feat(aiops): 模型配置默认 DeepSeek/flash + 模型名真下拉

首次进入配置页自动预填 DeepSeek 端点与 deepseek-flash(只需填 Key);模型名从
datalist 换 shadcn Select(随供应商联动,末项「自定义模型…」转手输)

frontend/src/i18n/locales/en/aiops.ts

@@ -58,6 +58,7 @@ export default {
   },
 
   config: {
+    customModel: 'Custom model…',
     advanced: 'Advanced',
     providerSelectHint: 'Pick a provider to autofill endpoint and model',
     enabled: 'Enable AI analysis',

frontend/src/i18n/locales/zh/aiops.ts

@@ -58,6 +58,7 @@ export default {
   },
 
   config: {
+    customModel: '自定义模型…',
     advanced: '高级设置',
     providerSelectHint: '选择供应商自动填入端点与推荐模型',
     enabled: '启用 AI 分析',

frontend/src/pages/aiops/index.tsx

@@ -106,7 +106,14 @@ export default function AiopsPage() {
     aiApi
       .getConfig()
       .then((res: AIConfigResponse) => {
-        setConfig(res.config)
+        const cfg = res.config
+        // 首次配置默认 DeepSeek + 最新 flash:用户只需填 API Key
+        if (cfg && !cfg.baseUrl && !cfg.model) {
+          const deepseek = LLM_PROVIDERS.find(p => p.id === 'deepseek')!
+          cfg.baseUrl = deepseek.endpoint
+          cfg.model = 'deepseek-flash'
+        }
+        setConfig(cfg)
         setEnabled(Boolean(res.config?.enabled))
         setRedactText((res.config?.redactExtra ?? []).join('\n'))
         setUsedToday(res.tokenUsedToday ?? 0)
@@ -540,17 +547,25 @@ export default function AiopsPage() {
                   </div>
                   <div className="space-y-1">
                     <Label className="text-xs">{t('config.model')}</Label>
-                    <Input
-                      value={config.model}
-                      placeholder="deepseek-flash"
-                      list="llm-model-options"
-                      onChange={e => setConfig({ ...config, model: e.target.value })}
-                    />
-                    <datalist id="llm-model-options">
-                      {(LLM_PROVIDERS.find(p => p.id === matchProvider(config.baseUrl))?.models ?? []).map(m => (
-                        <option key={m} value={m} />
-                      ))}
-                    </datalist>
+                    {((LLM_PROVIDERS.find(p => p.id === matchProvider(config.baseUrl))?.models ?? ['deepseek-flash'])).includes(config.model) || !config.model ? (
+                    <Select
+                      value={config.model || ((LLM_PROVIDERS.find(p => p.id === matchProvider(config.baseUrl))?.models ?? ['deepseek-flash']))[0]}
+                      onValueChange={value => {
+                        if (value === '__custom__') { setConfig({ ...config, model: '' }); return }
+                        setConfig({ ...config, model: value })
+                      }}
+                    >
+                      <SelectTrigger><SelectValue /></SelectTrigger>
+                      <SelectContent>
+                        {((LLM_PROVIDERS.find(p => p.id === matchProvider(config.baseUrl))?.models ?? ['deepseek-flash'])).map(m => (
+                          <SelectItem key={m} value={m}>{m}</SelectItem>
+                        ))}
+                        <SelectItem value="__custom__">{t('config.customModel')}</SelectItem>
+                      </SelectContent>
+                    </Select>
+                    ) : (
+                    <Input value={config.model} placeholder="model-name" onChange={e => setConfig({ ...config, model: e.target.value })} />
+                    )}
                     <p className="text-[11px] text-muted-foreground">{t('config.modelHint')}</p>
                   </div>
                   {matchProvider(config.baseUrl) === 'custom' && (