chore: 初始提交 Fonu 1.0.2

- 公网反代：Nginx 状态卡片（版本 / 运行状态 / 配置校验 / 端口监听）
- 部署设置第一、二梯队（HTTPS 开关、安全头、限流、连接数、仅中国大陆 IP）
- 隧道检测兼容 frps v0.68 / v0.71（V2 与旧版端点）
- 恢复被清空的 internal/frp/store.go、internal/api/ddns_handler.go、web/src/views/DdnsView.vue

internal/traffic/collector_test.go

@@ -0,0 +1,53 @@
+package traffic
+
+import (
+	"testing"
+	"time"
+
+	"github.com/fonu/fonu/internal/proxy"
+)
+
+func TestCollectorAttributesConnectionsByHostAndPort(t *testing.T) {
+	c := NewCollector(nil, "", nil)
+	now := time.Now()
+	line6893 := "2026-09-17T08:30:00+08:00 xxx.com 6893 GET /login 200 0.010 218.88.23.20 192.168.8.3:6893 100 200"
+	line8443 := "2026-09-17T08:30:01+08:00 xxx.com 8443 GET / 200 0.010 218.88.23.20 192.168.8.3:8443 100 200"
+
+	c.ingestLine(line6893, true)
+	c.ingestLine(line8443, true)
+
+	rules := []proxy.Rule{
+		{
+			ID:         1,
+			ListenPort: 6893,
+			Hosts:      []proxy.Host{{Hostname: "xxx.com"}},
+		},
+		{
+			ID:         2,
+			ListenPort: 8443,
+			Hosts:      []proxy.Host{{Hostname: "xxx.com"}},
+		},
+	}
+
+	stats := c.SnapshotForRules(rules)
+	if len(stats) != 2 {
+		t.Fatalf("expected 2 stats, got %d", len(stats))
+	}
+	byID := map[int64]RuleTraffic{}
+	for _, s := range stats {
+		byID[s.RuleID] = s
+	}
+	if byID[1].Connections != 1 {
+		t.Fatalf("rule 6893 connections=%d want 1", byID[1].Connections)
+	}
+	if byID[2].Connections != 1 {
+		t.Fatalf("rule 8443 connections=%d want 1", byID[2].Connections)
+	}
+	_ = now
+}
+
+func TestEndpointKeyIncludesPort(t *testing.T) {
+	if got := EndpointKey("XXX.com", 6893); got != "xxx.com:6893" {
+		t.Fatalf("got %q", got)
+	}
+}