-%Td,%TH:%TM,%p\n' \
  | sort -nr \
  | while IFS=',' read -r epoch date time dir; do
      size_gb=$(du -s "$dir" 2>/dev/null | awk '{printf "%.2f", $1/1024/1024}')
      user=$(basename "$dir")
      printf "%s,%s,%s,%s\n" "$date" "$time" "$size_gb" "$user"
    done >> users_home_audit.csv

Review the completed checklist and the nmfs-openscapes hub's prod.yaml changes described in the issue. Run the provided home-directory audit command if verification is needed, then confirm the user, hub-team, archive, and team-naming work is complete; the issue does not identify repository file paths or tests.