将 auth 数据库从 SQLite 迁移到 PostgreSQL

web/backend/internal/config/config.go

@@ -8,7 +8,6 @@ import (
 type Config struct {
 	ListenAddr    string
 	DatabaseURL   string
-	AuthDBPath    string
 	TushareAPIURL string
 }
 
@@ -16,7 +15,6 @@ func Load() (*Config, error) {
 	cfg := &Config{
 		ListenAddr:    getenv("LISTEN_ADDR", ":8080"),
 		DatabaseURL:   os.Getenv("DATABASE_URL"),
-		AuthDBPath:    getenv("AUTH_DB_PATH", "/app/auth/auth.db"),
 		TushareAPIURL: getenv("TUSHARE_API_URL", "http://tushare:8000"),
 	}
 	if cfg.DatabaseURL == "" {