tiviLux V18.1 — Sports Event Dedupe Fix

- Fixes duplicate NFL/MLB game cards when multiple Internet sources describe the same matchup differently.
- Dedupes by league + away team + home team + kickoff within 30 minutes.
- Fuzzy team aliases treat names like "Toronto Blue Jays" and "Blue Jays" as the same club.
- Merges network/TV metadata into the retained verified event instead of creating another card.
- Adds both backend and browser-side dedupe protection.
- Preserves V18 PPV natural numeric sorting (1 through 50), XUI matching, targeted EPG fallback, mobile layout, player and Live TV behavior.