Plan and execute epic workflow

Conduct epic end-to-end from brainstorm through execution to review

Managing large multi-repo epics where brainstorm→plan→execution→review is the governance gate

• · epic id
• · spec from brainstorming
• · plan document with Task N sections

• · PF stories (one per Task)
• · rollup PR per repo
• · epic closed status

• · pf epic
• · pf sprint
• · superpowers:brainstorming
• · superpowers:writing-plans
• · superpowers:subagent-driven-development

• · superpowers brainstorm output exists
• · plan markdown generated
• · plan has ### Task N sections

• · plan has no Task sections (no stories created)
• · story completion does not flip epic status
• · rollup review fails for one repo

• · Plan is source of truth (epic YAML is generated)
• · idempotent from-plan (safe to re-run)
• · rollup review per affected repo