Apply Composer changes: comprehensive API updates, migrations, middleware, and infrastructure improvements

- Add comprehensive database migrations (001-024) for schema evolution
- Enhance API schema with expanded type definitions and resolvers
- Add new middleware: audit logging, rate limiting, MFA enforcement, security, tenant auth
- Implement new services: AI optimization, billing, blockchain, compliance, marketplace
- Add adapter layer for cloud integrations (Cloudflare, Kubernetes, Proxmox, storage)
- Update Crossplane provider with enhanced VM management capabilities
- Add comprehensive test suite for API endpoints and services
- Update frontend components with improved GraphQL subscriptions and real-time updates
- Enhance security configurations and headers (CSP, CORS, etc.)
- Update documentation and configuration files
- Add new CI/CD workflows and validation scripts
- Implement design system improvements and UI enhancements

src/app/api/infrastructure/import/route.ts

@@ -0,0 +1,67 @@
+import { NextRequest, NextResponse } from 'next/server'
+import * as fs from 'fs'
+import * as path from 'path'
+import * as XLSX from 'xlsx'
+
+const DATA_DIR = path.join(process.cwd(), 'docs/infrastructure/data')
+
+export async function POST(request: NextRequest) {
+  try {
+    const formData = await request.formData()
+    const file = formData.get('file') as File
+    const targetFile = formData.get('targetFile') as string
+
+    if (!file || !targetFile) {
+      return NextResponse.json(
+        { error: 'File and targetFile are required' },
+        { status: 400 }
+      )
+    }
+
+    const buffer = Buffer.from(await file.arrayBuffer())
+    const filePath = path.join(DATA_DIR, targetFile)
+
+    // Handle different file types
+    if (file.name.endsWith('.json')) {
+      const data = JSON.parse(buffer.toString())
+      fs.writeFileSync(filePath, JSON.stringify(data, null, 2))
+    } else if (file.name.endsWith('.xlsx') || file.name.endsWith('.xls')) {
+      const workbook = XLSX.read(buffer, { type: 'buffer' })
+      const sheetName = workbook.SheetNames[0]
+      const worksheet = workbook.Sheets[sheetName]
+      const data = XLSX.utils.sheet_to_json(worksheet)
+      fs.writeFileSync(filePath, JSON.stringify(data, null, 2))
+    } else if (file.name.endsWith('.csv')) {
+      const csv = buffer.toString()
+      const lines = csv.split('\n')
+      const headers = lines[0].split(',').map((h) => h.trim().replace(/^"|"$/g, ''))
+      const data = lines.slice(1).map((line) => {
+        const values = line.split(',').map((v) => v.trim().replace(/^"|"$/g, ''))
+        return headers.reduce((obj, header, idx) => {
+          obj[header] = values[idx] || ''
+          return obj
+        }, {} as Record<string, any>)
+      })
+      fs.writeFileSync(filePath, JSON.stringify(data, null, 2))
+    } else {
+      return NextResponse.json({ error: 'Unsupported file type' }, { status: 400 })
+    }
+
+    return NextResponse.json({
+      success: true,
+      filename: targetFile,
+      records: Array.isArray(JSON.parse(fs.readFileSync(filePath, 'utf-8'))) 
+        ? JSON.parse(fs.readFileSync(filePath, 'utf-8')).length 
+        : 1,
+    })
+  } catch (error) {
+    return NextResponse.json(
+      {
+        error: 'Failed to import file',
+        message: error instanceof Error ? error.message : 'Unknown error',
+      },
+      { status: 500 }
+    )
+  }
+}
+