Trade Matching Engine

[NengakDakup]

Description:
When a trade event is detected, match it to an eligible merchant based on rates, availability, and KYC status.

Acceptance Criteria:

• Query available merchants with valid KYC and sufficient balance
• Select merchant with best rate (or other matching logic)
• Lock trade to selected merchant and update trade status

Subtasks:

• Query eligible merchants
• Implement matching logic
• Lock trade and update status