feat(core): the pages of routers and home routers after Java, measured against Java

Routers and home routers start a web server on port 80 with Java's index,
log and routes pages in the project's language (routerPages.ts); the
firewall keeps a log per node that outlives a new start; RIP routes carry
the telling router's public address. TCP counts sequence numbers and
segments in Java's characters, not bytes. RouterWebRun records six stories,
with firewalls now built by ScenarioNetwork. Not taken from Java: its router
server sometimes never listening (a race in setAktiv), and </titel>.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

packages/core/src/runtime/snapshot.ts

@@ -23,6 +23,7 @@ import type {
   WebServerConfiguration,
 } from './config.js';
 import type { VirtualFileSystem } from '../model/virtualFileSystem.js';
+import type { PageLanguage } from './apps/routerPages.js';
 
 /** An installed web server: its configuration, and whether it is switched on (Java: WebServer.aktiv). */
 export interface WebServerSnapshot extends WebServerConfiguration {
@@ -89,6 +90,8 @@ export interface TopologySnapshot {
   readonly webBrowserNodeIds: ReadonlySet<Id>;
   /** Each node's files, which its programs read (a web server its pages). */
   readonly fileSystemsByNodeId: ReadonlyMap<Id, VirtualFileSystem>;
+  /** The language of the pages the devices write themselves (a router's), as Java's in the locale it runs in. */
+  readonly language: PageLanguage;
 }
 
 export interface TopologySnapshotInput {
@@ -110,6 +113,7 @@ export interface TopologySnapshotInput {
   webServersByNodeId?: ReadonlyMap<Id, WebServerSnapshot>;
   webBrowserNodeIds?: ReadonlySet<Id>;
   fileSystemsByNodeId?: ReadonlyMap<Id, VirtualFileSystem>;
+  language?: PageLanguage;
 }
 
 export function topologySnapshot(input: TopologySnapshotInput): TopologySnapshot {
@@ -132,6 +136,7 @@ export function topologySnapshot(input: TopologySnapshotInput): TopologySnapshot
     webServersByNodeId: input.webServersByNodeId ?? new Map(),
     webBrowserNodeIds: input.webBrowserNodeIds ?? new Set(),
     fileSystemsByNodeId: input.fileSystemsByNodeId ?? new Map(),
+    language: input.language ?? 'de',
   };
 }