Add interfaces package

ts/data/audit.ts

@@ -0,0 +1,14 @@
+export type TAuditReceiptKind = 'tool' | 'approval' | 'automation' | 'agent' | 'system';
+
+export interface IAuditReceipt {
+  id: string;
+  kind: TAuditReceiptKind;
+  callerId: string;
+  toolId?: string;
+  approvalId?: string;
+  scope?: string;
+  inputSummary: string;
+  outputSummary: string;
+  reversible: boolean;
+  createdAt: string;
+}