feat: Goa GEL Blockchain e-Licensing Platform - Full Stack Implementation

Complete implementation of the Goa Government e-Licensing platform with:

Backend:
- NestJS API with JWT authentication
- PostgreSQL database with Knex ORM
- Redis caching and session management
- MinIO document storage
- Hyperledger Besu blockchain integration
- Multi-department workflow system
- Comprehensive API tests (266/282 passing)

Frontend:
- Angular 21 with standalone components
- Angular Material + TailwindCSS UI
- Visual workflow builder
- Document upload with progress tracking
- Blockchain explorer integration
- Role-based dashboards (Admin, Department, Citizen)
- E2E tests with Playwright (37 tests)

Infrastructure:
- Docker Compose orchestration
- Blockscout blockchain explorer
- Development and production configurations

backend/src/database/models/wallet.model.ts

@@ -0,0 +1,32 @@
+import { Model, RelationMappings, RelationMappingsThunk } from 'objection';
+import { BaseModel } from './base.model';
+
+export class Wallet extends BaseModel {
+  static tableName = 'wallets';
+
+  id!: string;
+  address!: string;
+  encryptedPrivateKey!: string;
+  ownerType!: 'USER' | 'DEPARTMENT';
+  ownerId!: string;
+  isActive!: boolean;
+  createdAt!: Date;
+  updatedAt!: Date;
+
+  static get jsonSchema() {
+    return {
+      type: 'object',
+      required: ['address', 'encryptedPrivateKey', 'ownerType', 'ownerId'],
+      properties: {
+        id: { type: 'string', format: 'uuid' },
+        address: { type: 'string', maxLength: 42 },
+        encryptedPrivateKey: { type: 'string' },
+        ownerType: { type: 'string', enum: ['USER', 'DEPARTMENT'] },
+        ownerId: { type: 'string', format: 'uuid' },
+        isActive: { type: 'boolean', default: true },
+        createdAt: { type: 'string', format: 'date-time' },
+        updatedAt: { type: 'string', format: 'date-time' },
+      },
+    };
+  }
+}