feat: LAD A-Team CIS Compliance Report, React SPA, i18n, report management, explorer UX fixes

- Professional Oracle-format compliance report with RAG remediation from ADB vector store
- React 19 SPA at /app/ (16 pages, TypeScript, Vite, Zustand, i18n pt/en 625 keys)
- Report delete endpoint, embed individual report files into vector store
- Terraform ZIP download (client-side, pure JS)
- Explorer silent polling during start/stop (no flickering)
- HTML report and compliance report sections start minimized
- Token auth fix for compliance report CSV download links

frontend-react/postcss.config.js

@@ -0,0 +1,5 @@
+export default {
+  plugins: {
+    '@tailwindcss/postcss': {},
+  },
+};