/de-sloppify — 7-Step Cleanup Pipeline

What

Runs an ordered, verified cleanup pipeline over a .NET codebase. Order matters: formatting first (it touches every file — get the churn out of the way before anything else), dead code late (earlier steps reveal it). Random cleanup misses things and creates merge conflicts; the pipeline doesn't.

Three rules make it safe:

1. Verify after each step — dotnet build + dotnet test between steps. A cleanup that breaks something is worse than the mess it was fixing.
2. Commit per step — each step is its own commit, so a bad Step 4 reverts without losing Steps 1-3.
3. Safe removals only — before deleting "dead" code, check for reflection, DI-convention, and serialization usage that Roslyn cannot see.