Adaptive rotation trainer

# Adaptive Rotation Trainer - 0.2.88

## Hotfix Cleanup: Data Cleanup and Reference Deduplication

Adaptive Rotation Trainer 0.2.88 is a hotfix cleanup release focused on reducing unnecessary internal data and improving maintainability without removing functionality.

This update cleans up duplicated spell reference data that was previously added during the class/spec spell library expansion work. The goal is to keep ART lighter, cleaner, and easier to maintain while preserving the spell filtering, timing metadata, Builder, recommendation, and export systems.

## Changed

### Removed Duplicate Reference Data

ART previously contained both compact class/spec spell reference data and full-info spell metadata with overlapping spell coverage.

The duplicate compact reference table has been removed because the full-info metadata already contains the spell coverage ART needs.

Removed:

ReferenceData/ClassSpellReferenceData.lua