missionforge init <MISSION_ID>
# or
missionforge workspace init <MISSION_ID>

.missionforge/
└── missions/
    └── <MISSION_ID>/
        ├── mission.yaml      # Mission definition (fill this in)
        ├── plan.yaml         # Execution plan
        ├── report.md         # Generated report
        └── sub-missions/     # Sub-mission directory

# Create a new mission workspace
missionforge init MF-001

# Overwrite an existing workspace
missionforge init MF-001 --force

# Using the workspace subcommand
missionforge workspace init PROJ-123

missionforge mission MF-001 --validate