Module budget 

Budget Enforcement — the promoter’s purse control.

The BudgetEnforcer checks spending limits before each LLM call and returns a BudgetVerdict indicating whether the request is allowed, approaching a limit (warning), or blocked (over budget).

Budget enforcement is opt-in: if no limits are configured for a fighter or globally, all requests are allowed.

Structs

BudgetEnforcer

Enforces spending limits by checking the metering engine before each LLM call. Supports per-fighter and global limits.

BudgetLimit

Spending limits for a fighter or globally.

BudgetStatus

Current budget status for display / API responses.

Enums

BudgetVerdict

The verdict from a budget check.