Multi-File Refactor With a Behavior Lockfile

Slash Command: /blast-radius Before Any Multi-File Edit

A reusable slash command that maps the true blast radius of a proposed change across files, services, and consumers.

Claude Code: Carve a Safe Seam Into a Tangled Module

Plans a minimal, behavior-preserving seam in a messy module so you can refactor or add features without rewriting it.

Claude Code: Map the Implicit State Machine in a Stateful Module

Forces Claude to extract the hidden state machine from imperative code before you refactor or extend it.

Cursor: Pre-Mortem a Risky Refactor Before You Touch It

Forces Cursor to predict failure modes of a planned refactor before writing any code, so you catch landmines first.