Import december-2020-12-18 from private repo (scrubbed 2026-05-27)

Targets Rec Room 2020.12.18 client.

Re-import after adding:
- DorkNet.ClientMod/dorknet-clientmod.json.template — config schema
  the launcher's manifest-driven patcher renders into UserData/.
- tools/build-patcher-zip.ps1 — produces the dorknet-clientpatch-{key}.zip
  Release asset the launcher fetches.
- .github/workflows/release.yml — auto-publishes both Release assets
  on v1-december-* tag push.

Scrubbed via maintainer-side scrub-for-public.ps1: same drop rules as
the prior import, plus build-patcher-zip.ps1 added to the tools/
allow-list so it survives the scrub.

DorkNet.Server/admin-ui/vite.config.ts

@@ -0,0 +1,36 @@
+import { defineConfig } from 'vite';
+import react from '@vitejs/plugin-react';
+import path from 'node:path';
+
+// Source lives at DorkNet.Server/admin-ui; build emits straight into
+// DorkNet.Server/wwwroot/admin so the static file middleware picks it
+// up at admin.localhost without any extra publish wiring.
+export default defineConfig({
+  plugins: [react()],
+  base: '/',
+  resolve: {
+    alias: {
+      '@': path.resolve(__dirname, 'src'),
+    },
+  },
+  build: {
+    outDir: path.resolve(__dirname, '../wwwroot/admin'),
+    emptyOutDir: true,
+    target: 'es2022',
+    sourcemap: true,
+  },
+  server: {
+    port: 5173,
+    proxy: {
+      // Dev convenience: `npm run dev` proxies API calls to the
+      // running ASP.NET server so we can iterate on the SPA with HMR
+      // without dealing with CORS. Adjust target if the server runs
+      // on a non-default port locally.
+      '/api': {
+        target: 'http://localhost:80',
+        changeOrigin: true,
+        secure: false,
+      },
+    },
+  },
+});