fix(growth): harden AI jobs and cost controls

internal/growthreport/model.go

@@ -41,6 +41,8 @@ type Usage struct {
 	InputTokens       int64  `json:"inputTokens"`
 	OutputTokens      int64  `json:"outputTokens"`
 	LatencyMS         int64  `json:"latencyMs"`
+	ProviderRequests  int64  `json:"providerRequests"`
+	ReservedTokens    int64  `json:"reservedTokens"`
 	ProviderRequestID string `json:"providerRequestId,omitempty"`
 	EstimatedCost     string `json:"estimatedCost,omitempty"`
 }
@@ -77,6 +79,7 @@ type Record struct {
 	Usage            Usage
 	ManualRefresh    bool
 	TehranRefreshDay *time.Time
+	ClaimToken       string
 }
 
 type CreateRequest struct {