refactor(ui): 移除空壳行业资讯 Tab + Provider URL 去重

- SimpleSidebar: 移除空壳"行业资讯" Tab 和 Newspaper icon import
- ModelsAPI.tsx: AVAILABLE_PROVIDERS 引用 LLM_PROVIDER_URLS 常量
- models.ts: PROVIDER_DEFAULTS 引用 api-urls.ts，消除重复 URL 定义
- 所有 Provider URL 现在统一在 api-urls.ts 维护

desktop/src/constants/models.ts

@@ -5,6 +5,8 @@
  * Backend (Rust) should use the same values in kernel_commands.rs
  */
 
+import { LLM_PROVIDER_URLS } from './api-urls';
+
 // === Default Model Configuration ===
 
 /**
@@ -31,58 +33,58 @@ export const DEFAULT_TEMPERATURE = 0.7 as const;
 /**
  * Default base URL for OpenAI API
  */
-export const DEFAULT_OPENAI_BASE_URL = 'https://api.openai.com/v1' as const;
+export const DEFAULT_OPENAI_BASE_URL = LLM_PROVIDER_URLS.OPENAI as string;
 
 /**
  * Default base URL for Anthropic API
  */
-export const DEFAULT_ANTHROPIC_BASE_URL = 'https://api.anthropic.com' as const;
+export const DEFAULT_ANTHROPIC_BASE_URL = LLM_PROVIDER_URLS.ANTHROPIC as string;
 
 // === Provider-Specific Defaults ===
 
 export const PROVIDER_DEFAULTS = {
   openai: {
-    baseUrl: 'https://api.openai.com/v1',
+    baseUrl: LLM_PROVIDER_URLS.OPENAI,
     defaultModel: 'gpt-4o-mini',
   },
   anthropic: {
-    baseUrl: 'https://api.anthropic.com',
+    baseUrl: LLM_PROVIDER_URLS.ANTHROPIC,
     defaultModel: 'claude-sonnet-4-20250514',
   },
   zhipu: {
-    baseUrl: 'https://open.bigmodel.cn/api/paas/v4',
+    baseUrl: LLM_PROVIDER_URLS.ZHIPU,
     defaultModel: 'glm-4-flash-250414',
   },
   zhipu_coding: {
-    baseUrl: 'https://open.bigmodel.cn/api/coding/paas/v4',
+    baseUrl: LLM_PROVIDER_URLS.ZHIPU_CODING,
     defaultModel: 'glm-4-flash-250414',
   },
   kimi: {
-    baseUrl: 'https://api.moonshot.cn/v1',
+    baseUrl: LLM_PROVIDER_URLS.KIMI,
     defaultModel: 'moonshot-v1-8k',
   },
   kimi_coding: {
-    baseUrl: 'https://api.kimi.com/coding/v1',
+    baseUrl: LLM_PROVIDER_URLS.KIMI_CODING,
     defaultModel: 'kimi-for-coding',
   },
   qwen: {
-    baseUrl: 'https://dashscope.aliyuncs.com/compatible-mode/v1',
+    baseUrl: LLM_PROVIDER_URLS.QWEN,
     defaultModel: 'qwen-turbo',
   },
   qwen_coding: {
-    baseUrl: 'https://coding.dashscope.aliyuncs.com/v1',
+    baseUrl: LLM_PROVIDER_URLS.QWEN_CODING,
     defaultModel: 'qwen3-coder-next',
   },
   deepseek: {
-    baseUrl: 'https://api.deepseek.com/v1',
+    baseUrl: LLM_PROVIDER_URLS.DEEPSEEK,
     defaultModel: 'deepseek-chat',
   },
   gemini: {
-    baseUrl: 'https://generativelanguage.googleapis.com/v1beta',
+    baseUrl: LLM_PROVIDER_URLS.GEMINI,
     defaultModel: 'gemini-2.0-flash',
   },
   local: {
-    baseUrl: 'http://localhost:11434/v1',
+    baseUrl: LLM_PROVIDER_URLS.OLLAMA,
     defaultModel: 'llama3',
   },
 } as const;