fix: enable official desktop browser integration settings

Return Bitwarden's desktop-ui-settings-dialog feature state so supported desktop clients use the official settings dialog with browser integration controls.

Fixes #315

src/config-response.ts

@@ -0,0 +1,52 @@
+import { LIMITS } from './config/limits';
+
+function buildIconServiceTemplate(origin: string): string {
+  return `${origin}/icons/{}/icon.png`;
+}
+
+function buildIconServiceCsp(origin: string): string {
+  return `img-src 'self' data: ${origin}`;
+}
+
+export function buildConfigResponse(origin: string) {
+  const fillAssistBase = `${origin}/fill-assist/`;
+  return {
+    version: LIMITS.compatibility.bitwardenServerVersion,
+    gitHash: 'nodewarden',
+    server: null,
+    environment: {
+      cloudRegion: 'self-hosted',
+      vault: origin,
+      api: origin + '/api',
+      identity: origin + '/identity',
+      notifications: origin + '/notifications',
+      icons: origin,
+      sso: '',
+      fillAssistRules: fillAssistBase,
+    },
+    push: {
+      pushTechnology: 0,
+      vapidPublicKey: null,
+    },
+    communication: null,
+    settings: {
+      disableUserRegistration: false,
+    },
+    _icon_service_url: buildIconServiceTemplate(origin),
+    _icon_service_csp: buildIconServiceCsp(origin),
+    featureStates: {
+      'cipher-key-encryption': LIMITS.compatibility.cipherKeyEncryptionFeatureEnabled,
+      'desktop-ui-settings-dialog': true,
+      'duo-redirect': true,
+      'email-verification': true,
+      'fill-assist-targeting-rules': true,
+      'pm-19051-send-email-verification': false,
+      'pm-19148-innovation-archive': true,
+      'pm-4516-devices-add-last-activity-date': true,
+      'pm-30529-webauthn-related-origins': true,
+      'unauth-ui-refresh': true,
+      'web-push': false,
+    },
+    object: 'config',
+  };
+}