refactor(cliproxy): resolve remaining review parity and cleanup nits

- export buildProviderMap from provider capabilities and reuse in auth-types

- add provider descriptions to backend capabilities and sync display names

- remove ui CLIPROXY_PORT alias and use CLIPROXY_DEFAULT_PORT directly

- return stable string from getProviderDescription

- extend backend/ui parity tests for display name and description values

ui/src/components/cliproxy/provider-editor/index.tsx

@@ -16,7 +16,7 @@ import {
   useCreatePreset,
   useDeletePreset,
 } from '@/hooks/use-cliproxy';
-import { CLIPROXY_PORT } from '@/lib/preset-utils';
+import { CLIPROXY_DEFAULT_PORT } from '@/lib/preset-utils';
 import { usePrivacy } from '@/contexts/privacy-context';
 import { useProviderEditor } from './use-provider-editor';
 import { CustomPresetDialog } from './custom-preset-dialog';
@@ -117,7 +117,7 @@ export function ProviderEditor({
   const effectiveApiKey = authTokens?.apiKey?.value ?? 'ccs-internal-managed';
 
   const handleApplyPreset = (updates: Record<string, string>) => {
-    const effectivePort = port ?? CLIPROXY_PORT;
+    const effectivePort = port ?? CLIPROXY_DEFAULT_PORT;
     updateEnvValues({
       ANTHROPIC_BASE_URL: `http://127.0.0.1:${effectivePort}/api/provider/${provider}`,
       ANTHROPIC_AUTH_TOKEN: effectiveApiKey,
@@ -127,7 +127,7 @@ export function ProviderEditor({
   };
 
   const handleCustomPresetApply = (values: ModelMappingValues, presetName?: string) => {
-    const effectivePort = port ?? CLIPROXY_PORT;
+    const effectivePort = port ?? CLIPROXY_DEFAULT_PORT;
     updateEnvValues({
       ANTHROPIC_BASE_URL: `http://127.0.0.1:${effectivePort}/api/provider/${provider}`,
       ANTHROPIC_AUTH_TOKEN: effectiveApiKey,

ui/src/components/setup/wizard/constants.ts

@@ -27,7 +27,7 @@ const WIZARD_PROVIDER_ORDER: CLIProxyProvider[] = [
 export const PROVIDERS: ProviderOption[] = WIZARD_PROVIDER_ORDER.map((id) => ({
   id,
   name: getProviderDisplayName(id),
-  description: getProviderDescription(id) || '',
+  description: getProviderDescription(id),
 }));
 
 export const ALL_STEPS = ['provider', 'auth', 'variant', 'success'];

ui/src/lib/preset-utils.ts

@@ -7,9 +7,6 @@ import { MODEL_CATALOGS } from './model-catalogs';
 import { CLIPROXY_DEFAULT_PORT } from './default-ports';
 export { CLIPROXY_DEFAULT_PORT } from './default-ports';
 
-/** CLIProxy port - should match the backend configuration */
-export const CLIPROXY_PORT = CLIPROXY_DEFAULT_PORT;
-
 /** Default fallback API key if fetch fails */
 const DEFAULT_API_KEY = 'ccs-internal-managed';
 
@@ -33,7 +30,7 @@ async function fetchEffectiveApiKey(): Promise<string> {
  * Uses the first model's presetMapping or falls back to using defaultModel for all tiers
  *
  * @param provider - The provider ID (e.g., 'gemini', 'codex', 'agy')
- * @param port - Optional custom port (defaults to CLIPROXY_PORT)
+ * @param port - Optional custom port (defaults to CLIPROXY_DEFAULT_PORT)
  * @returns Object with success status and applied preset name
  */
 export async function applyDefaultPreset(

ui/src/lib/provider-config.ts

@@ -115,9 +115,9 @@ export function getProviderDisplayName(provider: string): string {
 }
 
 /** Map provider to user-facing short description */
-export function getProviderDescription(provider: string): string | undefined {
+export function getProviderDescription(provider: string): string {
   const normalized = provider.toLowerCase();
-  if (!isValidProvider(normalized)) return undefined;
+  if (!isValidProvider(normalized)) return '';
   return PROVIDER_METADATA[normalized].description;
 }