BMAD Epic Pipeline (Worktree Edition)

Deliver all incomplete user stories in Epic {ARGUMENT} using configurable pipeline, each story developed in isolated worktree and merged only after tests pass.

Pre-step: Determine Epic Number

If no epic number is provided ({ARGUMENT} is empty):

1. Read _bmad-output/implementation-artifacts/sprint-status.yaml (or docs/sprint/sprint-status.yaml)
2. Find all stories with status not done (format: X-Y-story-name)
3. Extract Epic numbers X from these stories
4. Select the smallest Epic number as {ARGUMENT}
5. Output:

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
📌 Auto-selected Epic: {ARGUMENT} (has incomplete stories)
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━