fix: remove duplicate Zhipu usage provider

Keeps one Zhipu AI Coding Plan entry in usage settings
Preserves existing Zhipu aliases and config lookup
Removes duplicate backend quota registration

packages/ui/src/lib/quota/providers/index.ts

@@ -18,7 +18,6 @@ export const QUOTA_PROVIDERS: QuotaProviderMeta[] = [
   { id: 'minimax-cn-coding-plan', name: 'MiniMax Coding Plan (minimaxi.com)' },
   { id: 'minimax-coding-plan', name: 'MiniMax Coding Plan (minimax.io)' },
   { id: 'ollama-cloud', name: 'Ollama Cloud' },
-  { id: 'zhipuai-coding-plan', name: 'ZhipuAI' },
 ];
 
 export const QUOTA_PROVIDER_MAP = QUOTA_PROVIDERS.reduce<

packages/ui/src/types/quota.ts

@@ -12,8 +12,7 @@ export type QuotaProviderId =
   | 'zhipuai-coding-plan'
   | 'minimax-coding-plan'
   | 'minimax-cn-coding-plan'
-  | 'ollama-cloud'
-  | 'zhipuai-coding-plan';
+  | 'ollama-cloud';
 
 export interface UsageWindow {
   usedPercent: number | null;