Blast Radius Audit

Find concrete ways a change could break behavior outside its visible diff, then establish the smallest set of facts its safety depends on.

Audit only. Do not edit repository files, add permanent tests, apply fixes, commit, publish, or mutate production or external systems unless the user separately authorizes those actions. Read-only inspection and reversible local diagnostics are allowed. Put any throwaway probe outside the working tree and remove it when finished.

Establish the Change

Resolve the exact change under review from the user's named pull request, branch, commit, diff, or working changes. Record the fixed point when one exists. Ask only when choosing the wrong target would materially change the audit.

Inspect:

• the complete diff and commits
• added, changed, and deleted symbols
• the behavior that changes, including semantic effects not obvious from the edited lines
• relevant tests, callers, and repository instructions

Direct callers are the starting point, not the blast-radius result.