feat: 产品/客户/订单批量删除；接入 GeoLite2 城市库（地理分布/激活记录/审计日志显示归属地）；仪表盘趋势图美化

backend/go.mod

@@ -8,7 +8,8 @@ require (
 	github.com/gin-gonic/gin v1.11.0
 	github.com/golang-jwt/jwt/v5 v5.2.0
 	github.com/joho/godotenv v1.5.1
-	golang.org/x/crypto v0.43.0
+	github.com/oschwald/geoip2-golang/v2 v2.3.0
+	golang.org/x/crypto v0.54.0
 	golang.org/x/time v0.15.0
 	gorm.io/driver/sqlite v1.5.4
 	gorm.io/gorm v1.25.5
@@ -35,17 +36,18 @@ require (
 	github.com/mattn/go-sqlite3 v1.14.17 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/oschwald/maxminddb-golang/v2 v2.5.0 // indirect
 	github.com/pelletier/go-toml/v2 v2.2.4 // indirect
 	github.com/quic-go/qpack v0.5.1 // indirect
 	github.com/quic-go/quic-go v0.55.0 // indirect
 	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
 	github.com/ugorji/go/codec v1.3.0 // indirect
 	golang.org/x/arch v0.22.0 // indirect
-	golang.org/x/mod v0.29.0 // indirect
-	golang.org/x/net v0.46.0 // indirect
-	golang.org/x/sync v0.17.0 // indirect
-	golang.org/x/sys v0.37.0 // indirect
-	golang.org/x/text v0.30.0 // indirect
-	golang.org/x/tools v0.38.0 // indirect
+	golang.org/x/mod v0.38.0 // indirect
+	golang.org/x/net v0.57.0 // indirect
+	golang.org/x/sync v0.22.0 // indirect
+	golang.org/x/sys v0.47.0 // indirect
+	golang.org/x/text v0.40.0 // indirect
+	golang.org/x/tools v0.48.0 // indirect
 	google.golang.org/protobuf v1.36.10 // indirect
 )