refactor(cliproxy): DRY provider lists into single source of truth

- unify CLIPROXY_SUPPORTED_PROVIDERS to import from CLIPROXY_PROVIDER_IDS
- replace 4 inline union types with CLIProxyProvider import
- replace hardcoded provider arrays in migration-manager and proxy-routes
- remove duplicate PROVIDER_DISPLAY_NAMES, use getProviderDisplayName()
- sync test now imports from ui/src/lib/provider-config instead of hardcoded array

Adding a new CLIProxy provider no longer requires updating 14+ hardcoded lists.

src/cliproxy/config/generator.ts

@@ -6,6 +6,7 @@
 import * as fs from 'fs';
 import * as path from 'path';
 import { CLIProxyProvider, ProviderConfig } from '../types';
+import { getProviderDisplayName } from '../provider-capabilities';
 import { getModelMappingFromConfig } from '../base-config-loader';
 import { loadOrCreateUnifiedConfig } from '../../config/unified-config-loader';
 import { getEffectiveApiKey, getEffectiveManagementSecret } from '../auth-token-manager';
@@ -46,34 +47,17 @@ const DEFAULT_ANTIGRAVITY_ALIASES: Array<{ name: string; alias: string; fork?: b
   { name: 'claude-opus-4-6-thinking', alias: 'gemini-claude-opus-4-6-thinking', fork: true },
 ];
 
-/** Provider display names (static metadata) */
-const PROVIDER_DISPLAY_NAMES: Record<CLIProxyProvider, string> = {
-  gemini: 'Gemini',
-  codex: 'Codex',
-  agy: 'Antigravity',
-  qwen: 'Qwen Code',
-  iflow: 'iFlow',
-  kiro: 'Kiro (AWS)',
-  ghcp: 'GitHub Copilot (OAuth)',
-  claude: 'Claude (Anthropic)',
-};
-
 /**
  * Get provider configuration
  * Model mappings are loaded from config/base-{provider}.settings.json
  */
 export function getProviderConfig(provider: CLIProxyProvider): ProviderConfig {
-  const displayName = PROVIDER_DISPLAY_NAMES[provider];
-  if (!displayName) {
-    throw new Error(`Unknown provider: ${provider}`);
-  }
-
   // Load models from base config file
   const models = getModelMappingFromConfig(provider);
 
   return {
     name: provider,
-    displayName,
+    displayName: getProviderDisplayName(provider),
     models,
     requiresOAuth: true, // All CLIProxy providers require OAuth
   };

src/config/migration-manager.ts

@@ -18,6 +18,7 @@ import { getCcsDir } from '../utils/config-manager';
 import { expandPath } from '../utils/helpers';
 import type { ProfileConfig, AccountConfig, CLIProxyVariantConfig } from './unified-config-types';
 import { createEmptyUnifiedConfig } from './unified-config-types';
+import { CLIPROXY_PROVIDER_IDS } from '../cliproxy/provider-capabilities';
 import { saveUnifiedConfig, hasUnifiedConfig, loadUnifiedConfig } from './unified-config-loader';
 import { infoBox, warn } from '../utils/ui';
 
@@ -203,7 +204,7 @@ export async function migrate(dryRun = false): Promise<MigrationResult> {
     // 6b. Migrate built-in CLIProxy OAuth profile settings (gemini, codex, agy, qwen, iflow)
     // Keep settings in *.settings.json files - only record reference in config.yaml
     // This matches Claude's ~/.claude/settings.json pattern for user familiarity
-    const builtInProviders = ['gemini', 'codex', 'agy', 'qwen', 'iflow'];
+    const builtInProviders = [...CLIPROXY_PROVIDER_IDS];
     for (const provider of builtInProviders) {
       const settingsFile = `${provider}.settings.json`;
       const settingsPath = path.join(ccsDir, settingsFile);

src/config/unified-config-types.ts

@@ -10,6 +10,8 @@
  */
 
 import type { TargetType } from '../targets/target-adapter';
+import type { CLIProxyProvider } from '../cliproxy/types';
+import { CLIPROXY_PROVIDER_IDS } from '../cliproxy/provider-capabilities';
 
 /**
  * Unified config version.
@@ -25,18 +27,9 @@ export const UNIFIED_CONFIG_VERSION = 8;
 
 /**
  * Supported CLIProxy providers.
- * Includes all OAuth-based providers supported by CLIProxyAPI.
+ * Derived from CLIPROXY_PROVIDER_IDS — single source of truth in provider-capabilities.ts.
  */
-export const CLIPROXY_SUPPORTED_PROVIDERS = [
-  'gemini',
-  'codex',
-  'agy',
-  'qwen',
-  'iflow',
-  'kiro',
-  'ghcp',
-  'claude',
-] as const;
+export const CLIPROXY_SUPPORTED_PROVIDERS = CLIPROXY_PROVIDER_IDS;
 
 /**
  * Account configuration (formerly in profiles.json).
@@ -80,7 +73,7 @@ export type OAuthAccounts = Record<string, string>;
  */
 export interface CLIProxyVariantConfig {
   /** Base provider to use */
-  provider: 'gemini' | 'codex' | 'agy' | 'qwen' | 'iflow' | 'kiro' | 'ghcp' | 'claude';
+  provider: CLIProxyProvider;
   /** Account nickname (references oauth_accounts) */
   account?: string;
   /** Path to settings file (e.g., "~/.ccs/gemini-custom.settings.json") */
@@ -98,14 +91,14 @@ export interface CLIProxyVariantConfig {
  */
 export interface CompositeTierConfig {
   /** Provider for this tier */
-  provider: 'gemini' | 'codex' | 'agy' | 'qwen' | 'iflow' | 'kiro' | 'ghcp' | 'claude';
+  provider: CLIProxyProvider;
   /** Model ID to use for this tier */
   model: string;
   /** Account nickname (optional, references oauth_accounts) */
   account?: string;
   /** Fallback provider+model if primary fails */
   fallback?: {
-    provider: 'gemini' | 'codex' | 'agy' | 'qwen' | 'iflow' | 'kiro' | 'ghcp' | 'claude';
+    provider: CLIProxyProvider;
     model: string;
     account?: string;
   };

src/types/config.ts

@@ -3,6 +3,8 @@
  * Source: ~/.ccs/config.json
  */
 
+import type { CLIProxyProvider } from '../cliproxy/types';
+
 /**
  * Profile configuration mapping
  * Maps profile names to settings.json paths
@@ -18,7 +20,7 @@ export interface ProfilesConfig {
  */
 export interface CLIProxyVariantConfig {
   /** CLIProxy provider to use */
-  provider: 'gemini' | 'codex' | 'agy' | 'qwen' | 'iflow' | 'kiro' | 'ghcp' | 'claude';
+  provider: CLIProxyProvider;
   /** Path to settings.json with custom model configuration (optional) */
   settings?: string;
   /** Account identifier for multi-account support (optional, defaults to 'default') */

src/web-server/routes/proxy-routes.ts

@@ -16,6 +16,7 @@ import {
   DEFAULT_CLIPROXY_SERVER_CONFIG,
   CliproxyServerConfig,
 } from '../../config/unified-config-types';
+import { CLIPROXY_PROVIDER_IDS } from '../../cliproxy/provider-capabilities';
 
 const router = Router();
 
@@ -113,7 +114,7 @@ router.put('/backend', async (req: Request, res: Response) => {
       config.cliproxy = {
         backend,
         oauth_accounts: {},
-        providers: ['gemini', 'codex', 'agy', 'qwen', 'iflow', 'kiro', 'ghcp'],
+        providers: [...CLIPROXY_PROVIDER_IDS],
         variants: {},
       };
     } else {

tests/unit/cliproxy/backend-ui-provider-arrays-sync.test.ts

@@ -7,34 +7,23 @@
 
 import { describe, expect, test } from 'bun:test';
 import { CLIPROXY_PROFILES } from '../../../src/auth/profile-detector';
-
-// UI providers (must manually sync - this test validates the sync)
-const UI_CLIPROXY_PROVIDERS = [
-  'gemini',
-  'codex',
-  'agy',
-  'qwen',
-  'iflow',
-  'kiro',
-  'ghcp',
-  'claude',
-] as const;
+import { CLIPROXY_PROVIDERS } from '../../../ui/src/lib/provider-config';
 
 describe('Provider Sync', () => {
   test('backend CLIPROXY_PROFILES matches UI CLIPROXY_PROVIDERS', () => {
     const backend = [...CLIPROXY_PROFILES].sort();
-    const ui = [...UI_CLIPROXY_PROVIDERS].sort();
+    const ui = [...CLIPROXY_PROVIDERS].sort();
 
     expect(backend).toEqual(ui);
   });
 
   test('both arrays have same length', () => {
-    expect(CLIPROXY_PROFILES.length).toBe(UI_CLIPROXY_PROVIDERS.length);
+    expect(CLIPROXY_PROFILES.length).toBe(CLIPROXY_PROVIDERS.length);
   });
 
   test('UI array contains all backend providers', () => {
     for (const provider of CLIPROXY_PROFILES) {
-      expect(UI_CLIPROXY_PROVIDERS).toContain(provider);
+      expect(CLIPROXY_PROVIDERS).toContain(provider);
     }
   });
 });