Generate /goal Command for Spec Execution

Arguments: $ARGUMENTS

Build a /goal command that will autonomously execute all specs in an ideation project, then copy it to the user's clipboard.

Step 1: Find the Contract

• If a path was provided in $ARGUMENTS, use it
• Otherwise, glob for ./docs/ideation/*/contract.md
• If multiple found, pick the most recently modified

Read contract.md and extract:

1. Project name and directory from the contract path
2. Phases — title, spec path, and dependency ordering from the Execution Plan section
3. Already-completed phases — run git log --oneline --grep="spec-phase" to find commits referencing spec files. Exclude completed phases from the goal.

If no uncompleted phases remain, tell the user and stop.