fix(openflare): Agent 上报 IP 后由 Server 自动解析节点地理位置

- 启动时按 of_options.GeoIPProvider 初始化 pkg/geoip（bootstrap + runtime）
- mmdb 模式从内置 GeoLite2 种子到 data/；保存归属方式后热刷新 Provider
- Agent/Relay 心跳在服务端根据 IP 写入 geo 字段，尊重 geo_manual_override
- ipinfo 归属名称改为 City, Region, Country 可读格式

internal/apps/openflare/geoip/runtime_test.go

@@ -0,0 +1,42 @@
+package geoip
+
+import (
+	"context"
+	"testing"
+
+	"github.com/Rain-kl/Wavelet/internal/db"
+	"github.com/Rain-kl/Wavelet/internal/model"
+	pkggeoip "github.com/Rain-kl/Wavelet/pkg/geoip"
+	"github.com/glebarez/sqlite"
+	"gorm.io/gorm"
+)
+
+func TestEnsureRuntimeProviderInitializesConfiguredProvider(t *testing.T) {
+	sqliteDB, err := gorm.Open(sqlite.Open(":memory:"), &gorm.Config{DisableForeignKeyConstraintWhenMigrating: true})
+	if err != nil {
+		t.Fatalf("open sqlite: %v", err)
+	}
+	if err := sqliteDB.AutoMigrate(&model.OpenFlareOption{}); err != nil {
+		t.Fatalf("migrate: %v", err)
+	}
+	db.SetDB(sqliteDB)
+	t.Cleanup(func() {
+		db.SetDB(nil)
+		model.ResetOptionMapForTest()
+		ResetRuntimeForTest()
+	})
+
+	ctx := context.Background()
+	model.ResetOptionMapForTest()
+	ResetRuntimeForTest()
+	if err := model.UpdateOpenFlareOption(ctx, "GeoIPProvider", pkggeoip.ProviderIPInfo); err != nil {
+		t.Fatalf("update option: %v", err)
+	}
+
+	if err := EnsureRuntimeProvider(ctx); err != nil {
+		t.Fatalf("EnsureRuntimeProvider error = %v", err)
+	}
+	if pkggeoip.CurrentProvider == nil || pkggeoip.CurrentProvider.Name() == "EmptyProvider" {
+		t.Fatalf("expected ipinfo provider, got %#v", pkggeoip.CurrentProvider)
+	}
+}