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

system-context.mermaid

@@ -0,0 +1,40 @@
+graph TB
+    subgraph External["External Actors"]
+        Citizens["👤 Citizens"]
+        Depts["🏢 Government Departments"]
+        DeptOps["⚙️ Department Operators"]
+        PlatformOps["🛠️ Platform Operators"]
+    end
+
+    subgraph GELPlatform["Goa GEL Platform"]
+        GEL["Government E-License<br/>Verification Platform"]
+    end
+
+    subgraph ExternalSystems["External Systems"]
+        DigiLocker["📱 DigiLocker Mock<br/>(Document Verification)"]
+        LegacySys["💼 Legacy Department<br/>Systems"]
+        NBF["🌐 National Blockchain<br/>Federation<br/>(Future)"]
+    end
+
+    Citizens -->|Submit License<br/>Request| GEL
+    Citizens -->|Upload<br/>Documents| GEL
+    Citizens -->|Track Status| GEL
+
+    Depts -->|Configure Approval<br/>Workflows| GEL
+    Depts -->|Review & Approve<br/>Requests| GEL
+
+    DeptOps -->|Manage Department<br/>Users| GEL
+    DeptOps -->|Configure Rules| GEL
+
+    PlatformOps -->|System Admin| GEL
+    PlatformOps -->|Monitor & Maintain| GEL
+
+    GEL -->|Verify Document<br/>Authenticity| DigiLocker
+    GEL -->|Legacy Data<br/>Integration| LegacySys
+    GEL -->|Future: Share<br/>License Records| NBF
+
+    LegacySys -->|Citizen Data| GEL
+
+    style GEL fill:#1e40af,stroke:#1e3a8a,stroke-width:3px,color:#fff
+    style External fill:#f0f9ff,stroke:#0369a1,stroke-width:2px
+    style ExternalSystems fill:#fef3c7,stroke:#b45309,stroke-width:2px