Mechanical-bloat review of a diff (PR, branch, or working tree): duplicated blocks, re-implemented helpers, dead code, copy-paste epilogues, and provable shrinks. Every finding is evidence-verified and checked against declared design invariants and shape/adversarial test pins before it is reported. Use when the user says "bloat check", "duplication pass", "what can be deleted", "mechanical bloat", or invokes /bloat-check.
