feat: migrate drainage frontend to Vite

Caddyfile

@@ -0,0 +1,16 @@
+:80 {
+	root * /srv
+	encode zstd gzip
+
+	@runtimeConfig path /runtime-config.js
+	header @runtimeConfig Cache-Control "no-store"
+
+	@immutableAssets path /assets/*
+	header @immutableAssets Cache-Control "public, max-age=31536000, immutable"
+
+	@tts path /api/tts/edge
+	reverse_proxy @tts {$TTS_API_INTERNAL_BASE_URL:http://127.0.0.1:8790}
+
+	try_files {path} /index.html
+	file_server
+}