Settings redesign: hub-based navigation, plus hardening and bug fixes

Rework the settings app around hub pages (home, network, displays, input,
apps, privacy, system) with a redesigned sidebar, shared nav state, and new
hub view components. Alongside the redesign: validate webview inputs into
root commands (users, firewall, snapshots, wifi), fix set_charge_threshold
writing the percentage via tee stdin, prevent streaming installs from
hanging on inherited stdin, add frontend type fixes, sync versions to
0.8.2, and clean up clippy/svelte-check warnings.

frontend/package.json

@@ -1,6 +1,6 @@
 {
   "name": "bos-settings-frontend",
-  "version": "0.8.0",
+  "version": "0.8.2",
   "description": "Frontend for BOS Settings",
   "type": "module",
   "scripts": {
@@ -23,6 +23,7 @@
     "@sveltejs/kit": "^2.9.0",
     "@sveltejs/vite-plugin-svelte": "^5.0.0",
     "@tauri-apps/cli": "^2",
+    "@types/node": "^26.4.0",
     "svelte": "^5.0.0",
     "svelte-check": "^4.0.0",
     "typescript": "~5.6.2",