Removes dead code across 28 files:
- 31 commented-out "DISABLED" import lines (mostly safe_operations, error_handling)
- Commented-out module declarations in lib.rs (deployment, model_loader_integration, tests)
- Commented-out re-exports in lib.rs (training_pipeline, deployment::ModelVersion)
- Commented-out adaptive strategy modules in regime/mod.rs
All are in git history if ever needed. Net -74 lines removed.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>