ql-deslop

Post-review AI-slop cleanup pass. After quality review approves a story/feature, scans only the changed files for: duplicate code, dead code, needless abstraction, boundary violations, missing tests. Proposes deletions with regression-test gate — rolls back on regression. Mandatory unless explicitly skipped via --no-deslop. Borrowed from OMC Ralph 7.5 + 7.6.