feat: One Piece themed visual effects — Three.js particle ocean + user toggle#27

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Copilot wants to merge 3 commits intomainfrom

copilot/add-one-piece-backgrounds-visual-effects

Commits on Mar 26, 2026

Initial plan
Copilot
committed
feat: Add One Piece themed visual effects with Three.js particle ocean

Copilot
and
Yunaido
committed
feat: Update visual effects and styles for One Piece theme
Christopher-Jannik Mauthe
committed