fixing-a-reported-issue

Use when given a bare issue reporting a defect (or a CI failure with no scoped fix yet), before writing any fix code. Reproduces the issue live, escalates explicitly if reproduction fails, writes a failing test before touching the fix, applies the minimal fix, verifies the test flips with no regressions, then discloses an ACM waiver on the target issue before any PR follows. Distinct from drafting-a-pr-to-merge (fixes CI on an already-open PR with a fix already in flight) and planning-a-branch-from-an-issue (plans a branch/PR from an issue without reproducing or fixing).