GitHub Project import preview

Imported preview of selected GitHub Project columns from superkaiba/explore-persona-space / project #1.

This import uses native Sagan entities:

• To do -> proposed experiments
• In flight -> running experiments
• Awaiting promotion -> experiments with pending clean-result promotion requests
• Useful -> approved clean results linked to completed experiments
• Not useful -> archived clean results linked to failed experiments

Imported counts

• To do: 27
• In flight: 4
• Awaiting promotion: 24
• Useful: 9
• Not useful: 2

Total imported issues: 66