Create Feature Flag Plan

Overview

Generate a feature flag lifecycle plan for progressive delivery. Covers flag naming, rollout stages from internal to beta to GA, kill switch behavior, monitoring requirements at each stage, and a cleanup plan with a deadline and owner for flag removal. Prevents flag debt and ensures safe, observable rollouts.

Workflow

1. Read engineering context -- Scan .chalk/docs/engineering/ for existing feature flag conventions, architecture docs, and monitoring infrastructure. Check .chalk/docs/product/ for the PRD or pitch that describes the feature being flagged.

2. Parse the feature -- Extract from $ARGUMENTS the feature to create a flag plan for. If unspecified, ask the user to name the feature.

3. Determine the next file number -- Read filenames in .chalk/docs/engineering/ to find the highest numbered file. The next number is highest + 1.

4. Define the flag -- Name the flag following conventions found in engineering docs, or default to enable_<feature_slug>. Specify the flag type (boolean, percentage, user-segment) and default value (always off).