Separate JSON API backend (vm_api.py) + React+TanStack frontend scaffold

- vm_api.py: pure FastAPI JSON API on :8098 with CORS
- vm-api.service: systemd unit for API (replaces inline HTML vm_web.py for frontend)
- vm_web.py: kept intact as fallback; Apache now proxies /api/ -> :8098
- frontend/: Vite + React + TanStack Query scaffold
- Apache vhost updated: DocumentRoot -> frontend/dist, /api/ proxy, SPA fallback
- All original HTML pages still functional via :8099 during transition

frontend/node_modules/seroval-plugins/dist/dev/index.cjs

@@ -0,0 +1,8 @@
+Object.defineProperty(exports, Symbol.toStringTag, { value: "Module" });
+const require_web = require("./web-Cz0hD_-8.cjs");
+Object.defineProperty(exports, "web", {
+	enumerable: true,
+	get: function() {
+		return require_web.web_exports;
+	}
+});