Add Radashi utility library analysis

Commit notes

Comprehensive analysis of whether adopting Radashi would benefit the codebase:

- Analyzed ~200 utility patterns across frontend and backend - Identified high-value opportunities: sleep(), retry(), clamp(), unique() - Estimated 50-100 LOC reduction potential - Provided implementation recommendations and alternatives

Key findings: - Retry logic would benefit most (~50 lines saved) - Sleep/clamp patterns would be cleaner - Most reduce/Object.* patterns already optimal - SQL GROUP BY not applicable to JS utilities

Co-authored-by: armin.naimi <[email redacted]>