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

workflow-state-machine.mermaid

@@ -0,0 +1,65 @@
+stateDiagram-v2
+    [*] --> DRAFT: Create Request
+
+    DRAFT --> SUBMITTED: Submit for<br/>Review
+    DRAFT --> [*]: Abandon
+
+    SUBMITTED --> IN_REVIEW: Route to<br/>Dept Approvers
+    SUBMITTED --> [*]: Withdraw
+
+    IN_REVIEW --> APPROVED: All Depts<br/>Approve
+    IN_REVIEW --> REJECTED: Any Dept<br/>Rejects
+    IN_REVIEW --> PENDING_RESUBMISSION: Request<br/>Changes
+
+    PENDING_RESUBMISSION --> SUBMITTED: Resubmit with<br/>Changes
+    PENDING_RESUBMISSION --> [*]: Withdraw
+
+    APPROVED --> REVOKED: License<br/>Revocation
+    APPROVED --> [*]: Expired
+
+    REJECTED --> DRAFT: Appeal or<br/>Reapply
+    REJECTED --> [*]: Withdrawn
+
+    REVOKED --> [*]: End
+
+    note right of DRAFT
+        Local Draft
+        Applicant can edit
+        No blockchain record
+    end note
+
+    note right of SUBMITTED
+        Submitted to System
+        Hash recorded on chain
+        Locked from editing
+    end note
+
+    note right of IN_REVIEW
+        Multi-Dept Approval
+        Parallel workflows
+        Can be sequential
+    end note
+
+    note right of PENDING_RESUBMISSION
+        Waiting for changes
+        Applicant notified
+        Time limited window
+    end note
+
+    note right of APPROVED
+        License Granted
+        ERC-721 NFT minted
+        Verifiable on chain
+    end note
+
+    note right of REJECTED
+        Request Denied
+        Reason recorded
+        Can appeal (future)
+    end note
+
+    note right of REVOKED
+        License Cancelled
+        NFT burned
+        Audit trail kept
+    end note