Ladder Execute

Implement a phase spec one step at a time with plan mode, commit discipline, progress tracking, subagent delegation, and mid-session resume.

When to Use

• User says "execute phase," "run phase," "ladder execute," "start phase," or "/ladder-execute"
• User provides a spec file path to implement
• Resuming an interrupted phase execution

When NOT to Use

• .ladder/OVERVIEW.md doesn't exist → "Run /ladder-init first"
• Spec is not in canonical format → "Run /ladder-refine first"
• User wants to create a new spec → use /ladder-create
• User wants to fix a malformed spec → use /ladder-refine

Quick Reference