fix: token 改为配置文件读取，不再自动生成；UI 全部汉化

internal/config/config.go

@@ -11,6 +11,11 @@ type DoubaoConfig struct {
 	ResourceID string `yaml:"resource_id"`
 }
 
+// SecurityConfig holds authentication settings.
+type SecurityConfig struct {
+	Token string `yaml:"token"`
+}
+
 // ServerConfig holds server settings.
 type ServerConfig struct {
 	Port    int  `yaml:"port"`
@@ -19,8 +24,9 @@ type ServerConfig struct {
 
 // Config is the top-level configuration.
 type Config struct {
-	Doubao DoubaoConfig `yaml:"doubao"`
-	Server ServerConfig `yaml:"server"`
+	Doubao   DoubaoConfig   `yaml:"doubao"`
+	Server   ServerConfig   `yaml:"server"`
+	Security SecurityConfig `yaml:"security"`
 }
 
 // defaults returns a Config with default values.