Implement BackgroundEmoteTrader (src/trading/BackgroundEmoteTrader.ts)

[tldrwtf]

Description

Background and emote trading logic with callback pattern compatibility.

Tasks

• [ ] Implement Sell_Bgs_And_Emotes function
• [ ] Implement Buy_Bgs_And_Emotes function
• [ ] Keep callback pattern for steam-tradeoffer-manager compatibility
• [ ] Port logic from index.js:1452-1629

Original Code Reference

• index.js:1452-1534 - Sell_Bgs_And_Emotes
• index.js:1534-1629 - Buy_Bgs_And_Emotes

Notes

Keep callback pattern for steam-tradeoffer-manager compatibility rather than converting to Promises.

Files to Modify

• src/trading/BackgroundEmoteTrader.ts

Dependencies

• src/trading/TradeValidator.ts (Issue #35)
• src/trading/KeyTrader.ts (Issue #36)
• src/core/InventoryManager.ts (Issue #22)

Priority

P0 - Critical path

Size

XL (16+ hours)

Phase

Phase 5 - Trading Logic

Parent Issue

#11