feat: implement automated versioning and update docs

client/src/pages/AdminSettings.tsx

@@ -20,7 +20,12 @@ export default function AdminSettings() {
                     <ArrowLeft className="w-5 h-5" />
                 </Button>
                 <div>
-                    <h1 className="text-3xl font-bold tracking-tight">{t('settings.admin.title')}</h1>
+                    <div className="flex items-center gap-3">
+                        <h1 className="text-3xl font-bold tracking-tight">{t('settings.admin.title')}</h1>
+                        <span className="text-sm font-mono text-muted-foreground border px-2 py-0.5 rounded-md bg-muted/50">
+                            v{__APP_VERSION__}
+                        </span>
+                    </div>
                     <p className="text-muted-foreground">{t('settings.admin.description')}</p>
                 </div>
             </div>

client/src/vite-env.d.ts

@@ -0,0 +1,3 @@
+/// <reference types="vite/client" />
+
+declare const __APP_VERSION__: string;