Standardize tag lists with 1:1 EN/IT correspondence

Standardize tag lists with 1:1 EN/IT correspondence

- Generate corrected unified master list (tags.txt) with EN|IT format
- Create tags-en.txt and tags-it.txt with matching 118 tags each
- Fix typos: independence/indipendenza, ImageMagick, etc.
- Apply proper casing: person names (Caesar, Mario, Hokusai), brands (WordPress, GoPro, Slackware), projects (Flask, Kdenlive)
- Merge duplicates: festa/feste → feste, game/gioco
- Translate missing: inspiring→ispiratore, candidate, council, celebration
- Standardize: Mt. Fuji (EN) / Monte Fuji (IT), Maximus Decimus Meridius (EN) / massimo decimo meridio (IT)
- Updated unique_tags.txt grep command for quote handling