fix: add claude provider to statsProviderMap, UI types, and provider arrays

Fixes remaining edge cases from #382:
- Add anthropic/claude mapping to statsProviderMap in cliproxy-auth-routes
- Add 'claude' case to provider-refreshers switch statement
- Add 'claude' to 4 UI type definitions in api-client.ts
- Add 'claude' to cliproxy-dialog providers array and options
- Add 'claude' to use-cliproxy-auth-flow VALID_PROVIDERS
- Fix wizard index.tsx type cast to include all 8 providers

src/cliproxy/auth/provider-refreshers/index.ts

@@ -35,6 +35,7 @@ export async function refreshToken(
     case 'iflow':
     case 'kiro':
     case 'ghcp':
+    case 'claude':
       return {
         success: false,
         error: `Token refresh not yet implemented for ${provider}`,

src/web-server/routes/cliproxy-auth-routes.ts

@@ -71,6 +71,8 @@ router.get('/', async (_req: Request, res: Response): Promise<void> => {
       iflow: 'iflow',
       kiro: 'kiro',
       copilot: 'ghcp', // CLIProxyAPI returns 'copilot', we map to 'ghcp'
+      anthropic: 'claude', // CLIProxyAPI returns 'anthropic', we map to 'claude'
+      claude: 'claude',
     };
 
     // Update lastUsedAt for providers with recent activity