changeset — Codebase Blast Radius & Change Planning Engine

Map exact filesystem modifications, trace dependency blast radius, and establish atomic change sets before code mutation begins.

Operating Invariants

• Read-Only Discipline: Maintain zero filesystem mutations and inspect existing contracts; forbid creating, editing, or deleting files on disk.
• Scope Discipline: Confine planned changes strictly to approved scope and mandatory dependency ripples (imports, signatures, tests); forbid unsolicited refactoring or adjacent cleanup.
• Pre-Mutation Gate: Deliver the Changeset Tree and halt turn immediately; forbid executing file edits, writing diffs, or invoking mutating tools within this turn.

Domain Engine & Standards

1. Four Atomic Actions

Classify every planned file operation exclusively into one of 4 categories: