feat: Runtime configuration and Docker deployment improvements

Frontend:
- Add runtime configuration service for deployment-time API URL injection
- Create docker-entrypoint.sh to generate config.json from environment variables
- Update ApiService, ApprovalService, and DocumentViewer to use RuntimeConfigService
- Add APP_INITIALIZER to load runtime config before app starts

Backend:
- Fix init-blockchain.js to properly quote mnemonic phrases in .env file
- Improve docker-entrypoint.sh with health checks and better error handling

Docker:
- Add API_BASE_URL environment variable to frontend container
- Update docker-compose.yml with clear documentation for remote deployment
- Reorganize .env.example with clear categories (REQUIRED FOR REMOTE, PRODUCTION, AUTO-GENERATED)

Workflow fixes:
- Fix DepartmentApproval interface to match backend schema
- Fix stage transformation for 0-indexed stageOrder
- Fix workflow list to show correct stage count from definition.stages

Cleanup:
- Move development artifacts to .trash directory
- Remove root-level package.json (was only for utility scripts)
- Add .trash/ to .gitignore

frontend/src/app/features/documents/services/document.service.ts

@@ -89,16 +89,19 @@ function validateDocType(docType: DocumentType | string | undefined | null): Doc
   }
 
   const validDocTypes: DocumentType[] = [
-    'FIRE_SAFETY_CERTIFICATE',
-    'BUILDING_PLAN',
-    'PROPERTY_OWNERSHIP',
-    'INSPECTION_REPORT',
-    'POLLUTION_CERTIFICATE',
-    'ELECTRICAL_SAFETY_CERTIFICATE',
-    'STRUCTURAL_STABILITY_CERTIFICATE',
-    'IDENTITY_PROOF',
+    'FLOOR_PLAN',
+    'PHOTOGRAPH',
+    'ID_PROOF',
     'ADDRESS_PROOF',
+    'NOC',
+    'LICENSE_COPY',
     'OTHER',
+    'FIRE_SAFETY',
+    'HEALTH_CERT',
+    'TAX_CLEARANCE',
+    'SITE_PLAN',
+    'BUILDING_PERMIT',
+    'BUSINESS_LICENSE',
   ];
 
   if (!validDocTypes.includes(docType as DocumentType)) {