MllBreachRegistry

Global Durable Object for tracking MLL (Maximum Loss Limit) breach events with admin filtering and statistics.

Purpose

Provides admin visibility into challenge failures caused by MLL breaches. When a user's account value drops to or below the minimum balance threshold during a challenge, UserPaperTradePortfolio records the breach event here. This DO is a simple append-only event store with query and aggregation capabilities.

• Single global instance (id: "global")
• All methods are synchronous (simple record store)
• Append-only -- no updates or deletes

Edge Cases

• Monetary values stored as strings (account_value_at_breach, mll_threshold, capital) to preserve BigNumber precision.
• No deduplication -- the same breach event could theoretically be recorded twice if the caller retries. The auto-increment ID differentiates them.
• Dynamic WHERE clause is built with parameterized queries to prevent SQL injection.
• Limit clamping -- limit is clamped to 1-100 regardless of input.