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

backend/scripts/init-db.sh

@@ -1,30 +1,16 @@
 #!/bin/bash
+# This script is now deprecated - database initialization is handled by docker-entrypoint.sh
+# Kept for backward compatibility
+
 set -e
 
-echo "🔄 Waiting for database to be ready..."
+echo "Database initialization is handled by docker-entrypoint.sh"
+echo "This script will only wait for PostgreSQL to be ready..."
+
+# Wait for database to be ready
 until PGPASSWORD=$DATABASE_PASSWORD psql -h "$DATABASE_HOST" -U "$DATABASE_USER" -d "$DATABASE_NAME" -c '\q' 2>/dev/null; do
-  echo "⏳ PostgreSQL is unavailable - sleeping"
+  echo "PostgreSQL is unavailable - sleeping"
   sleep 2
 done
 
-echo "✅ PostgreSQL is up - checking if database is initialized..."
-
-# Check if users table exists (indicating database is already set up)
-TABLE_EXISTS=$(PGPASSWORD=$DATABASE_PASSWORD psql -h "$DATABASE_HOST" -U "$DATABASE_USER" -d "$DATABASE_NAME" -tAc "SELECT EXISTS (SELECT FROM information_schema.tables WHERE table_name = 'users');" 2>/dev/null || echo "f")
-
-if [ "$TABLE_EXISTS" = "t" ]; then
-  echo "✅ Database already initialized, skipping setup."
-else
-  echo "📦 First time setup - creating tables and seeding data..."
-
-  # Run the SQL scripts directly
-  echo "Creating tables..."
-  PGPASSWORD=$DATABASE_PASSWORD psql -h "$DATABASE_HOST" -U "$DATABASE_USER" -d "$DATABASE_NAME" -f /app/scripts/create-all-tables.sql
-
-  echo "🌱 Seeding initial data..."
-  PGPASSWORD=$DATABASE_PASSWORD psql -h "$DATABASE_HOST" -U "$DATABASE_USER" -d "$DATABASE_NAME" -f /app/scripts/seed-initial-data.sql
-
-  echo "✅ Database initialized successfully!"
-fi
-
-echo "✅ Database ready!"
+echo "PostgreSQL is up and accepting connections"