governance

type BudgetCheck struct {
	Scope CostScope
	Key   string
	Limit int64
}

type CostEvent struct {
	RunID      string    `json:"run_id"`
	TenantID   string    `json:"tenant_id"`
	SourceNode string    `json:"source_node"`
	RecordedAt time.Time `json:"recorded_at"`
	Usage      CostUsage `json:"usage"`
}

type CostLedger interface {
	Reserve(ctx context.Context, event CostEvent, limits []BudgetCheck) error
	Events(ctx context.Context, runID string) ([]CostEvent, error)
}

type CostScope string

type CostUsage struct {
	InputTokens  int64 `json:"input_tokens"`
	OutputTokens int64 `json:"output_tokens"`
	CostMicros   int64 `json:"cost_micros"`
}

type MemoryCostLedger struct {
	// contains filtered or unexported fields
}