Release v0.12

[Rarmash]

This PR delivers the first full pattern-focused simulator update, along with a redesigned home screen and polish for Major browsing screens.

Highlights:

• Initial skin pattern seed and finish variant support across case drops, trade-ups, X-Ray reveals, and terminal offers
• Pattern-aware skin browsing with grouped finish variants, glossary filters, and detailed finish behavior screens
• Unified handling of phased finish families such as Doppler and Gamma Doppler across rolls, trade-ups, and collection views
• Clearer pattern presentation in item reveal cards, with less duplication between phase, seed, and pattern detail fields
• Redesigned home screen with grouped entry points instead of a long flat action list
• Visual polish pass across Major tournament, team, and player pages with a shared summary layout and cleaner roster/team flows