[Feature] Custom cosmetics — nuke trails, warheads, warship skins, building skins

[iiamlewis]

Overview

Purchasable in-game cosmetics for nuke trails, warhead visuals, warship skins, and building skins. Visible to all players in match. Never pay-to-win — visual only.

Scope

• Nuke trail cosmetics (visible to all during nuke flight)
• Warhead explosion effects
• Warship skin variants
• Building skin variants (cities, ports, etc.)
• Purchasable individually or as packs
• Bundling across item types

Acceptance criteria

• Each cosmetic type has at least 3 variants at launch
• All cosmetics visible to other players in match
• No gameplay advantage from any cosmetic
• Purchasable via in-game shop
• Bundle pricing available

Dependencies

• Depends on: OAuth, Shop UI redesign