Plan

Break a spec into phased vertical slices (tracer bullets).

Interactive prompts: present options as a numbered list and wait for the user's choice.

Output: .specs/plans/<slug>.md.

Input

The argument (if provided) is: $ARGUMENTS

Use argument as <slug>. If empty, list specs as numbered options and wait for the user's choice.

Workflow

1. Read the spec

Read .specs/specs/<slug>.md. If missing, list specs as numbered options and wait for the user's choice.