docs: Update CHANGELOG and README for deployment models and troubleshooting

- Added multi-platform deployment architecture details (Web App, PWA, DApp) to README.md.
- Included comprehensive troubleshooting guides and fix scripts in README.md.
- Enhanced CHANGELOG.md with new features, fixes, and improvements, including TypeScript error resolutions and updated documentation structure.
- Revised development setup instructions in DEV_SETUP.md to reflect changes in script usage and environment variable setup.

scripts/setup-database.ps1

@@ -0,0 +1,76 @@
+# Database Setup Script
+
+Write-Host "`n========================================" -ForegroundColor Cyan
+Write-Host "   DATABASE SETUP" -ForegroundColor Cyan
+Write-Host "========================================`n" -ForegroundColor Cyan
+
+# Check if Docker is available
+if (-not (Get-Command docker -ErrorAction SilentlyContinue)) {
+    Write-Host "❌ Docker not found" -ForegroundColor Red
+    Write-Host "   Please install Docker Desktop or set up PostgreSQL manually" -ForegroundColor Yellow
+    Write-Host "   See docs/DATABASE_OPTIONS.md for manual setup instructions" -ForegroundColor Gray
+    exit 1
+}
+
+    Write-Host "[OK] Docker found" -ForegroundColor Green
+
+# Check if container already exists
+$existing = docker ps -a --filter "name=combo-postgres" --format "{{.Names}}"
+if ($existing) {
+    Write-Host "`n📦 Existing container found: $existing" -ForegroundColor Yellow
+    
+    # Check if running
+    $running = docker ps --filter "name=combo-postgres" --format "{{.Names}}"
+    if ($running) {
+        Write-Host "[OK] Container is already running" -ForegroundColor Green
+    } else {
+        Write-Host "🔄 Starting existing container..." -ForegroundColor Yellow
+        docker start combo-postgres
+        Start-Sleep -Seconds 3
+    }
+} else {
+    Write-Host "`n📦 Creating new PostgreSQL container..." -ForegroundColor Yellow
+    docker run --name combo-postgres `
+        -e POSTGRES_PASSWORD=postgres `
+        -e POSTGRES_DB=comboflow `
+        -p 5432:5432 `
+        -d postgres:15
+    
+    Write-Host "⏳ Waiting for database to initialize..." -ForegroundColor Yellow
+    Start-Sleep -Seconds 5
+}
+
+# Verify connection
+Write-Host "`n🔍 Verifying database connection..." -ForegroundColor Yellow
+Start-Sleep -Seconds 3
+
+$portCheck = Get-NetTCPConnection -LocalPort 5432 -State Listen -ErrorAction SilentlyContinue
+if ($portCheck) {
+    Write-Host "[OK] PostgreSQL is running on port 5432" -ForegroundColor Green
+    
+    # Test connection
+    try {
+        $testResult = docker exec combo-postgres psql -U postgres -d comboflow -c "SELECT 1;" 2>&1
+        if ($LASTEXITCODE -eq 0) {
+            Write-Host "[OK] Database connection successful" -ForegroundColor Green
+        } else {
+            Write-Host "⚠️  Connection test failed" -ForegroundColor Yellow
+        }
+    } catch {
+        Write-Host "⚠️  Could not test connection: $_" -ForegroundColor Yellow
+    }
+} else {
+    Write-Host "❌ PostgreSQL is not listening on port 5432" -ForegroundColor Red
+    Write-Host "   Check container logs: docker logs combo-postgres" -ForegroundColor Gray
+    exit 1
+}
+
+Write-Host "`n📝 Next steps:" -ForegroundColor Cyan
+Write-Host "   1. Update orchestrator/.env with:" -ForegroundColor White
+Write-Host "      DATABASE_URL=postgresql://postgres:postgres@localhost:5432/comboflow" -ForegroundColor Gray
+Write-Host "      RUN_MIGRATIONS=true" -ForegroundColor Gray
+Write-Host "`n   2. Run migrations:" -ForegroundColor White
+Write-Host "      cd orchestrator" -ForegroundColor Gray
+Write-Host "      npm run migrate" -ForegroundColor Gray
+Write-Host ""
+