Improve netcode and simplify (#4)

- Simplify the logic wherever possible to remove overengineering and simplify the netcode
- Actually improve the netcode
- The new lines are mainly the package locks and tests

Reviewed-on: https://home.schmelczer.dev/git/andras/decla-red/pulls/4

frontend/src/scripts/configuration.ts

@@ -1,35 +1,9 @@
-/**
- * Hardcoded list of game servers the landing page offers to players.
- *
- * Each entry is the public origin of a dockerized `doppler-server` instance.
- * The join screen polls `<origin>/state` (see `serverInformationEndpoint`) and
- * only shows a server once it responds, so listing an offline origin here is
- * harmless. Add or remove origins as you deploy more server containers.
- */
-// This origin predates the rebrand; update it once the game server is
-// redeployed under a doppler subdomain.
 const productionServers: Array<string> = ['https://declared.schmelczer.dev'];
 
-/**
- * When the page is served from localhost (i.e. the webpack-dev-server), also
- * offer the local backend so a `npm start` server can be joined during
- * development. The backend's default port is 3000 (see backend/src/options.ts).
- * In production the page is served from its own hostname, so this never leaks.
- */
 const isDevelopment =
   typeof location !== 'undefined' &&
   (location.hostname === 'localhost' || location.hostname === '127.0.0.1');
 
-const servers: Array<string> = isDevelopment
+export const servers: Array<string> = isDevelopment
   ? [`http://${location.hostname}:3000`, ...productionServers]
   : productionServers;
-
-export abstract class Configuration {
-  public static async initialize(): Promise<void> {
-    // Kept async for call-site compatibility; the server list is static now.
-  }
-
-  public static get servers(): Array<string> {
-    return servers;
-  }
-}