feat: add Kimi (moonshot) and full provider support in model configs

- backend: expand valid_providers from 4 to full frontend provider list
  (module-level VALID_PROVIDERS constant, used by create + update)
- backend: test endpoint gains generic OpenAI-compatible branch
  (moonshot/qwen/zhipu/siliconflow etc. via AsyncOpenAI direct call)
- frontend: Kimi preset models add kimi-k2-0905/0711/turbo + kimi-latest
  alongside legacy moonshot-v1 series

Verified: moonshot config create 201 (was 400), test endpoint reaches
api.moonshot.cn and returns provider auth error with dummy key.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend/app/api/model_configs.py

@@ -29,10 +29,28 @@ router = APIRouter(
 )
 
 
+# 与前端 ModelConfigs.vue 的提供商列表保持一致。
+# anthropic/google/cohere 为原生 API；其余均走 OpenAI 兼容端点。
+VALID_PROVIDERS = [
+    'openai', 'deepseek', 'anthropic', 'local',
+    'qwen', 'zhipu', 'baidu', 'moonshot', 'bytedance', 'minimax',
+    'siliconflow', 'xunfei', 'hunyuan', 'yi', 'baichuan', 'openrouter',
+    'cohere', 'xai', 'together', 'fireworks', 'perplexity', 'deepinfra',
+    'groq', 'google', 'mistral',
+]
+
+# 可用 OpenAI 兼容协议直连测试的 provider（anthropic/google/cohere 协议不同，暂除外）
+OPENAI_COMPATIBLE_PROVIDERS = {
+    'local', 'qwen', 'zhipu', 'baidu', 'moonshot', 'bytedance', 'minimax',
+    'siliconflow', 'xunfei', 'hunyuan', 'yi', 'baichuan', 'openrouter',
+    'xai', 'together', 'fireworks', 'perplexity', 'deepinfra', 'groq', 'mistral',
+}
+
+
 class ModelConfigCreate(BaseModel):
     """模型配置创建模型"""
     name: str
-    provider: str  # openai/deepseek/anthropic/local
+    provider: str  # 见 VALID_PROVIDERS
     model_name: str
     api_key: str
     base_url: Optional[str] = None
@@ -103,8 +121,7 @@ async def create_model_config(
     注意：API密钥会加密存储
     """
     # 验证提供商
-    valid_providers = ['openai', 'deepseek', 'anthropic', 'local']
-    if config_data.provider not in valid_providers:
+    if config_data.provider not in VALID_PROVIDERS:
         raise ValidationError(f"不支持的提供商: {config_data.provider}")
 
     # 检查名称是否重复
@@ -189,8 +206,7 @@ async def update_model_config(
         config.name = config_data.name
     
     if config_data.provider is not None:
-        valid_providers = ['openai', 'deepseek', 'anthropic', 'local']
-        if config_data.provider not in valid_providers:
+        if config_data.provider not in VALID_PROVIDERS:
             raise ValidationError(f"不支持的提供商: {config_data.provider}")
         config.provider = config_data.provider
     
@@ -277,6 +293,21 @@ async def test_model_config(
                 api_key=decrypted_api_key,
                 base_url=config.base_url
             )
+        elif config.provider in OPENAI_COMPATIBLE_PROVIDERS:
+            # OpenAI 兼容协议通用测试（moonshot/qwen/zhipu/siliconflow 等）
+            if not config.base_url:
+                return {
+                    "status": "error",
+                    "message": f"提供商 {config.provider} 需要填写 API 地址（base_url）"
+                }
+            from openai import AsyncOpenAI
+            client = AsyncOpenAI(api_key=decrypted_api_key, base_url=config.base_url)
+            await client.chat.completions.create(
+                model=config.model_name,
+                messages=[{"role": "user", "content": "test"}],
+                max_tokens=5,
+                timeout=30,
+            )
         else:
             return {
                 "status": "warning",

frontend/src/views/ModelConfigs.vue

@@ -376,6 +376,10 @@ function createModelGroups(): ProviderGroup[] {
     {
       provider: 'moonshot', label: '月之暗面 Kimi', defaultBaseUrl: 'https://api.moonshot.cn/v1',
       models: [
+        { name: 'kimi-k2-0905-preview', desc: 'K2 增强版', price: '¥4/16', checked: false },
+        { name: 'kimi-k2-0711-preview', desc: 'K2 旗舰', price: '¥4/16', checked: false },
+        { name: 'kimi-k2-turbo-preview', desc: 'K2 高速版', price: '¥8/32', checked: false },
+        { name: 'kimi-latest', desc: '自动指向最新', price: '¥4/16', checked: false },
         { name: 'moonshot-v1-8k', desc: '标准长度', price: '¥0.15/0.15', checked: false },
         { name: 'moonshot-v1-32k', desc: '中长文本', price: '¥0.3/0.3', checked: false },
         { name: 'moonshot-v1-128k', desc: '超长文本', price: '¥0.6/0.6', checked: false },