done

<objective> Mark tasks as done. Done tasks linearize into ancestry - other WIP parents rebase onto them, creating linear history.

Part of mega-merge workflow - see /jjtask for full context. </objective>

<context> Current WIP tasks: !`jjtask find wip 2>/dev/null || echo "no wip tasks"` </context> <process> Run: `jjtask done $ARGUMENTS`

• No args: marks current task (@) as done
• With tasks: marks those tasks as done
• Multiple: jjtask done a b c

Done tasks become ancestors of remaining WIP tasks. </process>