refactor: migrate interfaces to dedicated directory

Reorganizes TypeScript interfaces into a modular structure:
- Create dedicated interfaces directory with specialized files
- Split interfaces by domain (claims, common, limits, records, user)
- Update imports in endorserServer.ts to use new interface locations
- Replace 'any' types with 'unknown' for better type safety
- Add proper type imports and exports

This improves code organization and maintainability by:
- Centralizing interface definitions
- Reducing file size of endorserServer.ts
- Making interface relationships more explicit
- Improving type safety with stricter types

src/interfaces/records.ts

@@ -0,0 +1,90 @@
+import { GiveVerifiableCredential, OfferVerifiableCredential } from "./claims";
+
+// a summary record; the VC is found the fullClaim field
+export interface GiveSummaryRecord {
+  agentDid: string;
+  amount: number;
+  amountConfirmed: number;
+  description: string;
+  fullClaim: GiveVerifiableCredential;
+  fulfillsHandleId: string;
+  fulfillsPlanHandleId?: string;
+  fulfillsType?: string;
+  handleId: string;
+  issuedAt: string;
+  issuerDid: string;
+  jwtId: string;
+  providerPlanHandleId?: string;
+  recipientDid: string;
+  unit: string;
+}
+
+// a summary record; the VC is found the fullClaim field
+export interface OfferSummaryRecord {
+  amount: number;
+  amountGiven: number;
+  amountGivenConfirmed: number;
+  fullClaim: OfferVerifiableCredential;
+  fulfillsPlanHandleId: string;
+  handleId: string;
+  issuerDid: string;
+  jwtId: string;
+  nonAmountGivenConfirmed: number;
+  objectDescription: string;
+  offeredByDid: string;
+  recipientDid: string;
+  requirementsMet: boolean;
+  unit: string;
+  validThrough: string;
+}
+
+export interface OfferToPlanSummaryRecord extends OfferSummaryRecord {
+  planName: string;
+}
+
+// a summary record; the VC is not currently part of this record
+export interface PlanSummaryRecord {
+  agentDid?: string;
+  description: string;
+  endTime?: string;
+  fulfillsPlanHandleId: string;
+  handleId: string;
+  image?: string;
+  issuerDid: string;
+  locLat?: number;
+  locLon?: number;
+  name?: string;
+  startTime?: string;
+  url?: string;
+}
+
+/**
+ * Represents data about a project
+ *
+ * @deprecated
+ * (Maybe we should use PlanSummaryRecord instead, either by adding rowId or by iterating with jwtId.)
+ **/
+export interface PlanData {
+  /**
+   * Description of the project
+   **/
+  description: string;
+  /**
+   * URL referencing information about the project
+   **/
+  handleId: string;
+  image?: string;
+  /**
+   * The DID of the issuer
+   */
+  issuerDid: string;
+  /**
+   * Name of the project
+   **/
+  name: string;
+  /**
+   * The identifier of the project record -- different from jwtId
+   * (Maybe we should use the jwtId to iterate through the records instead.)
+   **/
+  rowId?: string;
+}