feat: 将默认 LLM 配置从 OpenAI 切换为 DeepSeek (deepseek-v4-pro)

handlers/auth.go

@@ -150,9 +150,9 @@ func (h *AuthHandler) HandleLogout(c *gin.Context) {
 
 // defaultUserSettings mirrors models.DefaultSettings for seeding new users.
 var defaultUserSettings = map[string]string{
-	"llm.endpoint":      "https://api.openai.com/v1",
+	"llm.endpoint":      "https://api.deepseek.com",
 	"llm.api_key":       "",
-	"llm.model":         "gpt-4o",
+	"llm.model":         "deepseek-v4-pro",
 	"review.top_n":      "20",
 	"review.concurrency": "5",
 	"cache.max_age_days": "7",

models/settings.go

@@ -1,9 +1,9 @@
 package models
 
 var DefaultSettings = map[string]string{
-	"llm.endpoint":      "https://api.openai.com/v1",
+	"llm.endpoint":      "https://api.deepseek.com",
 	"llm.api_key":       "",
-	"llm.model":         "gpt-4o",
+	"llm.model":         "deepseek-v4-pro",
 	"review.top_n":      "20",
 	"review.concurrency": "5",
 	"cache.max_age_days": "7",

services/llm.go

@@ -46,7 +46,7 @@ func GetLLMConfig(db *sql.DB, userID int64) (LLMConfig, error) {
 	}
 
 	if config.Model == "" {
-		config.Model = "gpt-4o"
+		config.Model = "deepseek-v4-pro"
 	}
 
 	return config, nil